제출 #524305

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
524305		itachi	Poi (IOI09_poi)	C++14	컴파일 에러	0 ms	0 KiB

poi

#include<iostream>
#include<vector>
#include<map>
#include<algorithm>
#include<iomanip>

using namespace std;
struct player {
	int id;
	int tasks;
	int points;
	string doneTasks = "";
	player(int id, int tasks, int points) {
		this->id = id;
		this->tasks = tasks;
		this->points = points;
	}

	friend operator < (player a, player b) {
		if(a.points == b.points) {
			if(a.tasks == b.tasks) {
				return a.id < b.id;
			}
			return a.tasks > b.tasks;
		}
		return a.points > b.points;
	}
};


int main() {
	ios::sync_with_stdio(false);
	cin.tie(NULL);

	int n;
	cin >> n;
	vector<player> players(n,player(0,0,0));
	int t,k;
	cin >> t >> k;
	vector<int> tasks(t,0);
	for(int i = 0; i < n; i++) {
		for (int j = 0; j < t; j++)
		{
			int l;
			cin >> l;
			tasks[j] += l;
			players[i].doneTasks += (l?'1':'0');
			players[i].id = i;
			players[i].tasks += l;
		}
	}

	for(int i=0;i<n;i++){
		for(int j=0;j<t;j++){
			if(players[i].doneTasks[j] == '1'){
				players[i].points += (n-tasks[j]);
			}
		}
	}

	sort(players.begin(), players.end());

	for(int i=0;i<n;i++){
		if(players[i].id+1 == k){
			cout << players[i].points << " " << i+1 << endl;
			break;
		}
	}

}

컴파일 시 표준 에러 (stderr) 메시지

poi.cpp:19:9: error: ISO C++ forbids declaration of 'operator<' with no type [-fpermissive]
   19 |  friend operator < (player a, player b) {
      |         ^~~~~~~~