Submission #1165696

#	Time	Username	Problem	Language	Result	Execution time	Memory
1165696		em4ma2	September (APIO24_september)	C++20	Compilation error	0 ms	0 KiB

september

#include "bits/stdc++.h"

using namespace std;

#define ll long long
#define pb push_back
#define applejuice ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);

const int mxsz=1e5+4;

int cnt=0;
vector<int>vis(mxsz);
vector<vector<int>>adj(mxsz);

void dfs(int i) {
    if (!vis[i]) {
        vis[i] = 1;
        cnt++;
        for (auto x: adj[i]) {
            dfs(x);
        }
    }
}

int solve(int n,int m,vector<int>f,const vector<vector<int>>s){
    int ans=0;
    cnt=0;
    vis=vector<int>(mxsz,0);
    adj=vector<vector<int>>(mxsz);
    for (int i=1;i<n;i++){
        adj[f[i]].pb(i);
    }
    for (int i=0;i<n-1;i++){
        for (int j=0;j<m;j++){
            dfs(s[j][i]);
        }
        if (cnt==i+1)ans++;
    }
    return ans;
}

int main(){
    applejuice;
    int n,m;
    cin>>n>>m;
    vector<int>a(n);
    for (int i=0;i<n;i++){
        cin>>a[i];
    }
    vector<vector<int>>s(m);
    for (int i=0;i<m;i++){
        s[i]=vector<int>(n-1);
        for (int j=0;j<n-1;j++) {
            cin >> s[i][j];
        }
    }
    cout<<solve(n,m,a,s);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccz7CTTb.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cctubTXD.o:september.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status