【杭电4883】TIANKENG’s restaurant

#include<string.h>#include<stdio.h>#include<algorithm>using namespace std;int a[100000];int main() {    int t;    scanf("%d",&t);    while(t--) {        int n,i;        memset(a,0,sizeof(a));        scanf("%d",&n);        for(i=0; i<n; i++) {            int p,h1,m1,h2,m2,j;            scanf("%d %d:%d %d:%d",&p,&h1,&m1,&h2,&m2);            h1=h1*60+m1;            h2=h2*60+m2;            for(j=h1; j<h2; j++)                a[j]+=p;        }        printf("%d\n",*max_element(a,a+1500));    }    return 0;}

http://acm.hdu.edu.cn/showproblem.php?pid=4883