oj.uz

Submission #1087931

# Submission time Handle Problem Language Result Execution time Memory
1087931 2024-09-13T14:49:33 Z vladilius Reconstruction Project (JOI22_reconstruction) C++17
31 / 100
 5000 ms 429744 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;
const int N = 5e2;

struct dsu{
    int sz[N + 1], p[N + 1];
    int n;
    void init(int ns){
        n = ns;
        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 it1, it2;
    dsu T[m];
    for (int i = 0; i < m; i++) T[i].init(n);
    
    vector<ll> p1(q + 2);
    vector<int> p2(q + 2);
    
    for (int i = m - 1; i >= 0; i--){
        auto [a, b, w] = ed[i];

        int l = i, r = m - 1;
        while (l + 1 < r){
            int k = (l + r) / 2;
            if (T[k].same(a, b)){
                r = k - 1;
            }
            else {
                l = k;
            }
        }
        if (!T[r].same(a, b)) l = r;
        
        if (l == (m - 1)) l = inf;
        else l = (ws[l + 1] + w - 1) / 2;
        
        it1 = lower_bound(x.begin() + 1, x.end(), w);
        it2 = upper_bound(x.begin() + 1, x.end(), l);
        l = (int) (it1 - x.begin()); r = (int) (it2 - x.begin());
        if (l > r) continue;
        p1[l] -= w; p1[r] += w;
        p2[l]++; p2[r]--;

        for (int j = i; j < m; j++){
            if (T[j].same(a, b)) continue;
            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];
        
        int l = 0, r = i;
        while (l + 1 < r){
            int k = (l + r) / 2;
            if (T[k].same(a, b)){
                l = k + 1;
            }
            else {
                r = k;
            }
        }
        if (!T[l].same(a, b)) r = l;

        if (!r) r = 0;
        else r = (ws[r - 1] + w + 1) / 2;
 
        it1 = lower_bound(x.begin() + 1, x.end(), r);
        it2 = lower_bound(x.begin() + 1, x.end(), w);
        l = (int) (it1 - x.begin()); r = (int)(it2 - x.begin());
        if (l > r) continue;
        p1[l] += w; p1[r] -= w;
        p2[l]--; p2[r]++;

        for (int j = i; j >= 0; j--){
            if (T[j].same(a, b)) continue;
            T[j].unite(a, b);
        }
    }
    
    ll s1 = 0; int s2 = 0;
    for (int i = 1; i <= q; i++){
        s1 += p1[i];
        s2 += p2[i];
        cout<<1LL * x[i] * s2 + s1<<"\n";
    }
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 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
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 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 1 ms 344 KB Output is correct
20 Execution timed out 5059 ms 396616 KB Time limit exceeded
21 Halted 0 ms 0 KB -

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 5105 ms 429744 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 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 600 KB Output is correct
20 Correct 143 ms 49588 KB Output is correct
21 Correct 142 ms 49748 KB Output is correct
22 Correct 138 ms 49852 KB Output is correct
23 Correct 139 ms 49748 KB Output is correct
24 Correct 139 ms 49876 KB Output is correct
25 Correct 142 ms 49788 KB Output is correct
26 Correct 137 ms 49700 KB Output is correct
27 Correct 135 ms 49744 KB Output is correct
28 Correct 155 ms 49752 KB Output is correct
29 Correct 142 ms 49752 KB Output is correct
30 Correct 170 ms 49744 KB Output is correct
31 Correct 160 ms 49572 KB Output is correct
32 Correct 143 ms 50212 KB Output is correct
33 Correct 139 ms 49488 KB Output is correct

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 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 1 ms 344 KB Output is correct
20 Execution timed out 5059 ms 396616 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 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 1 ms 344 KB Output is correct
20 Execution timed out 5059 ms 396616 KB Time limit exceeded
21 Halted 0 ms 0 KB -