oj.uz

답안 #566644

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
566644 2022-05-22T13:44:58 Z stevancv 공장들 (JOI14_factories) C++14
100 / 100
 4563 ms 364144 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 5e5 + 2;
const int M = 1e5 + 2;
int mod = 1000000007;
vector<array<int, 2>> g[N];
int sz[N];
bool was[N];
ll mn[N];
void Dfs(int s, int e) {
    sz[s] = 1;
    for (auto u : g[s]) {
        if (u[0] == e || was[u[0]]) continue;
        Dfs(u[0], s);
        sz[s] += sz[u[0]];
    }
}
int Find(int s, int e, int n) {
    for (auto u : g[s]) {
        if (u[0] == e || was[u[0]]) continue;
        if (2 * sz[u[0]] > n) return Find(u[0], s, n);
    }
    return s;
}
int FindCentroid(int node) {
    Dfs(node, -1);
    return Find(node, -1, sz[node]);
}
vector<array<ll, 2>> p[N];
void Solve(int s, int e, int r, ll d) {
    p[s].push_back({r, d});
    for (auto u : g[s]) {
        if (was[u[0]] || u[0] == e) continue;
        Solve(u[0], s, r, d + u[1]);
    }
}
void Decompose(int s) {
    s = FindCentroid(s);
    was[s] = 1;
    Solve(s, -1, s, 0);
    for (auto u : g[s]) {
        if (!was[u[0]]) Decompose(u[0]);
    }
}
void Init(int n, int *a, int *b, int* d) {
    for (int i = 0; i < n - 1; i++) {
        g[a[i]].push_back({b[i], d[i]});
        g[b[i]].push_back({a[i], d[i]});
    }
    Decompose(0);
    for (int i = 0; i < n; i++) mn[i] = 1e18;
}
ll Query(int a, int *x, int b, int *y) {
    vector<int> ch;
    for (int j = 0; j < a; j++) {
        for (auto d : p[x[j]]) {
            smin(mn[d[0]], d[1]);
            ch.push_back(d[0]);
        }
    }
    ll ans = 1e18;
    for (int j = 0; j < b; j++) {
        for (auto d : p[y[j]]) {
            smin(ans, mn[d[0]] + d[1]);
        }
    }
    for (int u : ch) mn[u] = 1e18;
    return ans;
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 24148 KB Output is correct
2 Correct 281 ms 32976 KB Output is correct
3 Correct 298 ms 33356 KB Output is correct
4 Correct 364 ms 33668 KB Output is correct
5 Correct 327 ms 33896 KB Output is correct
6 Correct 235 ms 32332 KB Output is correct
7 Correct 306 ms 33300 KB Output is correct
8 Correct 318 ms 33372 KB Output is correct
9 Correct 318 ms 34036 KB Output is correct
10 Correct 266 ms 32328 KB Output is correct
11 Correct 301 ms 33324 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23960 KB Output is correct
2 Correct 2239 ms 188780 KB Output is correct
3 Correct 3283 ms 276964 KB Output is correct
4 Correct 990 ms 104232 KB Output is correct
5 Correct 4396 ms 356132 KB Output is correct
6 Correct 3384 ms 278160 KB Output is correct
7 Correct 987 ms 81328 KB Output is correct
8 Correct 455 ms 59096 KB Output is correct
9 Correct 1167 ms 94968 KB Output is correct
10 Correct 1048 ms 82740 KB Output is correct

Subtask #3
67.0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 24148 KB Output is correct
2 Correct 281 ms 32976 KB Output is correct
3 Correct 298 ms 33356 KB Output is correct
4 Correct 364 ms 33668 KB Output is correct
5 Correct 327 ms 33896 KB Output is correct
6 Correct 235 ms 32332 KB Output is correct
7 Correct 306 ms 33300 KB Output is correct
8 Correct 318 ms 33372 KB Output is correct
9 Correct 318 ms 34036 KB Output is correct
10 Correct 266 ms 32328 KB Output is correct
11 Correct 301 ms 33324 KB Output is correct
12 Correct 15 ms 23960 KB Output is correct
13 Correct 2239 ms 188780 KB Output is correct
14 Correct 3283 ms 276964 KB Output is correct
15 Correct 990 ms 104232 KB Output is correct
16 Correct 4396 ms 356132 KB Output is correct
17 Correct 3384 ms 278160 KB Output is correct
18 Correct 987 ms 81328 KB Output is correct
19 Correct 455 ms 59096 KB Output is correct
20 Correct 1167 ms 94968 KB Output is correct
21 Correct 1048 ms 82740 KB Output is correct
22 Correct 2463 ms 216348 KB Output is correct
23 Correct 2525 ms 223580 KB Output is correct
24 Correct 3772 ms 291388 KB Output is correct
25 Correct 3850 ms 293628 KB Output is correct
26 Correct 3707 ms 285600 KB Output is correct
27 Correct 4563 ms 364144 KB Output is correct
28 Correct 1027 ms 115476 KB Output is correct
29 Correct 3703 ms 284496 KB Output is correct
30 Correct 3721 ms 284004 KB Output is correct
31 Correct 3754 ms 284896 KB Output is correct
32 Correct 1179 ms 100200 KB Output is correct
33 Correct 482 ms 59936 KB Output is correct
34 Correct 791 ms 74080 KB Output is correct
35 Correct 822 ms 74732 KB Output is correct
36 Correct 962 ms 79844 KB Output is correct
37 Correct 924 ms 79820 KB Output is correct