Submission #911398

#	Time	Username	Problem	Language	Result	Execution time	Memory
911398		asdasdqwer	Permutation (APIO22_perm)	C++17	Compilation error	0 ms	0 KiB

perm

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

#define int int64_t

vector<int32_t> construct_permutation(int64_t x) {
    if (x==2) {
        return {1};
    }

    x--;

    vector<int32_t> out;
    __uint128_t ONE=1;

    int cnt=0;
    vector<int> v;
    for (int i=65;i>0;i--) {
        while (x >= (((ONE<<i)-1))) {
            v.push_back(i);
            x -= ((ONE<<i)-1);
        }
    }

    for (int i=1;i<=v.size();i++) {
        int start=(1e9-1e5)/i;

        for (int j=0;j<v[i-1];j++) {
            out.push_back(start+j);
        }
    }

    vector<int32_t> al=out;
    sort(al.begin(),al.end());
    map<int,int> mp;
    for (int i=0;i<al.size();i++) {
        mp[al[i]]=i;
    }

    for (int32_t &x:out) {
        x = mp[x];
    }

    return out;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(int64_t)':
perm.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and '__int128 unsigned' [-Wsign-compare]
   19 |         while (x >= (((ONE<<i)-1))) {
      |                ~~^~~~~~~~~~~~~~~~~
perm.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for (int i=1;i<=v.size();i++) {
      |                  ~^~~~~~~~~~
perm.cpp:36:19: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for (int i=0;i<al.size();i++) {
      |                  ~^~~~~~~~~~
perm.cpp:16:9: warning: unused variable 'cnt' [-Wunused-variable]
   16 |     int cnt=0;
      |         ^~~
/usr/bin/ld: /tmp/ccWLpiAT.o: in function `main':
grader.cpp:(.text.startup+0x240): undefined reference to `construct_permutation(long long)'
collect2: error: ld returned 1 exit status