Submission #76644366

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int n;
vector<vector<int>> g;
signed main(){
    scanf("%d",&n);
    g.resize(n+1);
    for(int i=1;i<=n;++i){
        int m;
        scanf("%d",&m);
        for(int j=0;j<m;++j){
            int x;
            scanf("%d",&x);
            g[x].push_back(i);
        }
    }
    for(int i=1;i<=n;++i){
        printf("%d",(int)g[i].size());
        for(int j=0;j<g[i].size();++j) printf(" %d",g[i][j]);
        printf("\n");
    }
    return 0;
}

Submission Info

Compile Error

./Main.cpp:19:22: warning: comparison of integers of different signs: 'int' and 'size_type' (aka 'unsigned long') [-Wsign-compare]
   19 |         for(int j=0;j<g[i].size();++j) printf(" %d",g[i][j]);
      |                     ~^~~~~~~~~~~~
1 warning generated.

Judge Result