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답안 #211935

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
211935 2020-03-21T18:56:41 Z 3zp 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++14
100 / 100
 1707 ms 101608 KB 
#include<bits/stdc++.h>
#define ll long long
using namespace std;
unordered_map<ll,ll> f[300009];
unordered_map<ll,ll> g[300009];
ll p[300009],s[300009];
int br[309][309];
ll ans;
ll P(ll x){
    if(x == p[x]) return x;
    p[x] = P(p[x]);
    return p[x];
}
void un(ll x, ll y){
    x = P(x); y = P(y);
    if(x == y ) return;
    if(f[x].size() + g[x].size() >
       f[y].size() + g[y].size()) swap(x, y);
    ans -= s[x] * (ll)f[x].size() - s[x];
    ans -= s[y] * (ll)f[y].size() - s[y];
    s[y] += s[x];
    p[x] = y;
    vector<int> v;
    for(auto it = f[x].begin(); it != f[x].end(); it++){
        f[y][it->first]=1;
        int u = P(it->first);
        if(g[y].find(u) != g[y].end()) 
          v.push_back(it->first);
        g[u][y] = 1;
        if(g[u].find(x) != g[u].end()) 
          g[u].erase(g[u].find(x));
    }
    for(auto it = g[x].begin(); it != g[x].end(); it++){
        g[y][it->first] = 1;
        if(g[it->first].find(y) != g[it->first].end())
          v.push_back(it->first);
    }
    ans += s[y] * (ll)f[y].size() - s[y];
    for(int u : v)
        un(y, u);
}
main(){
    ll n, q;
    cin >> n >> q;
    for(ll i = 1; i <= n; i++)
        s[i] = 1, p[i] = i, f[i][i] = 1;
    while(q--){
        ll a=0, b=0;
        cin >> a >> b;
        ll c = P(b), d = P(a);
        if(f[c].find(a) == f[c].end()){
            if(g[c].find(d) != g[c].end()) un(a, b);
            else{
                f[c][a] = 1,
                ans += s[c];
            }
            g[P(a)][c] = 1;

        }
        cout<<ans<<endl;
    }
}

Compilation message

joitter2.cpp:42:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 33152 KB Output is correct
2 Correct 25 ms 33152 KB Output is correct
3 Correct 25 ms 33280 KB Output is correct
4 Correct 25 ms 33152 KB Output is correct
5 Correct 27 ms 33408 KB Output is correct
6 Correct 26 ms 33152 KB Output is correct
7 Correct 33 ms 33228 KB Output is correct
8 Correct 31 ms 33280 KB Output is correct
9 Correct 32 ms 33280 KB Output is correct
10 Correct 26 ms 33152 KB Output is correct
11 Correct 26 ms 33280 KB Output is correct
12 Correct 26 ms 33152 KB Output is correct
13 Correct 25 ms 33152 KB Output is correct
14 Correct 25 ms 33152 KB Output is correct
15 Correct 25 ms 33152 KB Output is correct
16 Correct 26 ms 33152 KB Output is correct
17 Correct 27 ms 33272 KB Output is correct
18 Correct 26 ms 33280 KB Output is correct
19 Correct 26 ms 33280 KB Output is correct
20 Correct 28 ms 33400 KB Output is correct
21 Correct 31 ms 33280 KB Output is correct
22 Correct 26 ms 33280 KB Output is correct
23 Correct 28 ms 33280 KB Output is correct
24 Correct 27 ms 33280 KB Output is correct
25 Correct 31 ms 33280 KB Output is correct
26 Correct 27 ms 33272 KB Output is correct
27 Correct 30 ms 33280 KB Output is correct
28 Correct 25 ms 33280 KB Output is correct
29 Correct 26 ms 33280 KB Output is correct
30 Correct 25 ms 33280 KB Output is correct
31 Correct 31 ms 33280 KB Output is correct
32 Correct 25 ms 33152 KB Output is correct
33 Correct 31 ms 33280 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 33152 KB Output is correct
2 Correct 25 ms 33152 KB Output is correct
3 Correct 25 ms 33280 KB Output is correct
4 Correct 25 ms 33152 KB Output is correct
5 Correct 27 ms 33408 KB Output is correct
6 Correct 26 ms 33152 KB Output is correct
7 Correct 33 ms 33228 KB Output is correct
8 Correct 31 ms 33280 KB Output is correct
9 Correct 32 ms 33280 KB Output is correct
10 Correct 26 ms 33152 KB Output is correct
11 Correct 26 ms 33280 KB Output is correct
12 Correct 26 ms 33152 KB Output is correct
13 Correct 25 ms 33152 KB Output is correct
14 Correct 25 ms 33152 KB Output is correct
15 Correct 25 ms 33152 KB Output is correct
16 Correct 26 ms 33152 KB Output is correct
17 Correct 27 ms 33272 KB Output is correct
18 Correct 26 ms 33280 KB Output is correct
19 Correct 26 ms 33280 KB Output is correct
20 Correct 28 ms 33400 KB Output is correct
21 Correct 31 ms 33280 KB Output is correct
22 Correct 26 ms 33280 KB Output is correct
23 Correct 28 ms 33280 KB Output is correct
24 Correct 27 ms 33280 KB Output is correct
25 Correct 31 ms 33280 KB Output is correct
26 Correct 27 ms 33272 KB Output is correct
27 Correct 30 ms 33280 KB Output is correct
28 Correct 25 ms 33280 KB Output is correct
29 Correct 26 ms 33280 KB Output is correct
30 Correct 25 ms 33280 KB Output is correct
31 Correct 31 ms 33280 KB Output is correct
32 Correct 25 ms 33152 KB Output is correct
33 Correct 31 ms 33280 KB Output is correct
34 Correct 53 ms 33280 KB Output is correct
35 Correct 881 ms 36576 KB Output is correct
36 Correct 888 ms 38392 KB Output is correct
37 Correct 858 ms 38520 KB Output is correct
38 Correct 843 ms 38396 KB Output is correct
39 Correct 37 ms 33536 KB Output is correct
40 Correct 41 ms 34176 KB Output is correct
41 Correct 43 ms 34168 KB Output is correct
42 Correct 37 ms 33536 KB Output is correct
43 Correct 39 ms 33664 KB Output is correct
44 Correct 38 ms 33656 KB Output is correct
45 Correct 38 ms 33528 KB Output is correct
46 Correct 38 ms 33528 KB Output is correct
47 Correct 40 ms 33912 KB Output is correct
48 Correct 41 ms 33920 KB Output is correct
49 Correct 59 ms 34424 KB Output is correct
50 Correct 844 ms 38672 KB Output is correct
51 Correct 58 ms 33784 KB Output is correct
52 Correct 849 ms 37496 KB Output is correct
53 Correct 58 ms 34296 KB Output is correct
54 Correct 831 ms 38024 KB Output is correct
55 Correct 43 ms 33912 KB Output is correct
56 Correct 41 ms 33912 KB Output is correct
57 Correct 40 ms 34168 KB Output is correct
58 Correct 42 ms 34176 KB Output is correct
59 Correct 43 ms 34172 KB Output is correct
60 Correct 827 ms 36844 KB Output is correct
61 Correct 42 ms 33912 KB Output is correct
62 Correct 838 ms 38240 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 33152 KB Output is correct
2 Correct 25 ms 33152 KB Output is correct
3 Correct 25 ms 33280 KB Output is correct
4 Correct 25 ms 33152 KB Output is correct
5 Correct 27 ms 33408 KB Output is correct
6 Correct 26 ms 33152 KB Output is correct
7 Correct 33 ms 33228 KB Output is correct
8 Correct 31 ms 33280 KB Output is correct
9 Correct 32 ms 33280 KB Output is correct
10 Correct 26 ms 33152 KB Output is correct
11 Correct 26 ms 33280 KB Output is correct
12 Correct 26 ms 33152 KB Output is correct
13 Correct 25 ms 33152 KB Output is correct
14 Correct 25 ms 33152 KB Output is correct
15 Correct 25 ms 33152 KB Output is correct
16 Correct 26 ms 33152 KB Output is correct
17 Correct 27 ms 33272 KB Output is correct
18 Correct 26 ms 33280 KB Output is correct
19 Correct 26 ms 33280 KB Output is correct
20 Correct 28 ms 33400 KB Output is correct
21 Correct 31 ms 33280 KB Output is correct
22 Correct 26 ms 33280 KB Output is correct
23 Correct 28 ms 33280 KB Output is correct
24 Correct 27 ms 33280 KB Output is correct
25 Correct 31 ms 33280 KB Output is correct
26 Correct 27 ms 33272 KB Output is correct
27 Correct 30 ms 33280 KB Output is correct
28 Correct 25 ms 33280 KB Output is correct
29 Correct 26 ms 33280 KB Output is correct
30 Correct 25 ms 33280 KB Output is correct
31 Correct 31 ms 33280 KB Output is correct
32 Correct 25 ms 33152 KB Output is correct
33 Correct 31 ms 33280 KB Output is correct
34 Correct 53 ms 33280 KB Output is correct
35 Correct 881 ms 36576 KB Output is correct
36 Correct 888 ms 38392 KB Output is correct
37 Correct 858 ms 38520 KB Output is correct
38 Correct 843 ms 38396 KB Output is correct
39 Correct 37 ms 33536 KB Output is correct
40 Correct 41 ms 34176 KB Output is correct
41 Correct 43 ms 34168 KB Output is correct
42 Correct 37 ms 33536 KB Output is correct
43 Correct 39 ms 33664 KB Output is correct
44 Correct 38 ms 33656 KB Output is correct
45 Correct 38 ms 33528 KB Output is correct
46 Correct 38 ms 33528 KB Output is correct
47 Correct 40 ms 33912 KB Output is correct
48 Correct 41 ms 33920 KB Output is correct
49 Correct 59 ms 34424 KB Output is correct
50 Correct 844 ms 38672 KB Output is correct
51 Correct 58 ms 33784 KB Output is correct
52 Correct 849 ms 37496 KB Output is correct
53 Correct 58 ms 34296 KB Output is correct
54 Correct 831 ms 38024 KB Output is correct
55 Correct 43 ms 33912 KB Output is correct
56 Correct 41 ms 33912 KB Output is correct
57 Correct 40 ms 34168 KB Output is correct
58 Correct 42 ms 34176 KB Output is correct
59 Correct 43 ms 34172 KB Output is correct
60 Correct 827 ms 36844 KB Output is correct
61 Correct 42 ms 33912 KB Output is correct
62 Correct 838 ms 38240 KB Output is correct
63 Correct 1292 ms 70264 KB Output is correct
64 Correct 1277 ms 70392 KB Output is correct
65 Correct 1342 ms 70324 KB Output is correct
66 Correct 744 ms 50312 KB Output is correct
67 Correct 1264 ms 92088 KB Output is correct
68 Correct 717 ms 50592 KB Output is correct
69 Correct 800 ms 53956 KB Output is correct
70 Correct 750 ms 50224 KB Output is correct
71 Correct 773 ms 50312 KB Output is correct
72 Correct 1110 ms 68920 KB Output is correct
73 Correct 1083 ms 71192 KB Output is correct
74 Correct 1707 ms 85908 KB Output is correct
75 Correct 1184 ms 58808 KB Output is correct
76 Correct 1453 ms 71116 KB Output is correct
77 Correct 1419 ms 71208 KB Output is correct
78 Correct 614 ms 54152 KB Output is correct
79 Correct 1149 ms 59400 KB Output is correct
80 Correct 610 ms 55812 KB Output is correct
81 Correct 1108 ms 60040 KB Output is correct
82 Correct 1081 ms 65968 KB Output is correct
83 Correct 1065 ms 65908 KB Output is correct
84 Correct 1032 ms 82188 KB Output is correct
85 Correct 1079 ms 82368 KB Output is correct
86 Correct 1179 ms 100584 KB Output is correct
87 Correct 1424 ms 101608 KB Output is correct
88 Correct 1090 ms 70204 KB Output is correct
89 Correct 1429 ms 69572 KB Output is correct