문제접근
•
입력받은 시간을 모두 분으로 바꾸면 편함
놓쳤던 부분
•
while(cin >> ) 구문
코드
12812 KB
60 ms
#include <iostream>
#include <unordered_map>
#include <string>
using namespace std;
int main(void) {
string s,e,q;
int start, end, quit;
string time, name;
int tmp;
unordered_map<string, int> attendance;
int answer = 0;
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cin >> s >> e >> q;
start = 60 * stoi(s.substr(0, 2)) + stoi(s.substr(3, 2));
end = 60 * stoi(e.substr(0, 2)) + stoi(e.substr(3, 2));
quit = 60 * stoi(q.substr(0, 2)) + stoi(q.substr(3, 2));
while (cin >> time >> name) {
tmp = 60 * stoi(time.substr(0, 2)) + stoi(time.substr(3, 2));
if (tmp <= start)
attendance[name] = 1;
else if (tmp >= end && tmp <= quit) {
if (attendance[name] == 1) {
attendance[name]--;
answer++;
}
}
}
cout << answer;
return (0);
}
C++
복사
