oj.uz

답안 #882683

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
882683 2023-12-03T13:04:03 Z 8pete8 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++14
100 / 100
 924 ms 129720 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include <iomanip>
#include<numeric>
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define vi vector<int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-loops")
using namespace std;
const int mod=1e9+7,mxn=5e5+5,lg=30,inf=1e18,minf=-1e18;
int pa[mxn+10],sz[mxn+10];
set<int>con[mxn+10],rcon[mxn+10],fol[mxn+10];
// ->, <-, all node that follow in component||component of that node
queue<pii>todo;
int find(int u){return pa[u]==u?u:pa[u]=find(pa[u]);}
ll ans;
void merg(int a,int b){
	a=find(a),b=find(b);
	if(a==b)return;
	if(sz[a]<sz[b])swap(a,b);
	ans+=(fol[b].size()*sz[a])+(sz[b]*fol[a].size());
	pa[b]=a;
	sz[a]+=sz[b];
	for(auto i:fol[b]){
		if(fol[a].count(i))ans-=sz[a];
		else fol[a].insert(i);
	}
	con[b].erase(a),con[a].erase(b),rcon[a].erase(b),rcon[b].erase(a);
	for(auto i:con[b]){
		rcon[i].erase(b);
		rcon[i].insert(a);
		con[a].insert(i);
		if(rcon[a].count(i))todo.push({i,a});
	}
	for(auto i:rcon[b]){
		con[i].erase(b);
		con[i].insert(a);
		rcon[a].insert(i);
		if(con[a].count(i))todo.push({i,a});
	}
}
int32_t main(){
	fastio
	int n,m;cin>>n>>m;
	for(int i=1;i<=n;i++)pa[i]=i,sz[i]=1,fol[i].insert(i);
	while(m--){
		int a,b;cin>>a>>b;
		b=find(b);
		int g=find(a);
		if(g==b){
			cout<<ans<<'\n';
			continue;
		}
		if(!fol[b].count(a)){
			fol[b].insert(a);
			ans+=sz[b];
			con[g].insert(b);
			rcon[b].insert(g);
			if(con[b].count(g))todo.push({g,b});
		}
		while(!todo.empty())merg(todo.front().f,todo.front().s),todo.pop();
		cout<<ans<<'\n';
	}
	return 0;
}

Compilation message

joitter2.cpp:33:41: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   33 | const int mod=1e9+7,mxn=5e5+5,lg=30,inf=1e18,minf=-1e18;
      |                                         ^~~~
joitter2.cpp:33:51: warning: overflow in conversion from 'double' to 'int' changes value from '-1.0e+18' to '-2147483648' [-Woverflow]
   33 | const int mod=1e9+7,mxn=5e5+5,lg=30,inf=1e18,minf=-1e18;
      |                                                   ^~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 74332 KB Output is correct
2 Correct 16 ms 74332 KB Output is correct
3 Correct 17 ms 74332 KB Output is correct
4 Correct 17 ms 74588 KB Output is correct
5 Correct 15 ms 74328 KB Output is correct
6 Correct 16 ms 74332 KB Output is correct
7 Correct 16 ms 74460 KB Output is correct
8 Correct 16 ms 74332 KB Output is correct
9 Correct 17 ms 74548 KB Output is correct
10 Correct 15 ms 74328 KB Output is correct
11 Correct 15 ms 74464 KB Output is correct
12 Correct 15 ms 74508 KB Output is correct
13 Correct 14 ms 74332 KB Output is correct
14 Correct 14 ms 74508 KB Output is correct
15 Correct 15 ms 74504 KB Output is correct
16 Correct 16 ms 74512 KB Output is correct
17 Correct 14 ms 74328 KB Output is correct
18 Correct 15 ms 74584 KB Output is correct
19 Correct 15 ms 74508 KB Output is correct
20 Correct 14 ms 74332 KB Output is correct
21 Correct 16 ms 74328 KB Output is correct
22 Correct 16 ms 74332 KB Output is correct
23 Correct 15 ms 74440 KB Output is correct
24 Correct 16 ms 74328 KB Output is correct
25 Correct 15 ms 74328 KB Output is correct
26 Correct 14 ms 74332 KB Output is correct
27 Correct 15 ms 74464 KB Output is correct
28 Correct 17 ms 74512 KB Output is correct
29 Correct 15 ms 74332 KB Output is correct
30 Correct 14 ms 74332 KB Output is correct
31 Correct 16 ms 74484 KB Output is correct
32 Correct 14 ms 74332 KB Output is correct
33 Correct 15 ms 74332 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 74332 KB Output is correct
2 Correct 16 ms 74332 KB Output is correct
3 Correct 17 ms 74332 KB Output is correct
4 Correct 17 ms 74588 KB Output is correct
5 Correct 15 ms 74328 KB Output is correct
6 Correct 16 ms 74332 KB Output is correct
7 Correct 16 ms 74460 KB Output is correct
8 Correct 16 ms 74332 KB Output is correct
9 Correct 17 ms 74548 KB Output is correct
10 Correct 15 ms 74328 KB Output is correct
11 Correct 15 ms 74464 KB Output is correct
12 Correct 15 ms 74508 KB Output is correct
13 Correct 14 ms 74332 KB Output is correct
14 Correct 14 ms 74508 KB Output is correct
15 Correct 15 ms 74504 KB Output is correct
16 Correct 16 ms 74512 KB Output is correct
17 Correct 14 ms 74328 KB Output is correct
18 Correct 15 ms 74584 KB Output is correct
19 Correct 15 ms 74508 KB Output is correct
20 Correct 14 ms 74332 KB Output is correct
21 Correct 16 ms 74328 KB Output is correct
22 Correct 16 ms 74332 KB Output is correct
23 Correct 15 ms 74440 KB Output is correct
24 Correct 16 ms 74328 KB Output is correct
25 Correct 15 ms 74328 KB Output is correct
26 Correct 14 ms 74332 KB Output is correct
27 Correct 15 ms 74464 KB Output is correct
28 Correct 17 ms 74512 KB Output is correct
29 Correct 15 ms 74332 KB Output is correct
30 Correct 14 ms 74332 KB Output is correct
31 Correct 16 ms 74484 KB Output is correct
32 Correct 14 ms 74332 KB Output is correct
33 Correct 15 ms 74332 KB Output is correct
34 Correct 17 ms 74460 KB Output is correct
35 Correct 71 ms 78044 KB Output is correct
36 Correct 92 ms 80372 KB Output is correct
37 Correct 95 ms 80600 KB Output is correct
38 Correct 91 ms 80240 KB Output is correct
39 Correct 17 ms 74584 KB Output is correct
40 Correct 19 ms 75096 KB Output is correct
41 Correct 18 ms 75096 KB Output is correct
42 Correct 16 ms 74588 KB Output is correct
43 Correct 17 ms 74840 KB Output is correct
44 Correct 21 ms 74588 KB Output is correct
45 Correct 21 ms 74588 KB Output is correct
46 Correct 17 ms 74588 KB Output is correct
47 Correct 19 ms 75044 KB Output is correct
48 Correct 19 ms 74844 KB Output is correct
49 Correct 24 ms 75612 KB Output is correct
50 Correct 94 ms 80744 KB Output is correct
51 Correct 20 ms 74840 KB Output is correct
52 Correct 80 ms 78932 KB Output is correct
53 Correct 23 ms 75612 KB Output is correct
54 Correct 88 ms 79608 KB Output is correct
55 Correct 20 ms 75100 KB Output is correct
56 Correct 19 ms 75096 KB Output is correct
57 Correct 21 ms 75100 KB Output is correct
58 Correct 20 ms 75100 KB Output is correct
59 Correct 18 ms 75012 KB Output is correct
60 Correct 69 ms 77568 KB Output is correct
61 Correct 19 ms 74840 KB Output is correct
62 Correct 88 ms 79956 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 74332 KB Output is correct
2 Correct 16 ms 74332 KB Output is correct
3 Correct 17 ms 74332 KB Output is correct
4 Correct 17 ms 74588 KB Output is correct
5 Correct 15 ms 74328 KB Output is correct
6 Correct 16 ms 74332 KB Output is correct
7 Correct 16 ms 74460 KB Output is correct
8 Correct 16 ms 74332 KB Output is correct
9 Correct 17 ms 74548 KB Output is correct
10 Correct 15 ms 74328 KB Output is correct
11 Correct 15 ms 74464 KB Output is correct
12 Correct 15 ms 74508 KB Output is correct
13 Correct 14 ms 74332 KB Output is correct
14 Correct 14 ms 74508 KB Output is correct
15 Correct 15 ms 74504 KB Output is correct
16 Correct 16 ms 74512 KB Output is correct
17 Correct 14 ms 74328 KB Output is correct
18 Correct 15 ms 74584 KB Output is correct
19 Correct 15 ms 74508 KB Output is correct
20 Correct 14 ms 74332 KB Output is correct
21 Correct 16 ms 74328 KB Output is correct
22 Correct 16 ms 74332 KB Output is correct
23 Correct 15 ms 74440 KB Output is correct
24 Correct 16 ms 74328 KB Output is correct
25 Correct 15 ms 74328 KB Output is correct
26 Correct 14 ms 74332 KB Output is correct
27 Correct 15 ms 74464 KB Output is correct
28 Correct 17 ms 74512 KB Output is correct
29 Correct 15 ms 74332 KB Output is correct
30 Correct 14 ms 74332 KB Output is correct
31 Correct 16 ms 74484 KB Output is correct
32 Correct 14 ms 74332 KB Output is correct
33 Correct 15 ms 74332 KB Output is correct
34 Correct 17 ms 74460 KB Output is correct
35 Correct 71 ms 78044 KB Output is correct
36 Correct 92 ms 80372 KB Output is correct
37 Correct 95 ms 80600 KB Output is correct
38 Correct 91 ms 80240 KB Output is correct
39 Correct 17 ms 74584 KB Output is correct
40 Correct 19 ms 75096 KB Output is correct
41 Correct 18 ms 75096 KB Output is correct
42 Correct 16 ms 74588 KB Output is correct
43 Correct 17 ms 74840 KB Output is correct
44 Correct 21 ms 74588 KB Output is correct
45 Correct 21 ms 74588 KB Output is correct
46 Correct 17 ms 74588 KB Output is correct
47 Correct 19 ms 75044 KB Output is correct
48 Correct 19 ms 74844 KB Output is correct
49 Correct 24 ms 75612 KB Output is correct
50 Correct 94 ms 80744 KB Output is correct
51 Correct 20 ms 74840 KB Output is correct
52 Correct 80 ms 78932 KB Output is correct
53 Correct 23 ms 75612 KB Output is correct
54 Correct 88 ms 79608 KB Output is correct
55 Correct 20 ms 75100 KB Output is correct
56 Correct 19 ms 75096 KB Output is correct
57 Correct 21 ms 75100 KB Output is correct
58 Correct 20 ms 75100 KB Output is correct
59 Correct 18 ms 75012 KB Output is correct
60 Correct 69 ms 77568 KB Output is correct
61 Correct 19 ms 74840 KB Output is correct
62 Correct 88 ms 79956 KB Output is correct
63 Correct 561 ms 123564 KB Output is correct
64 Correct 499 ms 123220 KB Output is correct
65 Correct 517 ms 123208 KB Output is correct
66 Correct 186 ms 92876 KB Output is correct
67 Correct 418 ms 120628 KB Output is correct
68 Correct 204 ms 92812 KB Output is correct
69 Correct 327 ms 93988 KB Output is correct
70 Correct 224 ms 92976 KB Output is correct
71 Correct 208 ms 92752 KB Output is correct
72 Correct 372 ms 105300 KB Output is correct
73 Correct 420 ms 107076 KB Output is correct
74 Correct 924 ms 129720 KB Output is correct
75 Correct 547 ms 100748 KB Output is correct
76 Correct 687 ms 114348 KB Output is correct
77 Correct 676 ms 114332 KB Output is correct
78 Correct 206 ms 96600 KB Output is correct
79 Correct 385 ms 101048 KB Output is correct
80 Correct 188 ms 95312 KB Output is correct
81 Correct 305 ms 99372 KB Output is correct
82 Correct 685 ms 113368 KB Output is correct
83 Correct 779 ms 113472 KB Output is correct
84 Correct 606 ms 112212 KB Output is correct
85 Correct 628 ms 112192 KB Output is correct
86 Correct 297 ms 125732 KB Output is correct
87 Correct 373 ms 127928 KB Output is correct
88 Correct 491 ms 106420 KB Output is correct
89 Correct 850 ms 112100 KB Output is correct