Submission #709725

#	Time	Username	Problem	Language	Result	Execution time	Memory
709725		gun_gan	Permutation (APIO22_perm)	C++17	Compilation error	0 ms	0 KiB

perm

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

vector<int> construct_permutation(ll k) {
	int b = 63 - __builtin_clzll(k);

	vector<vector<int>> ans;
	
	int last = 0;
	for(int i = 59; i >= 0; i -= 5) {
		ll cur = 0;
		for(int j = i, z = 4; j > i - 5; j--, z--) {
			cur += (k >> j & 1) << z;
		}

		if(cur > 0) {
			ans.push_back({});
			for(int j = 0; j < i - 4; j++) {
				ans.back().push_back(last);
				last++;
			}

			for(int j = 0; j < cur; j++) {
				ans.back().push_back(last + cur - j - 1);
			}

			last += cur;
		}
		
	}

	vector<int> ret;

	for(auto x : ans) {
		for(auto i : x) ret.push_back(i);
	}
	
	return ret;
}

int main() {
	cin.tie(0); ios_base::sync_with_stdio(0);

}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(ll)':
perm.cpp:6:6: warning: unused variable 'b' [-Wunused-variable]
    6 |  int b = 63 - __builtin_clzll(k);
      |      ^
/usr/bin/ld: /tmp/cc9L1YEI.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccqld6bJ.o:perm.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status