Submission #212642

#	Time	Username	Problem	Language	Result	Execution time	Memory
212642		Aydarov03	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

/*
  no pain, no gain
*/

//#pragma GCC optimize ("Ofast")
//#pragma GCC target ("avx,avx2,fma")
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pb push_back
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define pii pair<int, int>
#define all(s) s.begin(), s.end()
#define prev myrza4321
#define y1 myrza1234
#define OK puts("OK")
using namespace std;

const int N = (int)1e5 + 5;
const int INF = 0x3f3f3f3f;

int a[N];

/*
4
2 1 -1 -2
*/

main() {
//  int n;
//  cin >> n;
//
//  for (int i = 0; i < n; i++) {
//    scanf("%d", &a[i]);
//  }
//
//  int ans = 0;
//  for (int l = 0; l < n; l += 2) {
//    int lst = -1;
//    if (a[l] < 0) {
//      lst = l + 1;
//    } else {
//      lst = l;
//    }
//
//    for (int r = l + 1; r < n; r++) {
//      if (a[r] == -a[l]) {
//        int pos = r;
//        while (pos > lst) {
//          swap(a[pos], a[pos - 1]);
//          pos--, ans++;
//        }
//        break;
//      }
//    }
//  }
//  cout << ans;
}

Compilation message (stderr)

shoes.cpp:30:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
/tmp/ccLDPqcw.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccZ3m1af.o:shoes.cpp:(.text.startup+0x0): first defined here
/tmp/ccLDPqcw.o: In function `main':
grader.cpp:(.text.startup+0x282): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status