#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long int ll;
typedef vector<ll> vi;
typedef vector<vector<ll>> vvi;
typedef pair<ll,ll> pi;
typedef map<ll,ll> mi;
typedef long double ld;
typedef vector<ld> vd;
typedef vector<vector<ld>> vvd;
typedef pair<ld,ld> pd;
#define ff first
#define ss second
#define srt(a) sort(a.begin(),a.end());
#define fip(k, n) for (ll i = k; i < n; i++)
#define fjp(k, n) for (ll j = k; j < n; j++)
#define fin(k, n) for (ll i = k; i >= n; i--)
#define fjn(k, n) for (ll j = k; j >= n; j--)
#define fp(k, n, m) for (ll k = n; k < m; k++)
#define fn(k, n, m) for (ll k = n; k >= m; k--)
#define ordered_set tree<pi, null_type,less< pi >, rb_tree_tag,tree_order_statistics_node_update>
#define totalOne(n) __builtin_popcount(n)
#define backZero(n) __builtin_ctzll(n)
#define frontZero(n) __builtin_clzll(n)
#define fx(k) for ( auto x : k )
#define test ll t;cin >> t;while (t--)
#define nli "\n"
// ==========================(debug)============================================================================================== //
#ifndef ONLINE_JUDGE
#define debug(x) cerr << #x <<" "; _printn(x); cerr << nli;
#else
#define debug(x)
#endif
void _printn(ll x){ cerr<<x<<" "; }
void _printn(int x){ cerr<<x<<" "; }
void _printn(ld x){ cerr<<x<<" "; }
void _printn(double x){ cerr<<x<<" "; }
void _printn(string x){ cerr<<x<<" "; }
void _printn(char x){ cerr<<x<<" "; }
void _printn(bool x){ cerr<<x<<" "; }
template<class T,class V>void _printn(pair<T,V> vv);
template<class T> void _printn(vector<T> vv);
template<class T> void _printn(set<T> vv);
template<class T,class V> void _printn(map<T,V> vv);
template<class T> void _printn(multiset<T> vv);
template<class T,class V>void _printn(pair<T,V> vv){ cerr<<"( ";_printn(vv.ff);cerr<<",";_printn(vv.ss);cerr<<")";}
template<class T> void _printn(vector<T> vv){ cerr<<"[ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"]"; };
template<class T> void _printn(set<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T> void _printn(multiset<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T,class V> void _printn(map<T,V> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
// ==========================(debug)============================================================================================== //
ll n,m,tp,tp2,res,cnt,sum,tptp,ans;
const ll mx = 5e5+5;
const ll mod = 1e9+7;
// ==========================(MOD)=============================================================================================== //
ll mod_add(ll aa,ll bb){ return ((aa%mod)+(bb%mod))%mod; }
ll mod_minus(ll aa,ll bb){ return (((aa%mod)-(bb%mod))+10*mod)%mod; }
ll mod_mul(ll aa,ll bb){ return ((aa%mod)*(bb%mod))%mod; }
ll mod_power(ll aa,ll bb){ aa%=mod; ll empowered = 1; bb%=mod-1; while(bb > 0){ if(bb & 1) empowered = mod_mul(empowered,aa); bb = bb >> 1; aa = mod_mul(aa,aa); } return empowered; }
ll mod_divi(ll aa,ll bb){ aa=mod_mul(aa,mod_power(bb,mod-2)); return aa; }
// ==========================(MOD)=============================================================================================== //
bool f = false;
ll sr,de;
typedef struct Disjoint_Set_Union{
vi sz,par;
set<ll> st[mx];
queue<pi> q;
set<ll> adj[mx];
set<ll> radj[mx];
pi pt;
void init(ll k){
k += 5;
sz.resize(k);
par.resize(k);
fip(1,k+1){
sz[i] = 1;
par[i] = i;
st[i].insert(i);
}
return;
}
ll find(ll k){
return ((par[k]==k)?k:par[k]=find(par[k]));
}
ll get(ll x){
return st[x].size() + adj[x].size() + radj[x].size();
}
void aa(ll u,ll v){
adj[u].insert(v);
radj[v].insert(u);
if(adj[v].find(u)!=adj[v].end())
q.push({u,v});
return;
}
void bb(ll u,ll v){
u = find(u);
v = find(v);
if(u==v)
return;
if(get(u) < get(v))
swap(u,v);
ans += sz[u] * st[v].size();
ans += sz[v] * st[u].size();
sz[u] += sz[v];
par[v] = u;
fx(st[v]){
if(st[u].find(x)!=st[u].end())
ans -= sz[u];
else
st[u].insert(x);
}
adj[u].erase(v);
adj[v].erase(u);
radj[u].erase(v);
radj[v].erase(u);
fx(adj[v]){
radj[x].erase(v);
aa(u,x);
}
fx(radj[v]){
adj[x].erase(v);
aa(x,u);
}
}
void unite(ll u,ll v){
v = find(v);
if(st[v].find(u)==st[v].end() && find(u)!=v){
st[v].insert(u);
u = find(u);
ans += sz[v];
aa(u,v);
while(q.size()){
pt = q.front();
q.pop();
bb(pt.ff,pt.ss);
}
}
}
}DSU;
DSU dsu;
int main(){
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
// #ifndef ONLINE_JUDGE
// freopen("input1.txt", "r", stdin);
// freopen("output1.txt", "w", stdout);
// freopen("error1.txt", "w", stderr);
// #endif // ONLINE_JUDGE
cin>>n>>m;
dsu.init(n);
ans = 0;
while(m--){
cin>>sr>>de;
dsu.unite(sr,de);
cout<<ans<<nli;
}
cerr << "Time elapsed: " << setprecision(6) << 1000.0 * clock() / CLOCKS_PER_SEC << "ms\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
37 ms |
70748 KB |
Output is correct |
| 2 |
Correct |
16 ms |
70748 KB |
Output is correct |
| 3 |
Correct |
16 ms |
70748 KB |
Output is correct |
| 4 |
Runtime error |
71 ms |
143288 KB |
Execution killed with signal 6 |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
37 ms |
70748 KB |
Output is correct |
| 2 |
Correct |
16 ms |
70748 KB |
Output is correct |
| 3 |
Correct |
16 ms |
70748 KB |
Output is correct |
| 4 |
Runtime error |
71 ms |
143288 KB |
Execution killed with signal 6 |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
37 ms |
70748 KB |
Output is correct |
| 2 |
Correct |
16 ms |
70748 KB |
Output is correct |
| 3 |
Correct |
16 ms |
70748 KB |
Output is correct |
| 4 |
Runtime error |
71 ms |
143288 KB |
Execution killed with signal 6 |
| 5 |
Halted |
0 ms |
0 KB |
- |
