Submission #714246

#	Time	Username	Problem	Language	Result	Execution time	Memory
714246		vjudge1	Art Collections (BOI22_art)	C++17	Compilation error	0 ms	0 KiB

art

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define size(v) v.size()
#define all(v) v.begin(), v.end()
#define INF 2e9
#define f first
#define s second

using namespace std;

int N;
vector<int>a, in1, in2;

int publish(vector<int>&R){
    for(int i = 0; i < N; i++){
        in2[R[i]] = i;
    }
    int cnt = 0;
    for(int i = 0; i < N; ++i){
        for(int j = 0; j < N; ++j){
            if(a[i] != R[j]){
                if((in1[R[j]] > in1[a[i]]) && (in2[R[j]] < in2[a[i]])){
                    cnt++;
                }
            }
        }
    }
    return cnt;
}

void answer(vector<int>&R){
    for(int i : R){
        cout << i << " ";
    }
    cout << "\n";
}

void solve(int N){
    vector<int>R(N);
    R = a;
    sort(all(R));
    do{
        if(!publish(R)){
            answer(R);
            return;
        }
    }
    while(next_permutation(all(R)));
}

void grader(){
    cin >> N;
    a.resize(N), in1.resize(N), in2.resize(N);
    for(int i = 0; i < N; ++i){
        cin >> a[i];
        in1[a[i]] = i;
    }
    solve(N);
}


int main()
{
    grader();
}

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
/usr/bin/ld: /tmp/ccDy4hvJ.o: in function `main':
interface.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccm9cScG.o:art.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status