1006 Sign In and Sign Out （25 分）

#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;
const int inf = 0x3fffffff;
const int maxn = 110;

int main(){
    int n, x1, x2, x3, y1, y2, y3;
    int x, y, tin = 235959, tout = 0;
    scanf("%d", &n);
    string str, in, out;
    for(int i = 0; i < n; i++){
        cin >> str;
        scanf("%d:%d:%d %d:%d:%d", &x1, &x2, &x3, &y1, &y2, &y3);
        x = x1*10000 + x2*100 + x3;
        y = y1*10000 + y2*100 + y3;
        if(tin > x){tin = x; in = str;}
        if(tout < y){tout = y; out = str;}
    }
    cout << in << " " << out << endl;
}