Submission #294918

#	Time	Username	Problem	Language	Result	Execution time	Memory
294918		theStaticMind	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	256 KiB

shoes

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

long long calculate(vector<int>& A, vector<int>& B){

	long long ret = 0;
	for(int i = 0; i < A.size(); i++){
		ret += abs(A[i] - B[i]) - (A[i] < B[i]);
	}
	return ret;
}

long long count_swaps(std::vector<int> s) {
	int n = s.size();
	vector<int> A[n + 1], B[n + 1];

	for(int i = 0; i < n; i++){
		if(s[i] < 0) A[-s[i]].push_back(i);
		else B[s[i]].push_back(i);
	}

	long long cnt = 0;
	for(int i = 0; i <= n; i++){
		cnt += calculate(A[i], B[i]);
	}
	return cnt;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int calculate(std::vector<int>&, std::vector<int>&)':
shoes.cpp:8:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int i = 0; i < A.size(); i++){
      |                 ~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15