Submission #835288

#	Time	Username	Problem	Language	Result	Execution time	Memory
835288		VMaksimoski008	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>

#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define uniq(x) x.erase(unique(all(x)), x.end())
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;

void setIO() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}

int64_t count_swaps(vector<int> S) {
    
    int n = sz(S) / 2;
    set<int> diff;

    for(int &x : S) diff.insert(abs(x));

    if(n == 1) {
        if(S[0] > 0) return 1;
        return 0;
    }

    if(diff.size() == 1) {
        ll ans = 0;

        int curr = 0;
        for(int i=0; i<sz(S); i++) {
            if(S[i] < 0) {
                ans += 1ll * abs(i - curr);
                curr += 2;
            }
        }

        return ans;
    }

    return 0;
}

int32_t main() {
    setIO();

    int n;
    cin >> n;
    vector<int> v(2*n);
    for(int &x : v) cin >> x;

    cout << count_swaps(v) << '\n';
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccnaHBz7.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccdjteZ5.o:shoes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status