oj.uz

Submission #633016

# Submission time Handle Problem Language Result Execution time Memory
633016 2022-08-21T12:06:39 Z erto Bridges (APIO19_bridges) C++17
100 / 100
 2463 ms 149172 KB 
#include <bits/stdc++.h>
typedef long long int ll;
#define INF 1000000007
#define INF2 998244353
#define N (int)(1e5+ 5)
using namespace std;
//#define int ll
#define lsb(x) (x & (-x))
 
const int K = 1000;
int n, m,  cur=0, g, h, q;
int u[N], v[N], d[N];
int t[N], x[N], y[N], ans[N];
bool used[N];
vector<int> lis[N];

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

int get(int x){
    while(x != p[x])x = p[x];
    return x;
}

void unite(int x, int y){
    int a = get(x), b = get(y);
    if(a == b)return;
    if(sz[a] < sz[b]){
        swap(a, b);
    }
    p[b] = a;
    sz[a] += sz[b];
    tb.push_back(b);
}

void revert(int x){
    while(tb.size() > x){
        int t = tb.back();
        sz[p[t]] -= sz[t];
        p[t] = t;
        tb.pop_back();
    }
}

bool c1(int x, int y){
    return d[x] > d[y];
}

bool c2(int a, int b){
    return y[a] > y[b];
}

void solve(){
    cin >> n >> m;
    for(int i=1; i<=m; i++){
        cin >> u[i] >> v[i] >> d[i];
    }

    cin >> q;
    for(int i=1; i<=q; i++){
        cin >> t[i] >> x[i] >> y[i];
    }

    for(int i=0; i<= q / K; i++){
        int l = max(1, i * K), r = min((i + 1) * K, q + 1);
        memset(used, 0, m + 1);
        fill(sz + 1, sz + n + 1, 1);
        iota(p + 1, p + n + 1, 1);

        vector<int> ch, ask, uch;
        for(int j=l; j<r; j++){
            if(t[j] == 1){
                used[x[j]] = 1;
                ch.push_back(j);
            }
            else{
                ask.push_back(j);
            }
        }

        for(int j=l; j<r; j++){
            if(t[j] == 2){
                for(int u : ch){
                    if(d[x[u]] >= y[j]){
                      lis[j].push_back(x[u]);
                    }
                }
            }
            else{
                d[x[j]] = y[j];
            }
        }

        for(int j=1; j<=m; j++){
            if(!used[j])uch.push_back(j);
        }
        sort(uch.begin(), uch.end(), c1);
        sort(ask.begin(), ask.end(), c2);

        int p1 = 0;
        for(int j : ask){
            while(p1 < uch.size() && y[j] <= d[uch[p1]]){
                unite(u[uch[p1]], v[uch[p1]]);
                p1++;
            }
            int prev = tb.size();
            for(int l : lis[j]){
                unite(u[l], v[l]);
            }
            ans[j] = sz[get(x[j])];
            revert(prev);
        }
    }
    for(int i=1; i<=q; i++){
        if(t[i] == 2)cout << ans[i] << '\n';
    }
}
 
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int T = 1;
    //cin>>T;
    while (T--){
        solve();
    }
}

Compilation message

bridges.cpp: In function 'void revert(int)':
bridges.cpp:37:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   37 |     while(tb.size() > x){
      |           ~~~~~~~~~~^~~
bridges.cpp: In function 'void solve()':
bridges.cpp:102:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |             while(p1 < uch.size() && y[j] <= d[uch[p1]]){
      |                   ~~~^~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 38 ms 9468 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 38 ms 10200 KB Output is correct
6 Correct 30 ms 10424 KB Output is correct
7 Correct 35 ms 10960 KB Output is correct
8 Correct 38 ms 8908 KB Output is correct
9 Correct 47 ms 14828 KB Output is correct
10 Correct 39 ms 9676 KB Output is correct
11 Correct 39 ms 9496 KB Output is correct
12 Correct 47 ms 11980 KB Output is correct
13 Correct 45 ms 10076 KB Output is correct
14 Correct 41 ms 9332 KB Output is correct
15 Correct 47 ms 10116 KB Output is correct
16 Correct 43 ms 12940 KB Output is correct
17 Correct 42 ms 12064 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1388 ms 95556 KB Output is correct
2 Correct 1424 ms 95268 KB Output is correct
3 Correct 1475 ms 95508 KB Output is correct
4 Correct 1464 ms 95264 KB Output is correct
5 Correct 1457 ms 95688 KB Output is correct
6 Correct 2078 ms 149172 KB Output is correct
7 Correct 2106 ms 147092 KB Output is correct
8 Correct 2107 ms 147196 KB Output is correct
9 Correct 35 ms 4436 KB Output is correct
10 Correct 1180 ms 118428 KB Output is correct
11 Correct 1140 ms 117412 KB Output is correct
12 Correct 1345 ms 78056 KB Output is correct
13 Correct 1464 ms 72872 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1155 ms 85332 KB Output is correct
2 Correct 792 ms 101220 KB Output is correct
3 Correct 1345 ms 113440 KB Output is correct
4 Correct 1113 ms 84924 KB Output is correct
5 Correct 35 ms 4396 KB Output is correct
6 Correct 1217 ms 104632 KB Output is correct
7 Correct 1022 ms 76792 KB Output is correct
8 Correct 943 ms 60968 KB Output is correct
9 Correct 774 ms 53076 KB Output is correct
10 Correct 691 ms 41440 KB Output is correct
11 Correct 792 ms 50140 KB Output is correct
12 Correct 717 ms 40024 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1794 ms 39496 KB Output is correct
2 Correct 38 ms 5704 KB Output is correct
3 Correct 211 ms 6844 KB Output is correct
4 Correct 88 ms 7048 KB Output is correct
5 Correct 930 ms 41824 KB Output is correct
6 Correct 1755 ms 43328 KB Output is correct
7 Correct 907 ms 41800 KB Output is correct
8 Correct 1048 ms 41108 KB Output is correct
9 Correct 925 ms 41256 KB Output is correct
10 Correct 845 ms 41012 KB Output is correct
11 Correct 1399 ms 42356 KB Output is correct
12 Correct 1255 ms 42468 KB Output is correct
13 Correct 1269 ms 42172 KB Output is correct
14 Correct 934 ms 41868 KB Output is correct
15 Correct 878 ms 41864 KB Output is correct
16 Correct 1865 ms 43228 KB Output is correct
17 Correct 1760 ms 43420 KB Output is correct
18 Correct 1756 ms 43356 KB Output is correct
19 Correct 1696 ms 43428 KB Output is correct
20 Correct 1479 ms 42500 KB Output is correct
21 Correct 1815 ms 42376 KB Output is correct
22 Correct 1860 ms 43084 KB Output is correct
23 Correct 952 ms 41240 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1388 ms 95556 KB Output is correct
2 Correct 1424 ms 95268 KB Output is correct
3 Correct 1475 ms 95508 KB Output is correct
4 Correct 1464 ms 95264 KB Output is correct
5 Correct 1457 ms 95688 KB Output is correct
6 Correct 2078 ms 149172 KB Output is correct
7 Correct 2106 ms 147092 KB Output is correct
8 Correct 2107 ms 147196 KB Output is correct
9 Correct 35 ms 4436 KB Output is correct
10 Correct 1180 ms 118428 KB Output is correct
11 Correct 1140 ms 117412 KB Output is correct
12 Correct 1345 ms 78056 KB Output is correct
13 Correct 1464 ms 72872 KB Output is correct
14 Correct 1155 ms 85332 KB Output is correct
15 Correct 792 ms 101220 KB Output is correct
16 Correct 1345 ms 113440 KB Output is correct
17 Correct 1113 ms 84924 KB Output is correct
18 Correct 35 ms 4396 KB Output is correct
19 Correct 1217 ms 104632 KB Output is correct
20 Correct 1022 ms 76792 KB Output is correct
21 Correct 943 ms 60968 KB Output is correct
22 Correct 774 ms 53076 KB Output is correct
23 Correct 691 ms 41440 KB Output is correct
24 Correct 792 ms 50140 KB Output is correct
25 Correct 717 ms 40024 KB Output is correct
26 Correct 1471 ms 95316 KB Output is correct
27 Correct 1766 ms 120120 KB Output is correct
28 Correct 1474 ms 93784 KB Output is correct
29 Correct 1086 ms 57748 KB Output is correct
30 Correct 1744 ms 108268 KB Output is correct
31 Correct 1888 ms 109932 KB Output is correct
32 Correct 1732 ms 110384 KB Output is correct
33 Correct 1482 ms 94252 KB Output is correct
34 Correct 1605 ms 94296 KB Output is correct
35 Correct 1517 ms 94656 KB Output is correct
36 Correct 1198 ms 63672 KB Output is correct
37 Correct 1159 ms 62664 KB Output is correct
38 Correct 1125 ms 61328 KB Output is correct
39 Correct 997 ms 49056 KB Output is correct
40 Correct 967 ms 48476 KB Output is correct
41 Correct 970 ms 47960 KB Output is correct
42 Correct 1164 ms 48204 KB Output is correct
43 Correct 934 ms 47636 KB Output is correct
44 Correct 941 ms 47108 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 38 ms 9468 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 38 ms 10200 KB Output is correct
6 Correct 30 ms 10424 KB Output is correct
7 Correct 35 ms 10960 KB Output is correct
8 Correct 38 ms 8908 KB Output is correct
9 Correct 47 ms 14828 KB Output is correct
10 Correct 39 ms 9676 KB Output is correct
11 Correct 39 ms 9496 KB Output is correct
12 Correct 47 ms 11980 KB Output is correct
13 Correct 45 ms 10076 KB Output is correct
14 Correct 41 ms 9332 KB Output is correct
15 Correct 47 ms 10116 KB Output is correct
16 Correct 43 ms 12940 KB Output is correct
17 Correct 42 ms 12064 KB Output is correct
18 Correct 1388 ms 95556 KB Output is correct
19 Correct 1424 ms 95268 KB Output is correct
20 Correct 1475 ms 95508 KB Output is correct
21 Correct 1464 ms 95264 KB Output is correct
22 Correct 1457 ms 95688 KB Output is correct
23 Correct 2078 ms 149172 KB Output is correct
24 Correct 2106 ms 147092 KB Output is correct
25 Correct 2107 ms 147196 KB Output is correct
26 Correct 35 ms 4436 KB Output is correct
27 Correct 1180 ms 118428 KB Output is correct
28 Correct 1140 ms 117412 KB Output is correct
29 Correct 1345 ms 78056 KB Output is correct
30 Correct 1464 ms 72872 KB Output is correct
31 Correct 1155 ms 85332 KB Output is correct
32 Correct 792 ms 101220 KB Output is correct
33 Correct 1345 ms 113440 KB Output is correct
34 Correct 1113 ms 84924 KB Output is correct
35 Correct 35 ms 4396 KB Output is correct
36 Correct 1217 ms 104632 KB Output is correct
37 Correct 1022 ms 76792 KB Output is correct
38 Correct 943 ms 60968 KB Output is correct
39 Correct 774 ms 53076 KB Output is correct
40 Correct 691 ms 41440 KB Output is correct
41 Correct 792 ms 50140 KB Output is correct
42 Correct 717 ms 40024 KB Output is correct
43 Correct 1794 ms 39496 KB Output is correct
44 Correct 38 ms 5704 KB Output is correct
45 Correct 211 ms 6844 KB Output is correct
46 Correct 88 ms 7048 KB Output is correct
47 Correct 930 ms 41824 KB Output is correct
48 Correct 1755 ms 43328 KB Output is correct
49 Correct 907 ms 41800 KB Output is correct
50 Correct 1048 ms 41108 KB Output is correct
51 Correct 925 ms 41256 KB Output is correct
52 Correct 845 ms 41012 KB Output is correct
53 Correct 1399 ms 42356 KB Output is correct
54 Correct 1255 ms 42468 KB Output is correct
55 Correct 1269 ms 42172 KB Output is correct
56 Correct 934 ms 41868 KB Output is correct
57 Correct 878 ms 41864 KB Output is correct
58 Correct 1865 ms 43228 KB Output is correct
59 Correct 1760 ms 43420 KB Output is correct
60 Correct 1756 ms 43356 KB Output is correct
61 Correct 1696 ms 43428 KB Output is correct
62 Correct 1479 ms 42500 KB Output is correct
63 Correct 1815 ms 42376 KB Output is correct
64 Correct 1860 ms 43084 KB Output is correct
65 Correct 952 ms 41240 KB Output is correct
66 Correct 1471 ms 95316 KB Output is correct
67 Correct 1766 ms 120120 KB Output is correct
68 Correct 1474 ms 93784 KB Output is correct
69 Correct 1086 ms 57748 KB Output is correct
70 Correct 1744 ms 108268 KB Output is correct
71 Correct 1888 ms 109932 KB Output is correct
72 Correct 1732 ms 110384 KB Output is correct
73 Correct 1482 ms 94252 KB Output is correct
74 Correct 1605 ms 94296 KB Output is correct
75 Correct 1517 ms 94656 KB Output is correct
76 Correct 1198 ms 63672 KB Output is correct
77 Correct 1159 ms 62664 KB Output is correct
78 Correct 1125 ms 61328 KB Output is correct
79 Correct 997 ms 49056 KB Output is correct
80 Correct 967 ms 48476 KB Output is correct
81 Correct 970 ms 47960 KB Output is correct
82 Correct 1164 ms 48204 KB Output is correct
83 Correct 934 ms 47636 KB Output is correct
84 Correct 941 ms 47108 KB Output is correct
85 Correct 2352 ms 101004 KB Output is correct
86 Correct 222 ms 13612 KB Output is correct
87 Correct 135 ms 17964 KB Output is correct
88 Correct 1403 ms 110716 KB Output is correct
89 Correct 2260 ms 100072 KB Output is correct
90 Correct 1403 ms 118736 KB Output is correct
91 Correct 1564 ms 98108 KB Output is correct
92 Correct 1567 ms 98152 KB Output is correct
93 Correct 2099 ms 132748 KB Output is correct
94 Correct 1881 ms 98688 KB Output is correct
95 Correct 1905 ms 98668 KB Output is correct
96 Correct 2093 ms 137404 KB Output is correct
97 Correct 1084 ms 70292 KB Output is correct
98 Correct 1143 ms 67776 KB Output is correct
99 Correct 2221 ms 101296 KB Output is correct
100 Correct 2238 ms 100212 KB Output is correct
101 Correct 2463 ms 99472 KB Output is correct
102 Correct 2287 ms 99592 KB Output is correct
103 Correct 2279 ms 142800 KB Output is correct
104 Correct 2359 ms 141992 KB Output is correct
105 Correct 1817 ms 76496 KB Output is correct
106 Correct 1383 ms 59752 KB Output is correct
107 Correct 1582 ms 81748 KB Output is correct
108 Correct 2099 ms 132300 KB Output is correct
109 Correct 1499 ms 142832 KB Output is correct