L2-042 老板的作息表(团体程序设计天梯赛-练习集)

L2-042 老板的作息表

#include <bits/stdc++.h>

using namespace std;

typedef pair<string, string> PII;

set<PII> record;
string st, ed;

int main(){
    cin >> st;
    while(cin >> st >> ed >> ed)
        record.insert({st, ed});

    record.insert({"23:59:59", ""});

    string begin = "00:00:00";
    for(auto it :record){
        if(begin < it.first)
            cout << begin << " - " << it.first << endl;
            begin = it.second;
        
    }

    return 0;
}