Submission #898645

#	Time	Username	Problem	Language	Result	Execution time	Memory
898645		ozner77	Arranging Shoes (IOI19_shoes)	C++17	0 / 100	15 ms	3160 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#include <vector>
#include <iostream>
#include <string>
using namespace std;
long long count_swaps(std::vector<int> s) {
	int c,d,e=s.size(),xd;
    long long swaps=0;
	for(int i=0;i<e;i+=2){
                for(int k=i+1;k<e;k++){
                    if(s[k]+s[i]==0){
                        swaps+=(k-(i+1));
                        s[i+1]=s[k];
                        s[k]=c;
                        break;
                    }else{
                        d=s[k];
                        s[k]=c;
                        c=d;
                    }
                }
            return swaps;
            }
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:8:21: warning: unused variable 'xd' [-Wunused-variable]
    8 |  int c,d,e=s.size(),xd;
      |                     ^~
shoes.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type]
   25 | }
      | ^
shoes.cpp:15:29: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
   15 |                         s[k]=c;

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