IT博客汇
  • 首页
  • 精华
  • 技术
  • 设计
  • 资讯
  • 扯淡
  • 权利声明
  • 登录 注册

    Codeforces Round #715 (Div. 2)

    ReiAC\'s Blog发表于 2021-04-17 17:05:05
    love 0
    Featured image of post Codeforces Round #715 (Div. 2)

    A - Average Height

     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    
    #include<bits/stdc++.h>
    //#define int long long//__int128
    #define mmst0(x) memset(x,0,sizeof(x))
    #define mmst3f(x) memset(x,0x3f,sizeof(x))
    #define pb(x) emplace_back(x)
    #define mkp(x, y) make_pair(x, y)
    #define fi first
    #define se second
    using namespace std;
    typedef long long ll;
    typedef long double rld;
    typedef unsigned long long ull;
    
    const rld eps = 1e-6;
    const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF
    
    int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
    //void prt(int x){if(x<0){putchar('-');x=-x;}if(x>9)prt(x/10);putchar((char)(x%10+'0'));}
    
    int n;
    int a[10000];
    
    void work()
    {
        n=read();
        for(int i=1;i<=n;i++)a[i]=read();
        for(int i=1;i<=n;i++) if(a[i]%2)printf("%d ",a[i]);
        for(int i=1;i<=n;i++) if(a[i]%2==0)printf("%d ",a[i]);
        printf("\n");
        return;
    }
    
    signed main()
    {
        //ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); //freopen(".in", "r", stdin);//freopen(".out", "w", stdout);
        signed T=read();
        for(signed Case=1; Case<=T; Case++)
        {
            //printf("Case %d: ",Case);
            work();
        }
        return 0;
    }
    

    B - TMT Document

     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    
    #include<bits/stdc++.h>
    //#define int long long//__int128
    #define mmst0(x) memset(x,0,sizeof(x))
    #define mmst3f(x) memset(x,0x3f,sizeof(x))
    #define pb(x) emplace_back(x)
    #define mkp(x, y) make_pair(x, y)
    #define fi first
    #define se second
    using namespace std;
    typedef long long ll;
    typedef long double rld;
    typedef unsigned long long ull;
    
    const rld eps = 1e-6;
    const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF
    
    int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
    //void prt(int x){if(x<0){putchar('-');x=-x;}if(x>9)prt(x/10);putchar((char)(x%10+'0'));}
    
    int n;
    string s;
    
    void work()
    {
        cin>>n>>s;int mx=0;
        stack<char> st;
        for(int i=0;i<(int)s.size();i++)
        {
            if(s[i]=='T')
            {
                st.push('T');
            }
            if(s[i]=='M' )
            {
                mx++;
                if(!st.empty())
                {
                    st.pop();
                }
                else
                {
                    cout<<"NO"<<endl;
                    return;
                }
            }
        }
        while(mx--)st.pop();
        if(!st.empty())
        {
            cout<<"NO"<<endl;
            return;
        }
        for(int i=(int)s.size()-1;i>=0;i--)
        {
            if(s[i]=='T')
            {
                st.push('T');
            }
            if(s[i]=='M' )
            {
                mx++;
                if(!st.empty())
                {
                    st.pop();
                }
                else
                {
                    cout<<"NO"<<endl;
                    return;
                }
            }
        }
        cout<<"YES"<<endl;
        return;
    }
    
    signed main()
    {
        //ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); //freopen(".in", "r", stdin);//freopen(".out", "w", stdout);
        signed T;cin>>T;
        for(signed Case=1; Case<=T; Case++)
        {
            //printf("Case %d: ",Case);
            work();
        }
        return 0;
    }
    

    C - The Sports Festival

     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    
    #include<bits/stdc++.h>
    #define int long long//__int128
    #define mmst0(x) memset(x,0,sizeof(x))
    #define mmst3f(x) memset(x,0x3f,sizeof(x))
    #define pb(x) emplace_back(x)
    #define mkp(x, y) make_pair(x, y)
    #define fi first
    #define se second
    using namespace std;
    typedef long long ll;
    typedef long double rld;
    typedef unsigned long long ull;
    
    const rld eps = 1e-6;
    const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF
    
    int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
    //void prt(int x){if(x<0){putchar('-');x=-x;}if(x>9)prt(x/10);putchar((char)(x%10+'0'));}
    
    void work()
    {
        int n=read();
        vector<int> a(n);
        for (int i=0;i<n;i++)a[i]=read();
        sort(a.begin(), a.end());
        vector<vector<int> > dp(n, vector<int>(n));
        for (int d=1;d<n;d++)
            for (int i=0;i+d<n;i++)
                dp[i][i+d]=min(dp[i][i+d-1],dp[i+1][i+d])+a[i+d]-a[i];
        cout<<dp[0][n-1]<<endl;
        return;
    }
    
    signed main()
    {
        //ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); //freopen(".in", "r", stdin);//freopen(".out", "w", stdout);
        signed T=1;
        for(signed Case=1; Case<=T; Case++)
        {
            //printf("Case %d: ",Case);
            work();
        }
        return 0;
    }
    

    D - Binary Literature

     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    
    #include <bits/stdc++.h>
    using namespace std;
    int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
    int n;
    int a[3][501009];
    
    string buildx(int x,int y,int cxx)
    {
        string tmp1=""; int ptr=1;
        for(int i = 1; i <= 2 * n; i++)
            if(a[y][i] == cxx)
            {
                while(ptr <= 2 * n && a[x][ptr] != a[y][i]) tmp1 += a[x][ptr++] ? "1" : "0";
                tmp1 += a[y][i] ? "1" : "0";
                ptr++;
            }
            else tmp1 += a[y][i] ? "1" : "0";
        while(ptr <= 2 * n) tmp1 += a[x][ptr++] ? "1" : "0";
        return tmp1; 
    }
    string build(int x, int y)
    {
        string tmp1 =buildx(x,y,0),tmp2 =buildx(x,y,1);
        if(tmp1.size() < tmp2.size()) return tmp1;
        else return tmp2;
    }
    void work()
    {
        n = read();
        for(int j = 0; j < 3; j++)
            for(int i = 1; i <= 2 * n; i++)
                scanf("%1d", &a[j][i]);
        string t1 = build(0, 1),t2 = build(0, 2),t3 = build(1, 2);
        if(t3.size() < t2.size()) swap(t3, t2);
        if(t2.size() < t1.size()) swap(t2, t1);
        cout << t1 << endl;
    }
    signed main()
    {
        int Case = read();
        while(Case--) work();
        return 0;
    }
    

    E - Almost Sorted

     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    
    #include <bits/stdc++.h>
    #define int long long
    #define mmst0(x) memset(x,0,sizeof(x))
    #define mmst3f(x) memset(x,0x3f,sizeof(x))
    #define pb(x) emplace_back(x)
    #define mkp(x, y) make_pair(x, y)
    #define fi first
    #define se second
    using namespace std;
    typedef long long ll;
    typedef long double rld;
    typedef unsigned long long ull;
    
    const rld eps = 1e-6;
    const int INF=0x3f3f3f3f;//0x3f3f3f3f3f3f3f3f;//LLINF
    
    int read(){int s=0,w=1;char ch=getchar();while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();}while(isdigit(ch)){s=(s<<3)+(s<<1)+(ch^48);ch=getchar();} return s*w;}
    
    int n,k;
    int a[100003];
    
    void work()
    {
        n=read();k=read()-1;
        if (n <= 61 && (int)1<<(n-1) <=k)
        {
            printf("-1\n");
            return;
        }
        iota(a+1, a+n+1, 1);
        for (int i=60,j;i>=0;i=j)
        {
            j = i-1;
            if (~(k>>i)&((int)1)) continue;
            while (j >= 0 && ((k>>j)&1))j--;
            reverse(a+n-1-i, a+n-j);
        }
        for (int i=1;i<=n;i++) printf("%lld%c",a[i]," \n"[i==n]);
        return;
    }
    
    signed main()
    {
        int T=read();
        while(T--)work();
        return 0;
    }
    


沪ICP备19023445号-2号
友情链接