Submission #949962

#	Time	Username	Problem	Language	Result	Execution time	Memory
949962		irmuun	Connecting Supertrees (IOI20_supertrees)	C++17	21 / 100	172 ms	24108 KiB

supertrees

#include<bits/stdc++.h>
#include "supertrees.h"

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int construct(vector<vector<int>>p){
    int n=p.size();
    vector<vector<int>>b(n,vector<int>(n,0));
    vector<bool>used(n,0);
    vector<int>ver;
    for(int i=0;i<n;i++){
        if(!used[i]){
            queue<int>q;
            q.push(i);
            used[i]=true;
            while(!q.empty()){
                int x=q.front();
                ver.pb(x);
                q.pop();
                for(int j=0;j<n;j++){
                    if(p[x][j]==1&&!used[j]){
                        used[j]=true;
                        q.push(j);
                    }
                }
            }
            for(auto x:ver){
                for(auto y:ver){
                    if(x!=y&&p[x][y]!=1){
                        return 0;
                    }
                }
            }
            for(int j=1;j<ver.size();j++){
                b[ver[j]][ver[j-1]]=1;
                b[ver[j-1]][ver[j]]=1;
            }
            ver.clear();
        }
    }
    build(b);
    return 1;
}

Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:41:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |             for(int j=1;j<ver.size();j++){
      |                         ~^~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 10 / 10
• Subtask 3: 0 / 19
• Subtask 4: 0 / 35
• Subtask 5: 0 / 21
• Subtask 6: 0 / 4