Submission #1272955

#	Time	Username	Problem	Language	Result	Execution time	Memory
1272955		arkanefury	Arranging Shoes (IOI19_shoes)	C++20	Compilation error	0 ms	0 KiB

shoes

#include "shoes.h"
using namespace std;
const int N = 2e5+5;
int a[N], b[N];
long long count_swaps(vector <int> v){
    int n = v.size(), k;
    long long ans = 0;
	for(int i = 0; i < n; i += 2){
		if(v[i] < 0){
		for(int j = i+1; j < n; i ++){
			if(v[j] > 0 && v[j] == abs(v[i])){
			k = j;break;
			}
		}
			for(int j = k; j > i+1; j --){
				swap(a[j], a[j-1]);
				ans ++;
			}
		}
		else{
			for(int j = i+1; j < n; i ++){
			if(v[j] < 0 && abs(v[j]) == v[i]){
			k = j;break;
			}
		}
			for(int j = k; j > i; j --){
				swap(a[j], a[j-1]);
				ans ++;
			}
		}
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:11:48: error: 'abs' was not declared in this scope; did you mean 'ans'?
   11 |                         if(v[j] > 0 && v[j] == abs(v[i])){
      |                                                ^~~
      |                                                ans
shoes.cpp:22:40: error: 'abs' was not declared in this scope; did you mean 'ans'?
   22 |                         if(v[j] < 0 && abs(v[j]) == v[i]){
      |                                        ^~~
      |                                        ans