九度1013 开门人和关门人

/*********************************
 *    日期:2012-6-29
 *    作者:SJF0115
 *    题号: 九度1013
 *    题目:开门人和关门人
 *    结果:AC
 *    题意:
 *    总结:
**********************************/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
	int N,M;
	//输入重定向,输入数据将从in.txt文件中读取
	//freopen("C:\\Users\\SJF\\Desktop\\in.txt","r",stdin); 
    while(scanf("%d",&N)!=EOF)
    {   
		int i,j;
		int in = 0,out = 0;
		int hour,minute,second,inTime[100],outTime[100];
		char ID[100][100];
		for(i = 0;i<N;i++){
			scanf("%d",&M);
			for(j = 0;j<M;j++){
				scanf("%s %d:%d:%d",&ID[j],&hour,&minute,&second);
				inTime[j] = hour*3600 + minute*60 + second;
				if(inTime[j] < inTime[in]){
					in = j;
				}
				scanf("%d:%d:%d",&hour,&minute,&second);
				outTime[j] = hour*3600 + minute*60 + second;
				if(outTime[j] > outTime[out]){
					out = j;
				}
			}
			printf("%s %s\n",ID[in],ID[out]);
		}
    }
    return 0;
}

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