oj.uz

Submission #592281

# Submission time Handle Problem Language Result Execution time Memory
592281 2022-07-08T20:54:26 Z Lobo Designated Cities (JOI19_designated_cities) C++17
23 / 100
 2000 ms 35952 KB 
#include<bits/stdc++.h>
using namespace std;

const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

const int maxn = 2e5+10;

int n, q, comp[maxn], mark[maxn], ans[maxn], pai[maxn];
pair<int,int> dp[maxn];
vector<pair<pair<int,int>,pair<int,int>>> edg;
vector<int> vert, g[maxn];

int dfsdeep(int u, int ant, int val) {
    vert.pb(u);
    pai[u] = ant;
    dp[u] = mp(val,u);
    int up = 0;
    for(auto id : g[u]) {
        int v = u^edg[id].fr.fr^edg[id].fr.sc;
        if(v == ant) continue;
        int w;
        if(edg[id].fr.fr == u) w = edg[id].sc.fr;
        else w = edg[id].sc.sc;
        if(ant == 0) 
            comp[v] = v;
        else
            comp[v] = comp[u];
        up+= edg[id].sc.fr+edg[id].sc.sc-w;
        up+= dfsdeep(v,u,w);
        dp[u] = max(dp[u],mp(dp[v].fr+val,dp[v].sc));
    }
    return up;
}

void sol(int rt) {
    vert.clear();
    int up = dfsdeep(rt,0,0);
    vector<pair<int,int>> deeps;
    //pego eu mesmo e os melhores dos outros
    for(auto v : vert) {
        mark[v] = 0;
        deeps.pb(mp(dp[v].fr,v));
    }
    sort(all(deeps),greater<pair<int,int>>());

    int qtdc = 1;
    int ans1 = up;
    ans[1] = max(ans[1],ans1);
    for(auto X : deeps) {
        int v = X.sc;
        if(mark[v]) continue;
        ans1+= dp[v].fr;
        qtdc++;
        ans[qtdc] = max(ans[qtdc],ans1);
        v = dp[v].sc;
        // cout << v << " " << X.fr << endl;

        while(v != 0 && mark[v] == 0) {
            mark[v] = 1;
            v = pai[v];
        }
        
    }

    //obriga a escolher de subs diferentes
    ans1 = up;
    qtdc = 2;
    for(auto v : vert) {
        mark[v] = 0;
    }
    int v1 = dp[rt].sc;
    ans1+= dp[rt].fr;
    int comp1 = comp[v1];
    while(v1 != 0 && mark[v1] == 0) {
        mark[v1] = 1;
        v1 = pai[v1];
    }

    for(auto X : deeps) {
        int v = X.sc;
        if(mark[v] || comp[dp[v].sc] == comp1) continue;
        ans1+= dp[v].fr;
        qtdc++;
        ans[qtdc] = max(ans[qtdc],ans1);
        v = dp[v].sc;
        // cout << v << " " << X.fr << endl;

        while(v != 0 && mark[v] == 0) {
            mark[v] = 1;
            v = pai[v];
        }
        break;
    }

    for(auto X : deeps) {
        int v = X.sc;
        if(mark[v]) continue;
        ans1+= dp[v].fr;
        qtdc++;
        ans[qtdc] = max(ans[qtdc],ans1);
        v = dp[v].sc;
        // cout << v << " " << X.fr << endl;

        while(v != 0 && mark[v] == 0) {
            mark[v] = 1;
            v = pai[v];
        }
    }

}

void solve() {
    cin >> n;
    for(int i = 0; i < n-1; i++) {
        int u,v,w1,w2;
        cin >> u >> v >> w1 >> w2;
        g[u].pb(i);
        g[v].pb(i);
        ans[0]+= w1+w2;
        edg.pb(mp(mp(u,v),mp(w1,w2)));
    }

    for(int i = 1; i <= n; i++) {
        sol(i);
    }
    for(int i = 2; i <= n; i++) {
        ans[i] = max(ans[i],ans[i-1]);
    }

    cin >> q;
    while(q--) {
        int x; cin >> x;
        cout << ans[0]-ans[x] << endl;
    }
}

int32_t main() {
    ios::sync_with_stdio(false); cin.tie(0);

    // freopen("in.in", "r", stdin);
    // freopen("out.out", "w", stdout);
    int tt = 1;
    // cin >> tt;
    while(tt--) {
        solve();
    }

}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 4 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Execution timed out 2084 ms 35952 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Execution timed out 2093 ms 35916 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 4 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 464 ms 5340 KB Output is correct
14 Correct 328 ms 5588 KB Output is correct
15 Correct 492 ms 5348 KB Output is correct
16 Correct 481 ms 5344 KB Output is correct
17 Correct 469 ms 5344 KB Output is correct
18 Correct 476 ms 5332 KB Output is correct
19 Correct 471 ms 5348 KB Output is correct
20 Correct 489 ms 5352 KB Output is correct
21 Correct 486 ms 5368 KB Output is correct
22 Correct 482 ms 5348 KB Output is correct
23 Correct 441 ms 5344 KB Output is correct
24 Correct 405 ms 5440 KB Output is correct
25 Correct 384 ms 5564 KB Output is correct
26 Correct 387 ms 5356 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Execution timed out 2084 ms 35952 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 4 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Execution timed out 2084 ms 35952 KB Time limit exceeded
14 Halted 0 ms 0 KB -