Submission #1047332

#	Time	Username	Problem	Language	Result	Execution time	Memory
1047332		vjudge1	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include<bits/stdc++.h>
using namespace std;
const int mxN = 1e5 + 7;
int tree[mxN];
int n;
void upd(int l,int r)
{
	l++;
	for( ;n > l;l += l & -l) tree[l]++;
	for( ;n > r;r += r & -r) tree[r]--;
}
int que(int pos)
{
	pos--;
	int res = 0;
	for( ;pos > 0;pos -= pos & -pos) res += tree[pos];
	return res;
}
int64_t count_swaps(int a[])
{
	return a[0] < a[1];
}
int main()
{

}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccGJXLsy.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccHak1Ox.o:shoes.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccGJXLsy.o: in function `main':
grader.cpp:(.text.startup+0x2a8): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status