oj.uz

Submission #486709

# Submission time Handle Problem Language Result Execution time Memory
486709 2021-11-12T12:59:06 Z urosk Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 1547 ms 109168 KB 
//https://oj.uz/problem/view/JOI20_joitter2
// __builtin_popcount(x) broj bitova
// __builtin_popcountll(x)
// __builtin_clz(x) vodece nule
// __builtin_clzll(x)
// __builtin_ctz(x) nule na pocetku
// __builtin_ctzll(x)
// 2000000011
// 2000000033
//#include "bits/stdc++.h"
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <ctime>
#include <cassert>
#include <complex>
#include <string>
#include <cstring>
#include <chrono>
#include <random>
#include <bitset>
#include <array>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) int(a.size())
#define all(a) a.begin(),a.end()
#define rall(a) a.begin(),a.end(),greater<int>()
#define getunique(v) {sort(all(v)); v.erase(unique(all(v)), v.end());}
#define pi 3.14159265358979323846
#define here cerr<<"---------------------------\n"
#define ceri(a,l,r) {for(ll i = l;i<=r;i++) cerr<<a[i]<< " ";cerr<<endl;}
#define ceri2(a,l,r,n,m) {for(ll i = l;i<=r;i++){for(ll j = n;j<=m;j++) cerr<<a[i][j]<< " ";cerr<<endl;}}
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
using namespace std;
using namespace __gnu_pbds;

typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
    return uniform_int_distribution<ll>(l,r)(rng);
}

void setIO(string inoutname)
{
	freopen((inoutname+".in").c_str(),"r",stdin);
    	freopen((inoutname+".out").c_str(),"w",stdout);
}
#define mod 1
ll gcd(ll a, ll b)
{
   if(b==0) return a;
   if(a==0) return b;
   if(a>=b)  return gcd(a%b,b);
   return  gcd(a,b%a);
}
ll lcm(ll a,ll b){
   return (a/gcd(a,b))*b;
}
ll add(ll a,ll b){
	a+=b;
	a+=mod;
	if(a>=mod) a%=mod;
	return a;
}
ll mul(ll a,ll b){return(a*b)%mod;}
#define maxn 100005
ll n,m,ans = 0;
ll dsu[maxn];
ll sizi[maxn];
set<ll> g[maxn],rg[maxn],v[maxn];
queue<pll> tomrg;
ll root(ll x){
    while(x!=dsu[x]) x = dsu[x];
    return x;
}
ll dsu_siz(ll x){x = root(x);return sz(g[x])+sz(rg[x])+sz(v[x]);}
void updweak(ll x,ll y){
    g[x].insert(y);
    rg[y].insert(x);
    if(g[y].count(x)) tomrg.push({x,y});
}
void mrg(ll x,ll y){
    if(x==y) return;
    if(dsu_siz(x)<dsu_siz(y)) swap(x,y);
    ans+=sizi[x]*sz(v[y]) + sizi[y]*sz(v[x]);
    dsu[y] = x;
    sizi[x]+=sizi[y];
    for(ll z : v[y]){
        if(v[x].count(z)) ans-=sizi[x];
        else v[x].insert(z);
    }

    rg[x].erase(y); g[x].erase(y);
    rg[y].erase(x); g[y].erase(x);
    for(ll z : g[y]){
        rg[y].erase(z);
        updweak(x,z);
    }
    for(ll z : rg[y]){
        rg[x].erase(z);
        updweak(z,x);
    }
}
void tc(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
    cin >> n >> m;
    iota(dsu+1,dsu+n+1,1);
    fill(sizi+1,sizi+n+1,1);
    for(ll i = 1;i<=n;i++) v[i].insert(i);
    for(ll ii = 1;ii<=m;ii++){
        ll x,y; cin >> x >> y;
        y = root(y);
        if(root(x)!=y&&!v[y].count(x)){
            v[y].insert(x);
            ans+=sizi[y];
            x = root(x);
            updweak(x,y);
        }
        while(!tomrg.empty()){
            pll p = tomrg.front();
            tomrg.pop();
            x = p.fi;
            y = p.sc;
            mrg(root(x),root(y));
        }
        cout<<ans<<endl;
    }
}
int main(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
	//setIO("lol");
	int t; t = 1;
	while(t--){
		tc();
	}
	return 0;
}

Compilation message

joitter2.cpp: In function 'void setIO(std::string)':
joitter2.cpp:68:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |  freopen((inoutname+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joitter2.cpp:69:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |      freopen((inoutname+".out").c_str(),"w",stdout);
      |      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14344 KB Output is correct
6 Correct 9 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct
19 Correct 7 ms 14412 KB Output is correct
20 Correct 7 ms 14440 KB Output is correct
21 Correct 11 ms 14432 KB Output is correct
22 Correct 7 ms 14412 KB Output is correct
23 Correct 7 ms 14412 KB Output is correct
24 Correct 7 ms 14412 KB Output is correct
25 Correct 8 ms 14412 KB Output is correct
26 Correct 8 ms 14412 KB Output is correct
27 Correct 9 ms 14344 KB Output is correct
28 Correct 7 ms 14412 KB Output is correct
29 Correct 8 ms 14412 KB Output is correct
30 Correct 8 ms 14412 KB Output is correct
31 Correct 8 ms 14412 KB Output is correct
32 Correct 7 ms 14312 KB Output is correct
33 Correct 8 ms 14416 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14344 KB Output is correct
6 Correct 9 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct
19 Correct 7 ms 14412 KB Output is correct
20 Correct 7 ms 14440 KB Output is correct
21 Correct 11 ms 14432 KB Output is correct
22 Correct 7 ms 14412 KB Output is correct
23 Correct 7 ms 14412 KB Output is correct
24 Correct 7 ms 14412 KB Output is correct
25 Correct 8 ms 14412 KB Output is correct
26 Correct 8 ms 14412 KB Output is correct
27 Correct 9 ms 14344 KB Output is correct
28 Correct 7 ms 14412 KB Output is correct
29 Correct 8 ms 14412 KB Output is correct
30 Correct 8 ms 14412 KB Output is correct
31 Correct 8 ms 14412 KB Output is correct
32 Correct 7 ms 14312 KB Output is correct
33 Correct 8 ms 14416 KB Output is correct
34 Correct 9 ms 14540 KB Output is correct
35 Correct 76 ms 20536 KB Output is correct
36 Correct 112 ms 23956 KB Output is correct
37 Correct 108 ms 23980 KB Output is correct
38 Correct 102 ms 23396 KB Output is correct
39 Correct 9 ms 14796 KB Output is correct
40 Correct 12 ms 15600 KB Output is correct
41 Correct 13 ms 15660 KB Output is correct
42 Correct 9 ms 14796 KB Output is correct
43 Correct 10 ms 14796 KB Output is correct
44 Correct 10 ms 14788 KB Output is correct
45 Correct 10 ms 14796 KB Output is correct
46 Correct 10 ms 14796 KB Output is correct
47 Correct 11 ms 15068 KB Output is correct
48 Correct 12 ms 15180 KB Output is correct
49 Correct 20 ms 16204 KB Output is correct
50 Correct 111 ms 24120 KB Output is correct
51 Correct 17 ms 15316 KB Output is correct
52 Correct 88 ms 21992 KB Output is correct
53 Correct 18 ms 15948 KB Output is correct
54 Correct 112 ms 22868 KB Output is correct
55 Correct 14 ms 15436 KB Output is correct
56 Correct 14 ms 15364 KB Output is correct
57 Correct 14 ms 15448 KB Output is correct
58 Correct 12 ms 15436 KB Output is correct
59 Correct 10 ms 15180 KB Output is correct
60 Correct 81 ms 20064 KB Output is correct
61 Correct 13 ms 15196 KB Output is correct
62 Correct 126 ms 23336 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14412 KB Output is correct
2 Correct 7 ms 14412 KB Output is correct
3 Correct 7 ms 14412 KB Output is correct
4 Correct 7 ms 14412 KB Output is correct
5 Correct 7 ms 14344 KB Output is correct
6 Correct 9 ms 14412 KB Output is correct
7 Correct 8 ms 14412 KB Output is correct
8 Correct 8 ms 14412 KB Output is correct
9 Correct 8 ms 14412 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 7 ms 14412 KB Output is correct
12 Correct 7 ms 14412 KB Output is correct
13 Correct 7 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 7 ms 14412 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 7 ms 14412 KB Output is correct
18 Correct 7 ms 14412 KB Output is correct
19 Correct 7 ms 14412 KB Output is correct
20 Correct 7 ms 14440 KB Output is correct
21 Correct 11 ms 14432 KB Output is correct
22 Correct 7 ms 14412 KB Output is correct
23 Correct 7 ms 14412 KB Output is correct
24 Correct 7 ms 14412 KB Output is correct
25 Correct 8 ms 14412 KB Output is correct
26 Correct 8 ms 14412 KB Output is correct
27 Correct 9 ms 14344 KB Output is correct
28 Correct 7 ms 14412 KB Output is correct
29 Correct 8 ms 14412 KB Output is correct
30 Correct 8 ms 14412 KB Output is correct
31 Correct 8 ms 14412 KB Output is correct
32 Correct 7 ms 14312 KB Output is correct
33 Correct 8 ms 14416 KB Output is correct
34 Correct 9 ms 14540 KB Output is correct
35 Correct 76 ms 20536 KB Output is correct
36 Correct 112 ms 23956 KB Output is correct
37 Correct 108 ms 23980 KB Output is correct
38 Correct 102 ms 23396 KB Output is correct
39 Correct 9 ms 14796 KB Output is correct
40 Correct 12 ms 15600 KB Output is correct
41 Correct 13 ms 15660 KB Output is correct
42 Correct 9 ms 14796 KB Output is correct
43 Correct 10 ms 14796 KB Output is correct
44 Correct 10 ms 14788 KB Output is correct
45 Correct 10 ms 14796 KB Output is correct
46 Correct 10 ms 14796 KB Output is correct
47 Correct 11 ms 15068 KB Output is correct
48 Correct 12 ms 15180 KB Output is correct
49 Correct 20 ms 16204 KB Output is correct
50 Correct 111 ms 24120 KB Output is correct
51 Correct 17 ms 15316 KB Output is correct
52 Correct 88 ms 21992 KB Output is correct
53 Correct 18 ms 15948 KB Output is correct
54 Correct 112 ms 22868 KB Output is correct
55 Correct 14 ms 15436 KB Output is correct
56 Correct 14 ms 15364 KB Output is correct
57 Correct 14 ms 15448 KB Output is correct
58 Correct 12 ms 15436 KB Output is correct
59 Correct 10 ms 15180 KB Output is correct
60 Correct 81 ms 20064 KB Output is correct
61 Correct 13 ms 15196 KB Output is correct
62 Correct 126 ms 23336 KB Output is correct
63 Correct 498 ms 68372 KB Output is correct
64 Correct 490 ms 68420 KB Output is correct
65 Correct 499 ms 68388 KB Output is correct
66 Correct 183 ms 34384 KB Output is correct
67 Correct 690 ms 97444 KB Output is correct
68 Correct 183 ms 34368 KB Output is correct
69 Correct 364 ms 35560 KB Output is correct
70 Correct 218 ms 34404 KB Output is correct
71 Correct 213 ms 34384 KB Output is correct
72 Correct 515 ms 54272 KB Output is correct
73 Correct 542 ms 56860 KB Output is correct
74 Correct 1547 ms 109168 KB Output is correct
75 Correct 615 ms 46788 KB Output is correct
76 Correct 1000 ms 71324 KB Output is correct
77 Correct 1052 ms 71592 KB Output is correct
78 Correct 240 ms 41476 KB Output is correct
79 Correct 420 ms 47316 KB Output is correct
80 Correct 215 ms 40388 KB Output is correct
81 Correct 360 ms 44612 KB Output is correct
82 Correct 1004 ms 66756 KB Output is correct
83 Correct 976 ms 66768 KB Output is correct
84 Correct 801 ms 69640 KB Output is correct
85 Correct 812 ms 69648 KB Output is correct
86 Correct 297 ms 67232 KB Output is correct
87 Correct 329 ms 69432 KB Output is correct
88 Correct 541 ms 55460 KB Output is correct
89 Correct 962 ms 68772 KB Output is correct