Submission #1338346

#	Time	Username	Problem	Language	Result	Execution time	Memory
1338346		uranhishig	Arranging Shoes (IOI19_shoes)	C++20	Compilation error	0 ms	0 KiB

shoes

// #include "shoes.h"
#include <bits/stdc++.h>

using namespace std;
// #define int long long


long long count_swaps(std::vector<int> s) {
	int n = s.size() / 2;
	if(n == 1){
		if(s[0] < 0){
			return 0;
		}
		else{
			return 1;
		}
	}
	int ans = 0;
	for (int i = 1; i < 2*n; i++) {
		if(i %2 == 1){
			if(s[i - 1] > 0) {
				swap(s[i], s[i - 1]);
				ans++;
			}
		}
		else{
			if(s[i - 1] < 0) {
				swap(s[i], s[i - 1]);
				ans++;
			}
		}
	}
	return ans;
}

signed main() {
	int n;
	cin >> n;
	vector<int> S(2 * n);
	for (int i = 0; i < 2 * n; i++)
		cin >> S[i];

	long long result = count_swaps(S);

	cout << result;
	return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccx7EZvo.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccsRBo2N.o:shoes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status