Submission #886951

#	Time	Username	Problem	Language	Result	Execution time	Memory
886951		artixkrishna	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
#define REP(i,a,b) for(int i=a; i<b; i++)

int count_swaps(vector<int> a){
        ll swaps=0;
        bool correct=false;
        while(!correct){
                d=0; e=1;
                for(ll i=1; i<(int)a.size()/2; i++){
                        if(a[d]== -a[e]){
                                correct=true; d+=1; e+=1;continue;
                        }else{
                        correct=false;
                        ll b=a[e];
                        ll c=a[d];
                        a[e]=c;
                        a[d]=b;d+=2;e+=2;
                        swaps+=1;
                        }
                }
        }
        return swaps;
}

int main(){
        cout<<count_swaps([-2, 2, 2, -2,-2,2]);
}

Compilation message (stderr)

shoes.cpp:8:5: error: ambiguating new declaration of 'int count_swaps(std::vector<int>)'
    8 | int count_swaps(vector<int> a){
      |     ^~~~~~~~~~~
In file included from shoes.cpp:1:
shoes.h:7:11: note: old declaration 'long long int count_swaps(std::vector<int>)'
    7 | long long count_swaps(std::vector<int> S);
      |           ^~~~~~~~~~~
shoes.cpp: In function 'int count_swaps(std::vector<int>)':
shoes.cpp:12:17: error: 'd' was not declared in this scope
   12 |                 d=0; e=1;
      |                 ^
shoes.cpp:12:22: error: 'e' was not declared in this scope
   12 |                 d=0; e=1;
      |                      ^
shoes.cpp: In function 'int main()':
shoes.cpp:30:28: error: expected identifier before '-' token
   30 |         cout<<count_swaps([-2, 2, 2, -2,-2,2]);
      |                            ^
shoes.cpp:30:30: error: expected ']' before ',' token
   30 |         cout<<count_swaps([-2, 2, 2, -2,-2,2]);
      |                              ^
      |                              ]
shoes.cpp: In lambda function:
shoes.cpp:30:30: error: expected '{' before ',' token
shoes.cpp: In function 'int main()':
shoes.cpp:30:45: error: expected ')' before ']' token
   30 |         cout<<count_swaps([-2, 2, 2, -2,-2,2]);
      |                          ~                  ^
      |                                             )