oj.uz

Submission #171270

# Submission time Handle Problem Language Result Execution time Memory
171270 2019-12-28T06:58:57 Z gs18103 Designated Cities (JOI19_designated_cities) C++14
100 / 100
 591 ms 39728 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define eb emplace_back
#define em emplace
#define all(v) v.begin(), v.end()

using namespace std;
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

const int MAX = 101010;
const int INF = 1e9;
const ll LINF = 1e18;

vector <pair <int, pll> > g[2*MAX];
ll d[2*MAX], sum, ans[2*MAX], up[2*MAX];
bool chk[2*MAX];
int deg[2*MAX];

void dfs(int x, int pa) {
    for(auto i : g[x]) {
        if(i.fi == pa) continue;
        d[i.fi] = d[x] + i.se.fi;
        up[i.fi] = up[x] + i.se.se;
        sum += i.se.fi;
        dfs(i.fi, x);
    }
}

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

    int n;
    cin >> n;
    for(int i = 1; i < n; i++) {
        int u, v; ll c, d;
        cin >> u >> v >> c >> d;
        g[u].eb(v, make_pair(c, d)), g[v].eb(u, make_pair(d, c));
        deg[u]++, deg[v]++;
    }
    priority_queue <pll, vector <pll>, greater <pll> > pq;
    for(int i = 1; i <= n; i++) {
        if(deg[i] == 1) pq.em(g[i][0].se.se, i);
    }
    while(pq.size() > 2) {
        pll cur = pq.top();
        pq.pop();
        chk[cur.se] = true;
        int u;
        for(auto i : g[cur.se]) {
            if(!chk[i.fi]) {
                u = i.fi;
                break;
            }
        }
        deg[u]--;
        if(deg[u] == 1) {
            for(auto i : g[u]) {
                if(!chk[i.fi]) {
                    pq.em(cur.fi + i.se.se, u);
                    break;
                }
            }
            continue;
        }
        ans[pq.size()] = ans[pq.size()+1] + cur.fi;
    }
    dfs(1, 0);
    ans[1] = LINF;
    for(int i = 1; i <= n; i++) {
        ans[1] = min(ans[1], sum - d[i] + up[i]);
    }
    
    int q;
    cin >> q;
    while(q--) {
        int u; cin >> u;
        cout << ans[u] << '\n';
    }
}

Compilation message

designated_cities.cpp: In function 'int main()':
designated_cities.cpp:51:13: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized]
         int u;
             ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 7 ms 5112 KB Output is correct
3 Correct 9 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 1 ms 5240 KB Output is correct
6 Correct 7 ms 5112 KB Output is correct
7 Correct 6 ms 5144 KB Output is correct
8 Correct 4 ms 5112 KB Output is correct
9 Correct 7 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5112 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5084 KB Output is correct
2 Correct 514 ms 24540 KB Output is correct
3 Correct 383 ms 36248 KB Output is correct
4 Correct 416 ms 29480 KB Output is correct
5 Correct 426 ms 31844 KB Output is correct
6 Correct 450 ms 32268 KB Output is correct
7 Correct 506 ms 32800 KB Output is correct
8 Correct 381 ms 37240 KB Output is correct
9 Correct 351 ms 35552 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 427 ms 24516 KB Output is correct
3 Correct 328 ms 31352 KB Output is correct
4 Correct 417 ms 24552 KB Output is correct
5 Correct 501 ms 25652 KB Output is correct
6 Correct 534 ms 26168 KB Output is correct
7 Correct 401 ms 29088 KB Output is correct
8 Correct 448 ms 29608 KB Output is correct
9 Correct 372 ms 29208 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 7 ms 5112 KB Output is correct
3 Correct 9 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 1 ms 5240 KB Output is correct
6 Correct 7 ms 5112 KB Output is correct
7 Correct 6 ms 5144 KB Output is correct
8 Correct 4 ms 5112 KB Output is correct
9 Correct 7 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5112 KB Output is correct
12 Correct 7 ms 5112 KB Output is correct
13 Correct 10 ms 5372 KB Output is correct
14 Correct 9 ms 5368 KB Output is correct
15 Correct 11 ms 5496 KB Output is correct
16 Correct 10 ms 5392 KB Output is correct
17 Correct 10 ms 5368 KB Output is correct
18 Correct 10 ms 5496 KB Output is correct
19 Correct 9 ms 5368 KB Output is correct
20 Correct 11 ms 5496 KB Output is correct
21 Correct 9 ms 5368 KB Output is correct
22 Correct 7 ms 5368 KB Output is correct
23 Correct 9 ms 5496 KB Output is correct
24 Correct 9 ms 5496 KB Output is correct
25 Correct 9 ms 5496 KB Output is correct
26 Correct 9 ms 5496 KB Output is correct

Subtask #5
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5084 KB Output is correct
2 Correct 514 ms 24540 KB Output is correct
3 Correct 383 ms 36248 KB Output is correct
4 Correct 416 ms 29480 KB Output is correct
5 Correct 426 ms 31844 KB Output is correct
6 Correct 450 ms 32268 KB Output is correct
7 Correct 506 ms 32800 KB Output is correct
8 Correct 381 ms 37240 KB Output is correct
9 Correct 351 ms 35552 KB Output is correct
10 Correct 7 ms 5112 KB Output is correct
11 Correct 427 ms 24516 KB Output is correct
12 Correct 328 ms 31352 KB Output is correct
13 Correct 417 ms 24552 KB Output is correct
14 Correct 501 ms 25652 KB Output is correct
15 Correct 534 ms 26168 KB Output is correct
16 Correct 401 ms 29088 KB Output is correct
17 Correct 448 ms 29608 KB Output is correct
18 Correct 372 ms 29208 KB Output is correct
19 Correct 7 ms 5112 KB Output is correct
20 Correct 483 ms 30884 KB Output is correct
21 Correct 339 ms 37640 KB Output is correct
22 Correct 399 ms 29440 KB Output is correct
23 Correct 537 ms 31196 KB Output is correct
24 Correct 439 ms 29912 KB Output is correct
25 Correct 514 ms 30960 KB Output is correct
26 Correct 435 ms 29908 KB Output is correct
27 Correct 422 ms 31272 KB Output is correct
28 Correct 416 ms 32000 KB Output is correct
29 Correct 428 ms 31192 KB Output is correct
30 Correct 411 ms 30948 KB Output is correct
31 Correct 458 ms 32700 KB Output is correct
32 Correct 478 ms 36012 KB Output is correct
33 Correct 341 ms 35612 KB Output is correct

Subtask #6
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5112 KB Output is correct
2 Correct 7 ms 5112 KB Output is correct
3 Correct 9 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 1 ms 5240 KB Output is correct
6 Correct 7 ms 5112 KB Output is correct
7 Correct 6 ms 5144 KB Output is correct
8 Correct 4 ms 5112 KB Output is correct
9 Correct 7 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5112 KB Output is correct
12 Correct 5 ms 5084 KB Output is correct
13 Correct 514 ms 24540 KB Output is correct
14 Correct 383 ms 36248 KB Output is correct
15 Correct 416 ms 29480 KB Output is correct
16 Correct 426 ms 31844 KB Output is correct
17 Correct 450 ms 32268 KB Output is correct
18 Correct 506 ms 32800 KB Output is correct
19 Correct 381 ms 37240 KB Output is correct
20 Correct 351 ms 35552 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 427 ms 24516 KB Output is correct
23 Correct 328 ms 31352 KB Output is correct
24 Correct 417 ms 24552 KB Output is correct
25 Correct 501 ms 25652 KB Output is correct
26 Correct 534 ms 26168 KB Output is correct
27 Correct 401 ms 29088 KB Output is correct
28 Correct 448 ms 29608 KB Output is correct
29 Correct 372 ms 29208 KB Output is correct
30 Correct 7 ms 5112 KB Output is correct
31 Correct 10 ms 5372 KB Output is correct
32 Correct 9 ms 5368 KB Output is correct
33 Correct 11 ms 5496 KB Output is correct
34 Correct 10 ms 5392 KB Output is correct
35 Correct 10 ms 5368 KB Output is correct
36 Correct 10 ms 5496 KB Output is correct
37 Correct 9 ms 5368 KB Output is correct
38 Correct 11 ms 5496 KB Output is correct
39 Correct 9 ms 5368 KB Output is correct
40 Correct 7 ms 5368 KB Output is correct
41 Correct 9 ms 5496 KB Output is correct
42 Correct 9 ms 5496 KB Output is correct
43 Correct 9 ms 5496 KB Output is correct
44 Correct 9 ms 5496 KB Output is correct
45 Correct 7 ms 5112 KB Output is correct
46 Correct 483 ms 30884 KB Output is correct
47 Correct 339 ms 37640 KB Output is correct
48 Correct 399 ms 29440 KB Output is correct
49 Correct 537 ms 31196 KB Output is correct
50 Correct 439 ms 29912 KB Output is correct
51 Correct 514 ms 30960 KB Output is correct
52 Correct 435 ms 29908 KB Output is correct
53 Correct 422 ms 31272 KB Output is correct
54 Correct 416 ms 32000 KB Output is correct
55 Correct 428 ms 31192 KB Output is correct
56 Correct 411 ms 30948 KB Output is correct
57 Correct 458 ms 32700 KB Output is correct
58 Correct 478 ms 36012 KB Output is correct
59 Correct 341 ms 35612 KB Output is correct
60 Correct 7 ms 5112 KB Output is correct
61 Correct 480 ms 33548 KB Output is correct
62 Correct 362 ms 38060 KB Output is correct
63 Correct 481 ms 32112 KB Output is correct
64 Correct 577 ms 33740 KB Output is correct
65 Correct 544 ms 32312 KB Output is correct
66 Correct 566 ms 33712 KB Output is correct
67 Correct 562 ms 32424 KB Output is correct
68 Correct 591 ms 34104 KB Output is correct
69 Correct 475 ms 34608 KB Output is correct
70 Correct 473 ms 33568 KB Output is correct
71 Correct 463 ms 33616 KB Output is correct
72 Correct 428 ms 35868 KB Output is correct
73 Correct 412 ms 37432 KB Output is correct
74 Correct 377 ms 39728 KB Output is correct