oj.uz

답안 #211995

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
211995 2020-03-21T22:21:08 Z godwind 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++14
100 / 100
 3068 ms 172040 KB 
// O O O O O O O O O O O O O O O OO O OO O OO O O O TTCH O TTTCH O TTTCH O O O O
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#pragma GCC target("sse,sse2,sse3,ssse3,popcnt,abm,mmx")
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <stdio.h>
#include <cstdio>
#include <math.h>
#include <cmath>
#include <string>
#include <cstring>
#include <queue>
#include <deque>
// #include <random>
#include <iomanip>
#include <bitset>
#include <cassert>
 
using namespace std;

#define int long long
#define y1 y11
#define double long double
#define less less228
#define left left228
#define right right228
#define list list228
#define all(v) v.begin(), v.end()
 
 
 
template<typename T> void uin(T &a, T b) {
    if (b < a) a = b;
}
template<typename T> void uax(T &a, T b) {
    if (b > a) a = b;
}

const int N = 100 * 1000 + 228;

int p[N], sz[N];
vector<int> in[N];

void init(int n) {
    for (int i = 1; i <= n; ++i) {
        p[i] = i;
        sz[i] = 1;
        in[i].emplace_back(i);
    }
}
int getp(int v){
    if(v==p[v])return v;
    p[v]=getp(p[v]);
    return p[v];
}
int n,m;
int ans = 0;

map< pair<int,int>, bool> is;
map< pair<int,int>,int> between;
set<int> vic[N], vouc[N];

void squeeze(int c1, int c2) {
    ans -= between[{c1, c2}] * sz[c2];
    ans -= between[{c2, c1}] * sz[c1];
    ans += 2LL * sz[c1] * sz[c2];
    if (sz[c1] > sz[c2]) swap(c1, c2);
    for (int x : in[c1]) {
        if (vic[c2].count(x)) {
            vic[c2].erase(x);
            vouc[x].erase(c2);
        }
    }
    int izn = (int)vic[c2].size();
    vector<int> suspicion;
    int cnt = 0;
    for (int x : vic[c1]) {
        if (getp(x) == c2) continue;
        if (!vic[c2].count(x)) {
            vic[c2].insert(x);
            vouc[x].insert(c2);
            ans += sz[c2];
            ++between[{getp(x), c2}];
            suspicion.emplace_back(getp(x));
        } else ++cnt;
        is[{getp(x), c2}] = 1;
    }
    ans += (izn - cnt) * sz[c1];
    for (int x : in[c1]) {
        for (auto y : vouc[x]) {
            if (y == c2 || y == c1) continue;
            ++between[{c2, y}];
            is[{c2, y}] = 1;
            suspicion.emplace_back(y);
        }
    }
    p[c1] = c2;
    sz[c2] += sz[c1];
    for (int x : in[c1]) {
        in[c2].emplace_back(x);
    }
    for (int c : suspicion) {
        if (c != c2 && c != c1 && is[{getp(c2), getp(c)}] && is[{getp(c), getp(c2)}]) {
            squeeze(getp(c), getp(c2));
        }
    }

}

void add(int a, int b) {
    int c1 = getp(a);
    int c2 = getp(b);
    if (c1 == c2)return;
    // c1 --> c2
    if (!is[{c2, c1}]) {
        is[{c1, c2}] = 1;
        if (!vic[c2].count(a)) {
            ++between[{c1, c2}];
            ans += sz[c2];
            vic[c2].insert(a);
            vouc[a].insert(c2);
        }
    } else {
        squeeze(c1, c2);
    }
}


signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> m;
    init(n);
    for (int i = 0; i < m; ++i) {
        int u, v;
        cin >> u >> v;
        add(u, v);
        cout << ans << '\n';
    }
    return 0;
}
// RU_023
 
/*
4 6
1 2
2 3
3 2
1 3
3 4
4 3

4 6
3 1
4 1
2 4
2 1
1 4
1 2
(9)

*/

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 12160 KB Output is correct
2 Correct 11 ms 12160 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 11 ms 12160 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 11 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 11 ms 12160 KB Output is correct
13 Correct 11 ms 12160 KB Output is correct
14 Correct 11 ms 12160 KB Output is correct
15 Correct 11 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 13 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 12 ms 12160 KB Output is correct
26 Correct 11 ms 12160 KB Output is correct
27 Correct 11 ms 12160 KB Output is correct
28 Correct 13 ms 12160 KB Output is correct
29 Correct 11 ms 12160 KB Output is correct
30 Correct 11 ms 12160 KB Output is correct
31 Correct 12 ms 12160 KB Output is correct
32 Correct 11 ms 12160 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 12160 KB Output is correct
2 Correct 11 ms 12160 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 11 ms 12160 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 11 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 11 ms 12160 KB Output is correct
13 Correct 11 ms 12160 KB Output is correct
14 Correct 11 ms 12160 KB Output is correct
15 Correct 11 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 13 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 12 ms 12160 KB Output is correct
26 Correct 11 ms 12160 KB Output is correct
27 Correct 11 ms 12160 KB Output is correct
28 Correct 13 ms 12160 KB Output is correct
29 Correct 11 ms 12160 KB Output is correct
30 Correct 11 ms 12160 KB Output is correct
31 Correct 12 ms 12160 KB Output is correct
32 Correct 11 ms 12160 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct
34 Correct 14 ms 12288 KB Output is correct
35 Correct 102 ms 17656 KB Output is correct
36 Correct 179 ms 23032 KB Output is correct
37 Correct 172 ms 22904 KB Output is correct
38 Correct 160 ms 22136 KB Output is correct
39 Correct 17 ms 12928 KB Output is correct
40 Correct 23 ms 14080 KB Output is correct
41 Correct 25 ms 13952 KB Output is correct
42 Correct 16 ms 12928 KB Output is correct
43 Correct 17 ms 12928 KB Output is correct
44 Correct 17 ms 12928 KB Output is correct
45 Correct 15 ms 12928 KB Output is correct
46 Correct 15 ms 12928 KB Output is correct
47 Correct 24 ms 13568 KB Output is correct
48 Correct 22 ms 13568 KB Output is correct
49 Correct 36 ms 15480 KB Output is correct
50 Correct 172 ms 23160 KB Output is correct
51 Correct 25 ms 13568 KB Output is correct
52 Correct 126 ms 19448 KB Output is correct
53 Correct 34 ms 15096 KB Output is correct
54 Correct 143 ms 21232 KB Output is correct
55 Correct 25 ms 13952 KB Output is correct
56 Correct 24 ms 13952 KB Output is correct
57 Correct 25 ms 14336 KB Output is correct
58 Correct 25 ms 14336 KB Output is correct
59 Correct 24 ms 14208 KB Output is correct
60 Correct 98 ms 16504 KB Output is correct
61 Correct 23 ms 13696 KB Output is correct
62 Correct 151 ms 21752 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 12160 KB Output is correct
2 Correct 11 ms 12160 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 11 ms 12160 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 12 ms 12160 KB Output is correct
7 Correct 12 ms 12160 KB Output is correct
8 Correct 12 ms 12160 KB Output is correct
9 Correct 12 ms 12160 KB Output is correct
10 Correct 11 ms 12160 KB Output is correct
11 Correct 12 ms 12160 KB Output is correct
12 Correct 11 ms 12160 KB Output is correct
13 Correct 11 ms 12160 KB Output is correct
14 Correct 11 ms 12160 KB Output is correct
15 Correct 11 ms 12160 KB Output is correct
16 Correct 11 ms 12160 KB Output is correct
17 Correct 11 ms 12160 KB Output is correct
18 Correct 11 ms 12160 KB Output is correct
19 Correct 13 ms 12160 KB Output is correct
20 Correct 11 ms 12160 KB Output is correct
21 Correct 12 ms 12160 KB Output is correct
22 Correct 11 ms 12160 KB Output is correct
23 Correct 12 ms 12160 KB Output is correct
24 Correct 12 ms 12160 KB Output is correct
25 Correct 12 ms 12160 KB Output is correct
26 Correct 11 ms 12160 KB Output is correct
27 Correct 11 ms 12160 KB Output is correct
28 Correct 13 ms 12160 KB Output is correct
29 Correct 11 ms 12160 KB Output is correct
30 Correct 11 ms 12160 KB Output is correct
31 Correct 12 ms 12160 KB Output is correct
32 Correct 11 ms 12160 KB Output is correct
33 Correct 12 ms 12160 KB Output is correct
34 Correct 14 ms 12288 KB Output is correct
35 Correct 102 ms 17656 KB Output is correct
36 Correct 179 ms 23032 KB Output is correct
37 Correct 172 ms 22904 KB Output is correct
38 Correct 160 ms 22136 KB Output is correct
39 Correct 17 ms 12928 KB Output is correct
40 Correct 23 ms 14080 KB Output is correct
41 Correct 25 ms 13952 KB Output is correct
42 Correct 16 ms 12928 KB Output is correct
43 Correct 17 ms 12928 KB Output is correct
44 Correct 17 ms 12928 KB Output is correct
45 Correct 15 ms 12928 KB Output is correct
46 Correct 15 ms 12928 KB Output is correct
47 Correct 24 ms 13568 KB Output is correct
48 Correct 22 ms 13568 KB Output is correct
49 Correct 36 ms 15480 KB Output is correct
50 Correct 172 ms 23160 KB Output is correct
51 Correct 25 ms 13568 KB Output is correct
52 Correct 126 ms 19448 KB Output is correct
53 Correct 34 ms 15096 KB Output is correct
54 Correct 143 ms 21232 KB Output is correct
55 Correct 25 ms 13952 KB Output is correct
56 Correct 24 ms 13952 KB Output is correct
57 Correct 25 ms 14336 KB Output is correct
58 Correct 25 ms 14336 KB Output is correct
59 Correct 24 ms 14208 KB Output is correct
60 Correct 98 ms 16504 KB Output is correct
61 Correct 23 ms 13696 KB Output is correct
62 Correct 151 ms 21752 KB Output is correct
63 Correct 1382 ms 103800 KB Output is correct
64 Correct 1384 ms 103488 KB Output is correct
65 Correct 1379 ms 103416 KB Output is correct
66 Correct 450 ms 54376 KB Output is correct
67 Correct 1818 ms 126764 KB Output is correct
68 Correct 461 ms 54216 KB Output is correct
69 Correct 755 ms 50156 KB Output is correct
70 Correct 450 ms 54124 KB Output is correct
71 Correct 472 ms 54248 KB Output is correct
72 Correct 1533 ms 87016 KB Output is correct
73 Correct 1557 ms 90472 KB Output is correct
74 Correct 3068 ms 172040 KB Output is correct
75 Correct 1245 ms 64488 KB Output is correct
76 Correct 2162 ms 112624 KB Output is correct
77 Correct 2181 ms 113264 KB Output is correct
78 Correct 714 ms 64600 KB Output is correct
79 Correct 1034 ms 75456 KB Output is correct
80 Correct 722 ms 66904 KB Output is correct
81 Correct 1022 ms 72284 KB Output is correct
82 Correct 2025 ms 101748 KB Output is correct
83 Correct 2001 ms 101748 KB Output is correct
84 Correct 1789 ms 125416 KB Output is correct
85 Correct 1790 ms 125380 KB Output is correct
86 Correct 1465 ms 151368 KB Output is correct
87 Correct 1492 ms 151968 KB Output is correct
88 Correct 1566 ms 89580 KB Output is correct
89 Correct 2102 ms 107088 KB Output is correct