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.
The first 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.
Print n integers. The i-th of them should be equal to the number of intervals where i is a dominant color.
4
1 2 1 2
7 3 0 0
3
1 1 1
6 0 0
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.
模拟每个区间,通过if(cnt[a[j]]>cnt[a[best]]||(cnt[a[j]] == cnt[a[best]]&&a[j]<a[best])) best = j来转移
1 #include <iostream> 2 #include <cstdio> 3 #include <algorithm> 4 #include <cstring> 5 using namespace std; 6 const int maxn = 5005; 7 int a[maxn],cnt[maxn],ans[maxn]; 8 void solve(){ 9 int n; 10 scanf("%d",&n); 11 for(int i = 1; i<=n; i++) scanf("%d",&a[i]); 12 for(int i = 1; i<=n; i++){ 13 // ans[a[i]]++; 14 int best = i; 15 memset(cnt,0,sizeof(cnt)); 16 // for(int j = i; j<=n; j++) cnt[a[j]] = 0; 17 for(int j = i; j<=n; j++) 18 { 19 cnt[a[j]]++; 20 if(cnt[a[j]]>cnt[a[best]]||(cnt[a[j]] == cnt[a[best]]&&a[j]<a[best])) best = j; 21 ans[a[best]]++; 22 } 23 } 24 for(int i = 1; i<n; i++) 25 { 26 printf("%d ",ans[i]); 27 } 28 printf("%d",ans[n]); 29 30 } 31 int main() 32 { 33 solve(); 34 return 0; 35 }