浙大PAT 1006题 1006. Sign In and Sign Out

谁是开门人和谁是锁门人，简单地模拟题。

#include<stdio.h>#include<string.h>int main(){char lkman[20],unlkman[20];char id[20],in[20],out[20];char fst[20]={"24:00:00"},last[20]={"00:00:00"};int i,j,n;scanf("%d",&n);for(i=0;i<n;i++){scanf("%s %s %s",id,in,out);if(strcmp(in,fst)<0){strcpy(fst,in);strcpy(unlkman,id);}if(strcmp(out,last)>0){strcpy(last,out);strcpy(lkman,id);}}printf("%s %s\n",unlkman,lkman);return 0;}