제출 #1050242

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1050242		fuad27	카니발 티켓 (IOI20_tickets)	C++17	11 / 100	2 ms	860 KiB

tickets

#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
long long find_maximum(int k, std::vector<std::vector<int>> x) {
#define int long long
	int n = x.size();
	int m = x[0].size();
	vector<pair<int,int>> s(n);
	vector<int> all;
	for(int i = 0;i<n;i++) {
		s[i] = pair{0, m-1};
		for(int j:x[i])all.push_back(j);
	}
	sort(all.begin(), all.end());
	int med = all[((int)all.size()-1)/2];
	vector<int> cnt(n);
	long long sum=0;
	int ccc=0;
	for(int i = 0;i<n;i++) {
		for(int j:x[i]) {
			if(j < med) {
				ccc++;
				cnt[i]++;
			}
		}
	}
	for(int i = 0;i<n;i++) {
		for(int j:x[i]) {
			if(j < med or (j==med and ccc <= (all.size()-1)/2)) {
				if(j == med)ccc++;
				sum-=j;
			}
			else sum+=j;
		}
	}
	vector<vector<int32_t>> res(n, vector<int32_t>(m, -1));
	for(int _ = 0;_<m;_++) {
		vector<int> idxs(n);
		iota(idxs.begin(), idxs.end(), 0);
		sort(idxs.begin(), idxs.end(), [&](int a, int b) -> bool {
			return cnt[a] < cnt[b];
		});
		vector<int> ans;
		for(int i = 0;i<n/2;i++) {
			res[idxs[i]][s[idxs[i]].second--]=_;
		}
		for(int i = n/2;i<n;i++) {
//			assert(cnt[idxs[i]]);
			cnt[idxs[i]]--;
			res[idxs[i]][s[idxs[i]].first++]=_;
		}
	}
	allocate_tickets(res);
#undef int
	return sum;
}

컴파일 시 표준 에러 (stderr) 메시지

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:29:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |    if(j < med or (j==med and ccc <= (all.size()-1)/2)) {
      |                              ~~~~^~~~~~~~~~~~~~~~~~~

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