제출 #1082165

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1082165		wood	카니발 티켓 (IOI20_tickets)	C++17	0 / 100	1 ms	348 KiB

tickets

#include "tickets.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define ll long long
#define pb push_back

long long find_maximum(int k, std::vector<std::vector<int>> x) {
    int n = x.size(), m = x[0].size();
    vector<vi> ans;
    for(int i = 0; i<n; i++) ans.pb({0});
    int l = 0, r = 2e9;
    while (r-l>1){
		int mid = (r+l)/2;
		ll dif = 0;
		for(int i = 0; i<n; i++) dif+=mid-x[i][0];
		if(dif<0) l = mid;
		else r=mid;
    }
    ll ldif = 0, rdif = 0;
    for(int i = 0; i<n; i++) ldif+=abs(l-x[i][0]);
    for(int i = 0; i<n; i++) rdif+=abs(r-x[i][0]);
	allocate_tickets(ans);
    return min(ldif,rdif);
}

컴파일 시 표준 에러 (stderr) 메시지

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:10:23: warning: unused variable 'm' [-Wunused-variable]
   10 |     int n = x.size(), m = x[0].size();
      |                       ^

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