Submission #340609

#	Time	Username	Problem	Language	Result	Execution time	Memory
340609		israeladewuyi	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<ll> vi;
typedef vector<string> vs;
#define PB push_back
#define pb pop_back
#define in insert 
#define endl "\n"
const unsigned int M = 1000000007;
 
ll count_swaps(vi s){
	ll n = s.size();
	ll swaps = 0;
	for(int i = 0; i < n-1; i++){
		int y = abs(s[i]);
		for(int j = i + 1; j< n; j++){
			if(abs(s[j]) == y){
				while(abs(s[i+1]) != y){
					swap(s[j],s[j-1]);
					swaps++;
					j = j-1;
				}
			}
		}
		if(s[i] > 0)swaps++;
	}
	
	
	return swaps;
}
 
//int main(){
//	vi v;
//	v.PB(2);
//	v.PB(-2);
//	v.PB(2);
//	v.PB(-2);
//	cout<<count_swaps(v);
//}

Compilation message (stderr)

/tmp/ccak8Iod.o: In function `main':
grader.cpp:(.text.startup+0x28e): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status