Submission #595353

#	Time	Username	Problem	Language	Result	Execution time	Memory
595353		birthdaycake	Game (IOI14_game)	C++14	Compilation error	0 ms	0 KiB

game

#include "game.h"
#include<bits/stdc++.h>
#define endl '\n'
#define mod 1000000007
using namespace std;

set<int>cnt[2000001];
int adj[1501][1501];
int dsu[2000001],rnk[2000001];
int N;
int Find(int x){
    if(dsu[x] == x) return x;
    return dsu[x] = Find(dsu[x]);
}

void Unite(int a, int b){
    a = Find(a); b = Find(b);
    if(rnk[a] < rnk[b]) swap(a,b);
    rnk[a] += rnk[b];
    dsu[b] = a;
    for(auto s: cnt[b]){
        adj[a][s] += adj[b][s];
        adj[s][a] += adj[s][b];
    }
    
    
}
void initialize(int n) {
    N = n;
    for(int i = 1; i <= n; i++) {
        dsu[i] = i;
        rnk[i] = 1;
    }
    
}

int hasEdge(int u, int v) {
    u++; v++;
    int set_a = Find(u), set_b = Find(v);
    if(set_a == set_b) return 0;
    
    cnt[set_a].insert(set_b);
    cnt[set_b].insert(set_a);
    adj[set_a][set_b]++;
    adj[set_b][set_a]++;
    if(adj[set_a][set_b] != rnk[set_b] * rnk[set_a]) return 0;
    if(adj[set_b][set_a] != rnk[set_a] * rnk[set_b]) return 0;
    Unite(u,v);
    
    return 1;
}

 

int read_int() {
    int x;
    assert(scanf("%d", &x) == 1);
    return x;
}

int main() {
    int n, u, v;
    n = read_int();
    initialize(n);
    for (int i = 0; i < n * (n - 1) / 2; i++) {
        u = read_int();
        v = read_int();
        printf("%d\n", hasEdge(u, v));
    }
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccY8vDVX.o: in function `read_int()':
grader.cpp:(.text+0x0): multiple definition of `read_int()'; /tmp/ccnZZil1.o:game.cpp:(.text+0x470): first defined here
/usr/bin/ld: /tmp/ccY8vDVX.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccnZZil1.o:game.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status