oj.uz

답안 #1041486

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1041486 2024-08-02T04:43:52 Z hotboy2703 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 532 ms 102228 KB 
#include<bits/stdc++.h>
using ll = long long;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL << (i))
const ll INF = 1e9;
const ll MAXN = 1e5+100;
set <ll> s[MAXN];
set <pll> rev[MAXN];
set <ll> edge[MAXN];
ll dsu[MAXN];
ll ans;
vector <pll> all;
void join(ll x,ll y){
    x = dsu[x],y = dsu[y];
    if (x==y)return;
    if (sz(s[x]) < sz(s[y]))swap(x,y);
    for (auto it = rev[x].lower_bound(MP(y,0));it != rev[x].end() && (*it).fi == y;it=rev[x].erase(it)){
        ans -= sz(s[x]);
    }
    for (auto it = rev[y].lower_bound(MP(x,0));it != rev[y].end() && (*it).fi == x;it=rev[y].erase(it)){
        ans -= sz(s[y]);
    }
    ans += sz(s[x]) * sz(s[y]) * 2;
    ans += sz(rev[x]) * sz(s[y]) + sz(rev[y]) * sz(s[x]);
    for (auto z:rev[y]){
        if (rev[x].insert(z).se == 0){
            ans -= sz(s[x]) + sz(s[y]);
        }
        edge[z.fi].erase(y);
        edge[z.fi].insert(x);
        if (edge[x].find(z.fi) != edge[x].end()){
            all.push_back(MP(x,z.fi));
        }
    }
    edge[y].erase(x);
    for (auto z:edge[y]){
        edge[x].insert(z);
        if (z!=x){
            vector <pll> tmp;
            for (auto it = rev[z].lower_bound(MP(y,0));it != rev[z].end() && (*it).fi == y;it=rev[z].erase(it)){
                tmp.push_back(MP(x,(*it).se));
            }
            for (auto z1:tmp)rev[z].insert(z1);
        }
        if (edge[z].find(x) != edge[z].end()){
            all.push_back(MP(x,z));
        }
    }
    for (auto z:s[y]){
        dsu[z] = x;
        s[x].insert(z);
    }
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(nullptr);
    ll n,m;
    cin>>n>>m;
    for (ll i = 1;i <= n;i ++){
        s[i].insert(i);
        dsu[i] = i;
    }
    for (ll j = 1;j <= m;j ++){
        ll x,y;
        cin>>x>>y;
        if (dsu[x] != dsu[y]){
            edge[dsu[x]].insert(dsu[y]);
            if (rev[dsu[y]].insert(MP(dsu[x],x)).se)ans+=sz(s[dsu[y]]);
            if (edge[dsu[y]].find(dsu[x]) != edge[dsu[y]].end()){
                all.push_back(MP(dsu[x],dsu[y]));
            }
            while (!all.empty()){
                pll u = all.back();all.pop_back();
                join(u.fi,u.se);
            }
        }
        cout<<ans<<'\n';
    }
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 2 ms 14940 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 14940 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 14936 KB Output is correct
7 Correct 3 ms 15192 KB Output is correct
8 Correct 2 ms 15196 KB Output is correct
9 Correct 2 ms 15196 KB Output is correct
10 Correct 2 ms 14940 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 2 ms 14940 KB Output is correct
13 Correct 2 ms 14940 KB Output is correct
14 Correct 3 ms 14940 KB Output is correct
15 Correct 3 ms 15168 KB Output is correct
16 Correct 2 ms 14940 KB Output is correct
17 Correct 2 ms 14940 KB Output is correct
18 Correct 2 ms 14936 KB Output is correct
19 Correct 2 ms 14940 KB Output is correct
20 Correct 2 ms 14940 KB Output is correct
21 Correct 2 ms 15196 KB Output is correct
22 Correct 2 ms 14940 KB Output is correct
23 Correct 2 ms 15204 KB Output is correct
24 Correct 2 ms 15196 KB Output is correct
25 Correct 2 ms 15196 KB Output is correct
26 Correct 2 ms 15136 KB Output is correct
27 Correct 3 ms 14940 KB Output is correct
28 Correct 2 ms 14940 KB Output is correct
29 Correct 3 ms 15192 KB Output is correct
30 Correct 2 ms 15192 KB Output is correct
31 Correct 2 ms 15192 KB Output is correct
32 Correct 2 ms 14940 KB Output is correct
33 Correct 2 ms 15196 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 2 ms 14940 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 14940 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 14936 KB Output is correct
7 Correct 3 ms 15192 KB Output is correct
8 Correct 2 ms 15196 KB Output is correct
9 Correct 2 ms 15196 KB Output is correct
10 Correct 2 ms 14940 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 2 ms 14940 KB Output is correct
13 Correct 2 ms 14940 KB Output is correct
14 Correct 3 ms 14940 KB Output is correct
15 Correct 3 ms 15168 KB Output is correct
16 Correct 2 ms 14940 KB Output is correct
17 Correct 2 ms 14940 KB Output is correct
18 Correct 2 ms 14936 KB Output is correct
19 Correct 2 ms 14940 KB Output is correct
20 Correct 2 ms 14940 KB Output is correct
21 Correct 2 ms 15196 KB Output is correct
22 Correct 2 ms 14940 KB Output is correct
23 Correct 2 ms 15204 KB Output is correct
24 Correct 2 ms 15196 KB Output is correct
25 Correct 2 ms 15196 KB Output is correct
26 Correct 2 ms 15136 KB Output is correct
27 Correct 3 ms 14940 KB Output is correct
28 Correct 2 ms 14940 KB Output is correct
29 Correct 3 ms 15192 KB Output is correct
30 Correct 2 ms 15192 KB Output is correct
31 Correct 2 ms 15192 KB Output is correct
32 Correct 2 ms 14940 KB Output is correct
33 Correct 2 ms 15196 KB Output is correct
34 Correct 3 ms 15196 KB Output is correct
35 Correct 39 ms 18544 KB Output is correct
36 Correct 56 ms 20680 KB Output is correct
37 Correct 55 ms 20720 KB Output is correct
38 Correct 50 ms 20432 KB Output is correct
39 Correct 4 ms 15396 KB Output is correct
40 Correct 5 ms 15964 KB Output is correct
41 Correct 5 ms 15964 KB Output is correct
42 Correct 3 ms 15448 KB Output is correct
43 Correct 5 ms 15448 KB Output is correct
44 Correct 4 ms 15452 KB Output is correct
45 Correct 3 ms 15452 KB Output is correct
46 Correct 3 ms 15452 KB Output is correct
47 Correct 4 ms 15768 KB Output is correct
48 Correct 4 ms 15800 KB Output is correct
49 Correct 7 ms 16052 KB Output is correct
50 Correct 53 ms 20816 KB Output is correct
51 Correct 5 ms 15708 KB Output is correct
52 Correct 43 ms 19324 KB Output is correct
53 Correct 7 ms 15960 KB Output is correct
54 Correct 49 ms 19964 KB Output is correct
55 Correct 5 ms 15708 KB Output is correct
56 Correct 4 ms 15708 KB Output is correct
57 Correct 4 ms 15708 KB Output is correct
58 Correct 4 ms 15708 KB Output is correct
59 Correct 6 ms 16220 KB Output is correct
60 Correct 39 ms 18536 KB Output is correct
61 Correct 6 ms 15704 KB Output is correct
62 Correct 52 ms 20172 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 2 ms 14940 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 14940 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 14936 KB Output is correct
7 Correct 3 ms 15192 KB Output is correct
8 Correct 2 ms 15196 KB Output is correct
9 Correct 2 ms 15196 KB Output is correct
10 Correct 2 ms 14940 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 2 ms 14940 KB Output is correct
13 Correct 2 ms 14940 KB Output is correct
14 Correct 3 ms 14940 KB Output is correct
15 Correct 3 ms 15168 KB Output is correct
16 Correct 2 ms 14940 KB Output is correct
17 Correct 2 ms 14940 KB Output is correct
18 Correct 2 ms 14936 KB Output is correct
19 Correct 2 ms 14940 KB Output is correct
20 Correct 2 ms 14940 KB Output is correct
21 Correct 2 ms 15196 KB Output is correct
22 Correct 2 ms 14940 KB Output is correct
23 Correct 2 ms 15204 KB Output is correct
24 Correct 2 ms 15196 KB Output is correct
25 Correct 2 ms 15196 KB Output is correct
26 Correct 2 ms 15136 KB Output is correct
27 Correct 3 ms 14940 KB Output is correct
28 Correct 2 ms 14940 KB Output is correct
29 Correct 3 ms 15192 KB Output is correct
30 Correct 2 ms 15192 KB Output is correct
31 Correct 2 ms 15192 KB Output is correct
32 Correct 2 ms 14940 KB Output is correct
33 Correct 2 ms 15196 KB Output is correct
34 Correct 3 ms 15196 KB Output is correct
35 Correct 39 ms 18544 KB Output is correct
36 Correct 56 ms 20680 KB Output is correct
37 Correct 55 ms 20720 KB Output is correct
38 Correct 50 ms 20432 KB Output is correct
39 Correct 4 ms 15396 KB Output is correct
40 Correct 5 ms 15964 KB Output is correct
41 Correct 5 ms 15964 KB Output is correct
42 Correct 3 ms 15448 KB Output is correct
43 Correct 5 ms 15448 KB Output is correct
44 Correct 4 ms 15452 KB Output is correct
45 Correct 3 ms 15452 KB Output is correct
46 Correct 3 ms 15452 KB Output is correct
47 Correct 4 ms 15768 KB Output is correct
48 Correct 4 ms 15800 KB Output is correct
49 Correct 7 ms 16052 KB Output is correct
50 Correct 53 ms 20816 KB Output is correct
51 Correct 5 ms 15708 KB Output is correct
52 Correct 43 ms 19324 KB Output is correct
53 Correct 7 ms 15960 KB Output is correct
54 Correct 49 ms 19964 KB Output is correct
55 Correct 5 ms 15708 KB Output is correct
56 Correct 4 ms 15708 KB Output is correct
57 Correct 4 ms 15708 KB Output is correct
58 Correct 4 ms 15708 KB Output is correct
59 Correct 6 ms 16220 KB Output is correct
60 Correct 39 ms 18536 KB Output is correct
61 Correct 6 ms 15704 KB Output is correct
62 Correct 52 ms 20172 KB Output is correct
63 Correct 203 ms 54812 KB Output is correct
64 Correct 203 ms 54864 KB Output is correct
65 Correct 189 ms 54864 KB Output is correct
66 Correct 97 ms 31316 KB Output is correct
67 Correct 332 ms 83536 KB Output is correct
68 Correct 106 ms 33620 KB Output is correct
69 Correct 178 ms 34552 KB Output is correct
70 Correct 105 ms 33876 KB Output is correct
71 Correct 99 ms 33620 KB Output is correct
72 Correct 251 ms 52540 KB Output is correct
73 Correct 261 ms 55920 KB Output is correct
74 Correct 532 ms 70220 KB Output is correct
75 Correct 276 ms 39748 KB Output is correct
76 Correct 350 ms 53208 KB Output is correct
77 Correct 353 ms 53328 KB Output is correct
78 Correct 95 ms 34900 KB Output is correct
79 Correct 170 ms 39896 KB Output is correct
80 Correct 104 ms 34644 KB Output is correct
81 Correct 187 ms 38676 KB Output is correct
82 Correct 283 ms 47812 KB Output is correct
83 Correct 284 ms 47700 KB Output is correct
84 Correct 258 ms 47188 KB Output is correct
85 Correct 270 ms 47140 KB Output is correct
86 Correct 319 ms 100156 KB Output is correct
87 Correct 312 ms 102228 KB Output is correct
88 Correct 273 ms 54168 KB Output is correct
89 Correct 308 ms 51720 KB Output is correct