PAT (Advanced Level) - 1006 Sign In and Sign Out

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模拟

#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;int m;
string open_id, open_time;
string close_id, close_time;int main(){cin >> m;for (int i = 0; i < m; i ++ ) {string id, in_time, out_time;cin >> id >> in_time >> out_time;if (!i || in_time < open_time) {    // 更新开门的人open_id = id;open_time = in_time;}if (!i || out_time > close_time) {    // 更新锁门的人close_id = id;close_time = out_time;}}cout << open_id << ' ' << close_id << endl;return 0;
}

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