Submission #889521

#	Time	Username	Problem	Language	Result	Execution time	Memory
889521		svaz	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	440 KiB

shoes

#include "shoes.h"
#include<iostream>
#include<vector>
using namespace std;
long long count_swaps(std::vector<int> S){
    vector<bool>visitados(S.size(),false);
    long long sw=0;
    int buscado;
    for(int i=0;i<S.size();i++){
        if(!visitados[i]){
         buscado=S[i]*-1;
        for(int j=i+1;j<S.size();j++){
            if(!visitados[j])sw++;
            if(S[j]==buscado){
                if(buscado>0)sw--;
                visitados[i]=visitados[j]=true;
                break;
            }
        }
        }
    }
    return sw;
}
/*int main(){
    int n,zap;
    cin>>n;
    vector<int>zapatos;
    for(int i=0;i<(n*2);i++){
        cin>>zap;
        zapatos.push_back(zap);
    }
    cout<<count_swaps(zapatos)<<"\n";
    return 0;
}*/

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:9:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for(int i=0;i<S.size();i++){
      |                 ~^~~~~~~~~
shoes.cpp:12:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |         for(int j=i+1;j<S.size();j++){
      |                       ~^~~~~~~~~

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