oj.uz

Submission #1087942

# Submission time Handle Problem Language Result Execution time Memory
1087942 2024-09-13T14:58:31 Z vladilius Reconstruction Project (JOI22_reconstruction) C++17
70 / 100
 5000 ms 424928 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
#define ins insert
#define arr3 array<int, 3>
const int inf = 1e9 + 5;
 
struct dsu{
    vector<int> sz, p;
    int n;
    void init(int ns){
        n = ns;
        sz.resize(n + 1);
        p.resize(n + 1);
        for (int i = 1; i <= n; i++){
            p[i] = i;
            sz[i] = 1;
        }
    }
    int get(int v){
        if (p[v] != v){
            p[v] = get(p[v]);
        }
        return p[v];
    }
    void unite(int x, int y){
        x = get(x); y = get(y);
        if (x == y) return;
        if (sz[x] > sz[y]) swap(x, y);
        p[x] = y;
        sz[y] += sz[x];
    }
    bool same(int x, int y){
        return get(x) == get(y);
    }
    void clear(){
        for (int i = 1; i <= n; i++){
            p[i] = i;
            sz[i] = 1;
        }
    }
};
 
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n, m; cin>>n>>m;
    vector<arr3> ed;
    for (int i = 1; i <= m; i++){
        int a, b, w; cin>>a>>b>>w;
        ed.pb({a, b, w});
    }
    
    int q; cin>>q;
    vector<int> x(q + 1);
    vector<ll> out(q + 1);
    for (int i = 1; i <= q; i++){
        cin>>x[i];
    }
    
    auto cmp = [&](arr3& x, arr3& y){
        return x[2] < y[2];
    };
    sort(ed.begin(), ed.end(), cmp);
    vector<int> ws;
    for (int i = 0; i < m; i++) ws.pb(ed[i][2]);
    
    vector<int> :: iterator it;
    dsu T[m];
    for (int i = 0; i < m; i++) T[i].init(n);
    
    for (int i = m - 1; i >= 0; i--){
        auto [a, b, w] = ed[i];
        
        auto check = [&](int x){
            int ww = w + 2 * (x - w);
            it = upper_bound(ws.begin(), ws.end(), ww); it--;
            int j = (int) (it - ws.begin());
            return T[j].same(a, b);
        };
        
        int l = w, r = inf;
        while (l + 1 < r){
            int m = (l + r) / 2;
            if (check(m)){
                r = m - 1;
            }
            else {
                l = m;
            }
        }
        if (!check(r)) l = r;
        if (check(l)) continue;
    
        for (int j = 1; j <= q; j++){
            if (w <= x[j] && x[j] <= l){
                out[j] += abs(x[j] - w);
            }
        }
 
        for (int j = i; j < m; j++){
            if (T[j].same(a, b)) break;
            T[j].unite(a, b);
        }
    }
    
    for (int i = 0; i < m; i++) T[i].clear();
    
    for (int i = 0; i < m; i++){
        auto [a, b, w] = ed[i];
        
        auto check = [&](int x){
            int ww = 2 * x + 1 - w;
            it = lower_bound(ws.begin(), ws.end(), ww);
            int j = (int) (it - ws.begin());
            return T[j].same(a, b);
        };
        
        int l = 0, r = w - 1;
        while (l + 1 < r){
            int m = (l + r) / 2;
            if (check(m)){
                l = m + 1;
            }
            else {
                r = m;
            }
        }
        if (!check(l)) r = l;
        if (check(r)) continue;
               
        for (int j = 1; j <= q; j++){
            if (r <= x[j] && x[j] < w){
                out[j] += abs(x[j] - w);
            }
        }
        
        for (int j = i; j >= 0; j--){
            if (T[j].same(a, b)) break;
            T[j].unite(a, b);
        }
    }
    
    for (int i = 1; i <= q; i++){
        cout<<out[i]<<"\n";
    }
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1757 ms 403688 KB Output is correct
21 Correct 1948 ms 403676 KB Output is correct
22 Correct 1858 ms 403728 KB Output is correct
23 Correct 1666 ms 403908 KB Output is correct
24 Correct 1803 ms 403720 KB Output is correct
25 Correct 1736 ms 403732 KB Output is correct
26 Correct 1622 ms 403728 KB Output is correct
27 Correct 1685 ms 403652 KB Output is correct
28 Correct 1400 ms 403724 KB Output is correct
29 Correct 1899 ms 403648 KB Output is correct
30 Correct 1722 ms 403912 KB Output is correct
31 Correct 1708 ms 403728 KB Output is correct
32 Correct 1820 ms 403732 KB Output is correct
33 Correct 1722 ms 403520 KB Output is correct
34 Correct 282 ms 403648 KB Output is correct
35 Correct 1602 ms 403724 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Execution timed out 5110 ms 424928 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1269 ms 37948 KB Output is correct
21 Correct 1235 ms 37968 KB Output is correct
22 Correct 1252 ms 37972 KB Output is correct
23 Correct 1235 ms 37972 KB Output is correct
24 Correct 1239 ms 37716 KB Output is correct
25 Correct 1315 ms 37716 KB Output is correct
26 Correct 1248 ms 37712 KB Output is correct
27 Correct 1318 ms 37972 KB Output is correct
28 Correct 1248 ms 37796 KB Output is correct
29 Correct 1300 ms 37652 KB Output is correct
30 Correct 1273 ms 37972 KB Output is correct
31 Correct 1254 ms 37564 KB Output is correct
32 Correct 779 ms 38308 KB Output is correct
33 Correct 1268 ms 37716 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1757 ms 403688 KB Output is correct
21 Correct 1948 ms 403676 KB Output is correct
22 Correct 1858 ms 403728 KB Output is correct
23 Correct 1666 ms 403908 KB Output is correct
24 Correct 1803 ms 403720 KB Output is correct
25 Correct 1736 ms 403732 KB Output is correct
26 Correct 1622 ms 403728 KB Output is correct
27 Correct 1685 ms 403652 KB Output is correct
28 Correct 1400 ms 403724 KB Output is correct
29 Correct 1899 ms 403648 KB Output is correct
30 Correct 1722 ms 403912 KB Output is correct
31 Correct 1708 ms 403728 KB Output is correct
32 Correct 1820 ms 403732 KB Output is correct
33 Correct 1722 ms 403520 KB Output is correct
34 Correct 282 ms 403648 KB Output is correct
35 Correct 1602 ms 403724 KB Output is correct
36 Correct 3591 ms 404152 KB Output is correct
37 Correct 3738 ms 404164 KB Output is correct
38 Correct 3655 ms 404152 KB Output is correct
39 Correct 3523 ms 404316 KB Output is correct
40 Correct 3592 ms 404140 KB Output is correct
41 Correct 3464 ms 404160 KB Output is correct
42 Correct 3526 ms 404148 KB Output is correct
43 Correct 3588 ms 404148 KB Output is correct
44 Correct 3408 ms 404148 KB Output is correct
45 Correct 2076 ms 404156 KB Output is correct
46 Correct 3346 ms 404328 KB Output is correct
47 Correct 3710 ms 404152 KB Output is correct
48 Correct 3694 ms 404164 KB Output is correct
49 Correct 3542 ms 404164 KB Output is correct
50 Correct 317 ms 404420 KB Output is correct
51 Correct 3387 ms 404160 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1757 ms 403688 KB Output is correct
21 Correct 1948 ms 403676 KB Output is correct
22 Correct 1858 ms 403728 KB Output is correct
23 Correct 1666 ms 403908 KB Output is correct
24 Correct 1803 ms 403720 KB Output is correct
25 Correct 1736 ms 403732 KB Output is correct
26 Correct 1622 ms 403728 KB Output is correct
27 Correct 1685 ms 403652 KB Output is correct
28 Correct 1400 ms 403724 KB Output is correct
29 Correct 1899 ms 403648 KB Output is correct
30 Correct 1722 ms 403912 KB Output is correct
31 Correct 1708 ms 403728 KB Output is correct
32 Correct 1820 ms 403732 KB Output is correct
33 Correct 1722 ms 403520 KB Output is correct
34 Correct 282 ms 403648 KB Output is correct
35 Correct 1602 ms 403724 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Execution timed out 5110 ms 424928 KB Time limit exceeded
40 Halted 0 ms 0 KB -