Submission #581359

#	Time	Username	Problem	Language	Result	Execution time	Memory
581359		jasmin	Game (IOI14_game)	C++17	Compilation error	0 ms	0 KiB

game

#include<bits/stdc++.h>
using namespace std;
#define int long long

vector<int> chef;
vector<int> s;
vector<int> con;
int n;
int find(int a){
    if(chef[a]==a) return a;
    return chef[a]=find(chef[a]);
}
void unite(int a, int b){
    assert(find(a)!=find(b));        
    s[find(a)]+=s[find(b)];
    con[find(a)]+=con[find(b)];
    chef[find(b)]=find(a);
}

void initialize(int a){
    n=a;
    chef.assign(n, 0);
    iota(chef.begin(), chef.end(), 0);
    s.assign(n, 1);
    con.assign(n, 0);
}

int hasEdge(int u, int v){
    assert(find(u)!=find(v));
    con[find(u)]++;
    con[find(v)]++;
    if(con[find(u)]==s[find(u)]*(n-1)){
        unite(u, v);
        return 1;
    }
    else if(con[find(v)]==s[find(v)]*(n-1)){
        unite(u, v);
        return 1;
    }
    return 0;
}

/*signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;
    initialize(n);
    for(int i=0; i<(n*(n-1))/2; i++){
        int a, b;
        cin >> a >> b;
        cout << hasEdge(a, b) << "\n" << flush;
    }
}*/

Compilation message (stderr)

/usr/bin/ld: /tmp/ccsEg40N.o: in function `main':
grader.cpp:(.text.startup+0x2a): undefined reference to `initialize(int)'
/usr/bin/ld: grader.cpp:(.text.startup+0x94): undefined reference to `hasEdge(int, int)'
collect2: error: ld returned 1 exit status