Submission #625766

#	Time	Username	Problem	Language	Result	Execution time	Memory
625766		1ne	Carnival Tickets (IOI20_tickets)	C++14	11 / 100	2 ms	564 KiB

tickets

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

long long find_maximum(int k, std::vector<std::vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	long long sum = 0;
	vector<int>pos;
	for (int i = 0;i<n;++i){
		for (int j = 0;j<m;++j){
			sum+=x[i][j];
			pos.push_back(x[i][j]);
			x[i][j] = 0;
		}
	}
	sort(pos.begin(),pos.end());
	vector<int>valid = {pos[n/2],pos[n/2 - 1],sum / n,sum / n  + 1,sum / n - 1};
	long long ans = LLONG_MAX;
	for (auto x:valid){
		long long curans = 0;
		for (auto y:pos){
			curans+=abs(y - x);
		}
		ans = min(ans,curans);
	}
	for (int i = 0;i<n;++i){
		for (int j = 0;j<m;++j){
			x[i][j] = 0;
		}
	}
	allocate_tickets(x);
	return ans;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:19:48: warning: narrowing conversion of '(sum / ((long long int)n))' from 'long long int' to 'int' [-Wnarrowing]
   19 |  vector<int>valid = {pos[n/2],pos[n/2 - 1],sum / n,sum / n  + 1,sum / n - 1};
      |                                            ~~~~^~~
tickets.cpp:19:48: warning: narrowing conversion of '(sum / ((long long int)n))' from 'long long int' to 'int' [-Wnarrowing]
tickets.cpp:19:61: warning: narrowing conversion of '((sum / ((long long int)n)) + 1)' from 'long long int' to 'int' [-Wnarrowing]
   19 |  vector<int>valid = {pos[n/2],pos[n/2 - 1],sum / n,sum / n  + 1,sum / n - 1};
      |                                                    ~~~~~~~~~^~~
tickets.cpp:19:61: warning: narrowing conversion of '((sum / ((long long int)n)) + 1)' from 'long long int' to 'int' [-Wnarrowing]
tickets.cpp:19:73: warning: narrowing conversion of '((sum / ((long long int)n)) - 1)' from 'long long int' to 'int' [-Wnarrowing]
   19 |  vector<int>valid = {pos[n/2],pos[n/2 - 1],sum / n,sum / n  + 1,sum / n - 1};
      |                                                                 ~~~~~~~~^~~
tickets.cpp:19:73: warning: narrowing conversion of '((sum / ((long long int)n)) - 1)' from 'long long int' to 'int' [-Wnarrowing]

• Subtask 1: 11 / 11
• Subtask 2: 0 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10