• codeforces 673C C. Bear and Colors(暴力)


    题目链接:

    C. Bear and Colors

    time limit per test
    2 seconds
     
    memory limit per test
    256 megabytes
    input
    standard input
    output
    standard output

    Bear Limak has n colored balls, arranged in one long row. Balls are numbered 1 through n, from left to right. There are n possible colors, also numbered 1 through n. The i-th ball has color ti.

    For a fixed interval (set of consecutive elements) of balls we can define a dominant color. It's a color occurring the biggest number of times in the interval. In case of a tie between some colors, the one with the smallest number (index) is chosen as dominant.

    There are  non-empty intervals in total. For each color, your task is to count the number of intervals in which this color is dominant.

    Input
     

    The first line of the input contains a single integer n (1 ≤ n ≤ 5000) — the number of balls.

    line of the input contains a single integer n (1 ≤ n ≤ 5000) — the number of balls.

    The second line contains n integers t1, t2, ..., tn (1 ≤ ti ≤ n) where ti is the color of the i-th ball.

    Output
     

    Print n integers. The i-th of them should be equal to the number of intervals where i is a dominant color.

    Examples
     
    input
    4
    1 2 1 2
    output
    7 3 0 0 
    input
    3
    1 1 1
    output
    6 0 0 
    Note

    In the first sample, color 2 is dominant in three intervals:

    • An interval [2, 2] contains one ball. This ball's color is 2 so it's clearly a dominant color.
    • An interval [4, 4] contains one ball, with color 2 again.
    • An interval [2, 4] contains two balls of color 2 and one ball of color 1.

    There are 7 more intervals and color 1 is dominant in all of them.

    题意:

    给出这么多颜色,在一个序列中,dominant是出现次数最多的数,如果出现次数最多的不止一个,那么就是数值最小的那个;

    思路

    暴力跑出[i,j]中每个数出现的次数,同时更新这里面的的dominant;

    AC代码

    #include <bits/stdc++.h>
    using namespace std;
    #define Riep(n) for(int i=1;i<=n;i++)
    #define Riop(n) for(int i=0;i<n;i++)
    #define Rjep(n) for(int j=1;j<=n;j++)
    #define Rjop(n) for(int j=0;j<n;j++)
    #define mst(ss,b) memset(ss,b,sizeof(ss));
    typedef long long LL;
    const LL mod=1e9+7;
    const double PI=acos(-1.0);
    const int inf=0x3f3f3f3f;
    const int N=1e5+5;
    int n,flag[5002][5002],a[5002],ans[5002];
    int main()
    {
       scanf("%d",&n);
       for(int i=1;i<=n;i++)
       {
           scanf("%d",&a[i]);
       }
       for(int i=1;i<=n;i++)
       {
           int num=0,temp;
           for(int j=i;j<=n;j++)
           {
               flag[i][a[j]]++;
               if(flag[i][a[j]]>num)
               {
                   num=flag[i][a[j]];
                   temp=a[j];
               }
               else if(flag[i][a[j]]==num)
               {
                   if(a[j]<temp)
                   {
                       temp=a[j];
                   }
               }
               ans[temp]++;
           }
    
       }
       for(int i=1;i<=n;i++)
       {
           printf("%d ",ans[i]);
       }
    
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/zhangchengc919/p/5470106.html
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