Submission #612460

#	Time	Username	Problem	Language	Result	Execution time	Memory
612460		PanTkd	Connecting Supertrees (IOI20_supertrees)	C++14	Compilation error	0 ms	0 KiB

supertrees

//
//  main.cpp
//
//  Created by Panagiotis Chadjicostas on
//  Copyright © Panagiotis Hadjicostas. All rights reserved.
//

#include <iostream>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <limits>
#include <list>
#include <cstring>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <unordered_map>

using namespace std;

typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> ii;
#define fo(i,a,b) for(int i = a; i<=b; i++)
#define f(i,b) for(int i=0;i<b;i++)
#define F first
#define S second
#define sz size
#define ls s,m,idx<<1
#define rs m+1,e,idx<<1|1
const ll MOD=ll(1e9)+7;
const ll MAXN=2*ll(1e6);
void checker(){
    ll n=rand()%20+2;
    vi a(n,ll());
    for(ll i=0;i<n;i++){
        a[i]=rand()%20+2;
    }
    for(ll b=0;b<(1<<n);b++){
        vi on,off;
        for(ll i=0;i<n;i++){
            if(i&(1<<i)){
                on.push_back(i);
            }
            else{
                off.push_back(i);
            }
        }
    }
}
///////////////////////////////////////////////////////////////////////

int construct(vector<vector<ll> > p)
{
    ll s=0;
    ll n=p[s].size();
    vector<vector<ll> > b;
    b.assign(n,vi(n,0));
    for(ll i=0;i<n;i++){
        for(ll j=0;j<n;j++){
            if(j==s)
                if(i!=s){
                    b[i][j]=1;
                    b[j][i]=1;
                }
        }   
    }
    build(b);
    return 1;
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    vector<vector<ll> > p(3,vi(3,1));
    cout<<construct(p);
    return 0;
}

Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<long long int> >)':
supertrees.cpp:76:5: error: 'build' was not declared in this scope
   76 |     build(b);
      |     ^~~~~