#include "bits/extc++.h"
using namespace std;
template <typename T>
void dbgh(const T& t) {
cerr << t << endl;
}
template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
cerr << t << " | ";
dbgh(u...);
}
#ifdef DEBUG
#define dbg(...) \
cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr \
if (false) \
cerr
#endif
#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())
const int maxn = 1505;
int n, par[maxn], cnt[maxn][maxn];
int find(int u) {
return par[u] < 0 ? u : (par[u] = find(par[u]));
}
int siz(int u) {
return -par[find(u)];
}
void initialize(int _n) {
n = _n;
memset(par, -1, sizeof(par));
}
int hasEdge(int u, int v) {
u = find(u);
v = find(v);
cnt[u][v]++;
cnt[v][u]++;
if (cnt[u][v] == siz(u) * siz(v)) {
par[v] += par[u];
par[u] = v;
for (int i = 0; i < n; i++) {
cnt[v][i] += cnt[u][i];
}
for (int i = 0; i < n; i++) {
if (i != v) {
cnt[i][v] += cnt[i][u];
}
}
return 1;
}
return 0;
}
