#include <bits/stdc++.h> using namespace std; #define pb push_back #define sz(a) (int)a.size() int n, p[1501]; vector<int> v[1501]; int cnt[1501][1501]; int findSet(int i){return i==p[i]?i:p[i]=findSet(p[i]);} int unionSet(int x, int y){ if(x==y) return 0; if(sz(v[x])<sz(v[y])) swap(x,y); for(auto u : v[y]) v[x].pb(u); v[y].clear(); bool vis[n+1]; fill(vis,vis+n,0); for(int zz = 0; zz < n; zz++){ int z = findSet(zz); if(vis[z]) continue; vis[z]=1; cnt[min(z,x)][max(z,x)]+=cnt[x][y]; } p[y] = x; return 1; } void initialize(int N){ n = N; for(int i =0; i < n; i++){ p[i]=i,v[i].pb(i); for(int j = i+1; j < n; j++) cnt[i][j]=1; } } int hasEdge(int u, int vv){ int x = findSet(u), y = findSet(vv); if(x>y) swap(x,y),swap(u,vv); cnt[x][y]--; return !cnt[x][y]?0:unionSet(x,y); }

game.cpp: In function 'int unionSet(int, int)':
game.cpp:13:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   13 |     for(auto u : v[y]) v[x].pb(u); v[y].clear();
      |     ^~~
game.cpp:13:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   13 |     for(auto u : v[y]) v[x].pb(u); v[y].clear();
      |                                    ^
game.cpp:18:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   18 |         if(vis[z]) continue; vis[z]=1;
      |         ^~
game.cpp:18:30: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   18 |         if(vis[z]) continue; vis[z]=1;
      |                              ^~~