Submission #751426

#	Time	Username	Problem	Language	Result	Execution time	Memory
751426		vjudge1	Poi (IOI09_poi)	C++17	100 / 100	245 ms	23756 KiB

poi

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
#define fi first
#define se second

bool cmp(pair <pair <ll, ll>, ll> a, pair <pair <ll, ll>, ll> b){
	if(a.fi.fi == b.fi.fi){
		if(a.fi.se == b.fi.se) return a.se < b.se;
		else return a.fi.se > b.fi.se;
	}
	else return a.fi.fi > b.fi.fi;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n, m, p;
	cin >> n >> m >> p;
	p--; // 0-th based

	// pair {score, task solve, id}
	int arr[n][m];
	for(int a = 0; a < n; ++a){
		for(int b = 0; b < m; ++b){
			cin >> arr[a][b];
		}
	}

	// calculate task score
	ll score[m];
	memset(score, 0, sizeof score);
	for(int a = 0; a < n; ++a){
		for(int b = 0; b < m; ++b){
			if(!arr[a][b]) score[b]++;
		}
	}

	pair <pair <ll, ll>, ll> contestants[n];
	for(int a = 0; a < n; ++a){
		contestants[a].se = a;
		contestants[a].fi.fi = 0;
		contestants[a].fi.se = 0;
		for(int b = 0; b < m; ++b){
			if(arr[a][b]){
				contestants[a].fi.fi += score[b];
				contestants[a].fi.se++;
			}
		}
	}

	sort(contestants, contestants + n, cmp);

	for(int a = 0; a < n; ++a){
		if(contestants[a].se == p){
			cout << contestants[a].fi.fi << " " << a + 1 << '\n';
			break;
		}
	}

	return 0;
}

• Subtask 1: 100 / 100