oj.uz

Submission #784251

# Submission time Handle Problem Language Result Execution time Memory
784251 2023-07-15T22:21:51 Z Seb Bridges (APIO19_bridges) C++17
100 / 100
 2574 ms 14036 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;

#define f first
#define s second

const ll MAXN = 1e5 + 5;
const ll sq = 1000;

ll u[MAXN],v[MAXN],d[MAXN],t[MAXN],s[MAXN],w[MAXN],pa[MAXN],ans[MAXN],sz[MAXN],sus[MAXN];
priority_queue <pair<ll,ll>> pq,pq2;
vector <ll> roll,vec;
bool vis[MAXN];

ll padre(ll a) {
    if (sz[a] == 0) {
        sz[a] = 1;
        pa[a] = a;
    }
    if (pa[a] == a) return a;
    return padre(pa[a]);
}

void unir(ll a, ll b) {
    a = padre(a);
    b = padre(b);
    if (a == b) return;
    if (sz[a] < sz[b]) swap(a,b);
    sz[a] += sz[b];
    pa[b] = a;
    roll.push_back(b);
    return;
}

void rollback(ll pausa) {
    while (roll.size() != pausa) {
        ll aux = roll.back();
        roll.pop_back();
        sz[pa[aux]] -= sz[aux];
        pa[aux] = aux;
    }
    return;
}

int main() {
ios_base::sync_with_stdio(0);cin.tie(0);
roll.push_back(0);
ll n,m,q;
cin>>n>>m;
for (int i=0;i<m;i++) cin>>u[i]>>v[i]>>d[i];
cin>>q;
for (int i=0;i<q;i++) cin>>t[i]>>s[i]>>w[i];
for (int l=0;l<q;l+=sq) {
    int r = min(l+sq-1,q-1);
    for (int i=l;i<=r;i++) {
        if (t[i]==2) pq2.push({w[i],i});
        else {
            vis[s[i]-1] = true;
            vec.push_back(s[i]-1);
        }
    }
    for (int i=0;i<m;i++) if (vis[i] == false) pq.push({d[i],i});
    while (!pq2.empty()) {
        pair<ll,ll> p = pq2.top();
        pq2.pop();
        while (!pq.empty() && pq.top().f >= p.f) {
            unir(u[pq.top().s],v[pq.top().s]);
            pq.pop();
        }
        int pau = roll.size();
        for (int i=l;i<=p.s;i++) if (t[i]==1) {
            sus[s[i]-1] = w[i];
        }
        for (int i=0;i<vec.size();i++) {
            if (sus[vec[i]]==0) {
                if (d[vec[i]] >= p.f) unir(u[vec[i]],v[vec[i]]);
            }
            else {
                if (sus[vec[i]] >= p.f) unir(u[vec[i]],v[vec[i]]);
            }
        }
        for (int i=l;i<=p.s;i++) if (t[i]==1) sus[s[i]-1] = 0;
        ans[p.s] = sz[padre(s[p.s])];
        rollback(pau);
    }
    for (int i=l;i<=r;i++) if (t[i]==1) d[s[i]-1] = w[i];
    while (!pq.empty()) pq.pop();
    while (!pq2.empty()) pq2.pop();
    rollback(1);
    for (int i=0;i<m;i++) {
        vis[i] = false;
        sus[i] = 0;
    }
    vec.clear();
}
for (int i=0;i<q;i++) if (ans[i]!=0) cout<<ans[i]<<"\n";
return 0;
}

Compilation message

bridges.cpp: In function 'void rollback(ll)':
bridges.cpp:42:24: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   42 |     while (roll.size() != pausa) {
      |            ~~~~~~~~~~~~^~~~~~~~
bridges.cpp: In function 'int main()':
bridges.cpp:80:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |         for (int i=0;i<vec.size();i++) {
      |                      ~^~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 376 KB Output is correct
3 Correct 33 ms 748 KB Output is correct
4 Correct 11 ms 696 KB Output is correct
5 Correct 37 ms 696 KB Output is correct
6 Correct 30 ms 688 KB Output is correct
7 Correct 34 ms 924 KB Output is correct
8 Correct 37 ms 676 KB Output is correct
9 Correct 43 ms 696 KB Output is correct
10 Correct 37 ms 664 KB Output is correct
11 Correct 37 ms 712 KB Output is correct
12 Correct 52 ms 668 KB Output is correct
13 Correct 42 ms 700 KB Output is correct
14 Correct 40 ms 680 KB Output is correct
15 Correct 46 ms 692 KB Output is correct
16 Correct 34 ms 716 KB Output is correct
17 Correct 34 ms 700 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1182 ms 7740 KB Output is correct
2 Correct 1242 ms 7620 KB Output is correct
3 Correct 1234 ms 7640 KB Output is correct
4 Correct 1279 ms 7624 KB Output is correct
5 Correct 1305 ms 7684 KB Output is correct
6 Correct 1536 ms 7764 KB Output is correct
7 Correct 1505 ms 7832 KB Output is correct
8 Correct 1541 ms 7812 KB Output is correct
9 Correct 113 ms 3608 KB Output is correct
10 Correct 986 ms 7724 KB Output is correct
11 Correct 981 ms 7636 KB Output is correct
12 Correct 1116 ms 8084 KB Output is correct
13 Correct 1060 ms 7532 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 864 ms 6152 KB Output is correct
2 Correct 482 ms 4296 KB Output is correct
3 Correct 975 ms 6420 KB Output is correct
4 Correct 848 ms 6164 KB Output is correct
5 Correct 107 ms 3632 KB Output is correct
6 Correct 956 ms 6244 KB Output is correct
7 Correct 820 ms 6168 KB Output is correct
8 Correct 795 ms 6172 KB Output is correct
9 Correct 729 ms 6424 KB Output is correct
10 Correct 666 ms 6324 KB Output is correct
11 Correct 652 ms 6136 KB Output is correct
12 Correct 629 ms 6084 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1944 ms 10368 KB Output is correct
2 Correct 109 ms 4788 KB Output is correct
3 Correct 189 ms 6768 KB Output is correct
4 Correct 140 ms 6732 KB Output is correct
5 Correct 1654 ms 11540 KB Output is correct
6 Correct 1971 ms 11480 KB Output is correct
7 Correct 1682 ms 11608 KB Output is correct
8 Correct 910 ms 8976 KB Output is correct
9 Correct 922 ms 8960 KB Output is correct
10 Correct 930 ms 9072 KB Output is correct
11 Correct 1465 ms 10172 KB Output is correct
12 Correct 1409 ms 10172 KB Output is correct
13 Correct 1418 ms 10324 KB Output is correct
14 Correct 1624 ms 11724 KB Output is correct
15 Correct 1629 ms 11508 KB Output is correct
16 Correct 1970 ms 11484 KB Output is correct
17 Correct 1986 ms 11468 KB Output is correct
18 Correct 1927 ms 11404 KB Output is correct
19 Correct 1942 ms 11484 KB Output is correct
20 Correct 1634 ms 10824 KB Output is correct
21 Correct 1617 ms 10860 KB Output is correct
22 Correct 1893 ms 11356 KB Output is correct
23 Correct 1625 ms 10540 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1182 ms 7740 KB Output is correct
2 Correct 1242 ms 7620 KB Output is correct
3 Correct 1234 ms 7640 KB Output is correct
4 Correct 1279 ms 7624 KB Output is correct
5 Correct 1305 ms 7684 KB Output is correct
6 Correct 1536 ms 7764 KB Output is correct
7 Correct 1505 ms 7832 KB Output is correct
8 Correct 1541 ms 7812 KB Output is correct
9 Correct 113 ms 3608 KB Output is correct
10 Correct 986 ms 7724 KB Output is correct
11 Correct 981 ms 7636 KB Output is correct
12 Correct 1116 ms 8084 KB Output is correct
13 Correct 1060 ms 7532 KB Output is correct
14 Correct 864 ms 6152 KB Output is correct
15 Correct 482 ms 4296 KB Output is correct
16 Correct 975 ms 6420 KB Output is correct
17 Correct 848 ms 6164 KB Output is correct
18 Correct 107 ms 3632 KB Output is correct
19 Correct 956 ms 6244 KB Output is correct
20 Correct 820 ms 6168 KB Output is correct
21 Correct 795 ms 6172 KB Output is correct
22 Correct 729 ms 6424 KB Output is correct
23 Correct 666 ms 6324 KB Output is correct
24 Correct 652 ms 6136 KB Output is correct
25 Correct 629 ms 6084 KB Output is correct
26 Correct 1206 ms 7772 KB Output is correct
27 Correct 1410 ms 7748 KB Output is correct
28 Correct 1320 ms 7700 KB Output is correct
29 Correct 1101 ms 7616 KB Output is correct
30 Correct 1460 ms 7920 KB Output is correct
31 Correct 1440 ms 7720 KB Output is correct
32 Correct 1538 ms 7856 KB Output is correct
33 Correct 1277 ms 7632 KB Output is correct
34 Correct 1321 ms 7688 KB Output is correct
35 Correct 1289 ms 7628 KB Output is correct
36 Correct 1150 ms 7604 KB Output is correct
37 Correct 1147 ms 7592 KB Output is correct
38 Correct 1116 ms 7636 KB Output is correct
39 Correct 985 ms 7728 KB Output is correct
40 Correct 980 ms 7728 KB Output is correct
41 Correct 997 ms 7760 KB Output is correct
42 Correct 920 ms 7612 KB Output is correct
43 Correct 902 ms 7552 KB Output is correct
44 Correct 887 ms 7504 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 376 KB Output is correct
3 Correct 33 ms 748 KB Output is correct
4 Correct 11 ms 696 KB Output is correct
5 Correct 37 ms 696 KB Output is correct
6 Correct 30 ms 688 KB Output is correct
7 Correct 34 ms 924 KB Output is correct
8 Correct 37 ms 676 KB Output is correct
9 Correct 43 ms 696 KB Output is correct
10 Correct 37 ms 664 KB Output is correct
11 Correct 37 ms 712 KB Output is correct
12 Correct 52 ms 668 KB Output is correct
13 Correct 42 ms 700 KB Output is correct
14 Correct 40 ms 680 KB Output is correct
15 Correct 46 ms 692 KB Output is correct
16 Correct 34 ms 716 KB Output is correct
17 Correct 34 ms 700 KB Output is correct
18 Correct 1182 ms 7740 KB Output is correct
19 Correct 1242 ms 7620 KB Output is correct
20 Correct 1234 ms 7640 KB Output is correct
21 Correct 1279 ms 7624 KB Output is correct
22 Correct 1305 ms 7684 KB Output is correct
23 Correct 1536 ms 7764 KB Output is correct
24 Correct 1505 ms 7832 KB Output is correct
25 Correct 1541 ms 7812 KB Output is correct
26 Correct 113 ms 3608 KB Output is correct
27 Correct 986 ms 7724 KB Output is correct
28 Correct 981 ms 7636 KB Output is correct
29 Correct 1116 ms 8084 KB Output is correct
30 Correct 1060 ms 7532 KB Output is correct
31 Correct 864 ms 6152 KB Output is correct
32 Correct 482 ms 4296 KB Output is correct
33 Correct 975 ms 6420 KB Output is correct
34 Correct 848 ms 6164 KB Output is correct
35 Correct 107 ms 3632 KB Output is correct
36 Correct 956 ms 6244 KB Output is correct
37 Correct 820 ms 6168 KB Output is correct
38 Correct 795 ms 6172 KB Output is correct
39 Correct 729 ms 6424 KB Output is correct
40 Correct 666 ms 6324 KB Output is correct
41 Correct 652 ms 6136 KB Output is correct
42 Correct 629 ms 6084 KB Output is correct
43 Correct 1944 ms 10368 KB Output is correct
44 Correct 109 ms 4788 KB Output is correct
45 Correct 189 ms 6768 KB Output is correct
46 Correct 140 ms 6732 KB Output is correct
47 Correct 1654 ms 11540 KB Output is correct
48 Correct 1971 ms 11480 KB Output is correct
49 Correct 1682 ms 11608 KB Output is correct
50 Correct 910 ms 8976 KB Output is correct
51 Correct 922 ms 8960 KB Output is correct
52 Correct 930 ms 9072 KB Output is correct
53 Correct 1465 ms 10172 KB Output is correct
54 Correct 1409 ms 10172 KB Output is correct
55 Correct 1418 ms 10324 KB Output is correct
56 Correct 1624 ms 11724 KB Output is correct
57 Correct 1629 ms 11508 KB Output is correct
58 Correct 1970 ms 11484 KB Output is correct
59 Correct 1986 ms 11468 KB Output is correct
60 Correct 1927 ms 11404 KB Output is correct
61 Correct 1942 ms 11484 KB Output is correct
62 Correct 1634 ms 10824 KB Output is correct
63 Correct 1617 ms 10860 KB Output is correct
64 Correct 1893 ms 11356 KB Output is correct
65 Correct 1625 ms 10540 KB Output is correct
66 Correct 1206 ms 7772 KB Output is correct
67 Correct 1410 ms 7748 KB Output is correct
68 Correct 1320 ms 7700 KB Output is correct
69 Correct 1101 ms 7616 KB Output is correct
70 Correct 1460 ms 7920 KB Output is correct
71 Correct 1440 ms 7720 KB Output is correct
72 Correct 1538 ms 7856 KB Output is correct
73 Correct 1277 ms 7632 KB Output is correct
74 Correct 1321 ms 7688 KB Output is correct
75 Correct 1289 ms 7628 KB Output is correct
76 Correct 1150 ms 7604 KB Output is correct
77 Correct 1147 ms 7592 KB Output is correct
78 Correct 1116 ms 7636 KB Output is correct
79 Correct 985 ms 7728 KB Output is correct
80 Correct 980 ms 7728 KB Output is correct
81 Correct 997 ms 7760 KB Output is correct
82 Correct 920 ms 7612 KB Output is correct
83 Correct 902 ms 7552 KB Output is correct
84 Correct 887 ms 7504 KB Output is correct
85 Correct 2504 ms 14036 KB Output is correct
86 Correct 227 ms 7464 KB Output is correct
87 Correct 170 ms 7564 KB Output is correct
88 Correct 1939 ms 12356 KB Output is correct
89 Correct 2502 ms 14020 KB Output is correct
90 Correct 1921 ms 12552 KB Output is correct
91 Correct 1365 ms 10356 KB Output is correct
92 Correct 1304 ms 10568 KB Output is correct
93 Correct 1664 ms 10540 KB Output is correct
94 Correct 1992 ms 11956 KB Output is correct
95 Correct 1926 ms 12228 KB Output is correct
96 Correct 2195 ms 12128 KB Output is correct
97 Correct 1750 ms 12708 KB Output is correct
98 Correct 1730 ms 12244 KB Output is correct
99 Correct 2513 ms 13968 KB Output is correct
100 Correct 2479 ms 13816 KB Output is correct
101 Correct 2496 ms 13892 KB Output is correct
102 Correct 2574 ms 13952 KB Output is correct
103 Correct 2408 ms 12696 KB Output is correct
104 Correct 2417 ms 12804 KB Output is correct
105 Correct 1908 ms 12492 KB Output is correct
106 Correct 1572 ms 11972 KB Output is correct
107 Correct 1849 ms 12784 KB Output is correct
108 Correct 2525 ms 13540 KB Output is correct
109 Correct 2126 ms 11356 KB Output is correct