Submission #393455

#	Time	Username	Problem	Language	Result	Execution time	Memory
393455		peuch	Gondola (IOI14_gondola)	C++17	Compilation error	0 ms	0 KiB

gondola

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

const int MAXN = 1510;

int N;
int rep[MAXN], tam[MAXN];
int conect[MAXN][MAXN];

int find(int a){
	if(rep[a] == a) return a;
	return rep[a] = find(rep[a]);
}

void uni(int a, int b){
	a = find(a);
	b = find(b);
	if(tam[a] < tam[b]) swap(a, b);
	rep[b] = a;
	tam[a] += b;
	for(int i = 0; i < N; i++)
		conect[a][i] = conect[a][i] + conect[b][i], conect[i][a] = conect[a][i] + conect[b][i];
}

void initialize(int n) {
	N = n;
	for(int i = 0; i < N; i++){
		rep[i] = i;
		tam[i] = 1;	
		for(int j = 0; j < N; j++)
			conect[i][j] = 1;
		conect[i][i] = 0;
	}
}

int hasEdge(int u, int v) {
	u = find(u), v = find(v);
	if(conect[u][v] == 1){
		uni(u, v);
		return 1;
	}
	conect[u][v]--;
	conect[v][u]--;
	return 0;
}

Compilation message (stderr)

/tmp/ccxY3WRb.o: In function `main':
grader.cpp:(.text.startup+0xb6): undefined reference to `valid'
grader.cpp:(.text.startup+0x108): undefined reference to `countReplacement'
grader.cpp:(.text.startup+0x132): undefined reference to `replacement'
collect2: error: ld returned 1 exit status