oj.uz

답안 #770166

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
770166 2023-06-30T21:32:33 Z PurpleCrayon 별자리 3 (JOI20_constellation3) C++17
35 / 100
 1500 ms 28352 KB 
#include <bits/stdc++.h>
using namespace std;

#define sz(v) int(v.size())
#define ar array
typedef long long ll;
const int N = 2e5+10, MOD = 998244353;

int n, m, a[N], bro[N];
int par[N];
vector<int> child[N];
vector<pair<int, ll>> can[N];
ll dp[N];

void build_tree() {
    memset(par, -1, sizeof(par));
    vector<int> st;
    for (int i = 0; i < n; i++) {
        int last = -1;
        while (sz(st) && a[st.back()] < a[i]) {
            last = st.back();
            st.pop_back();
        }

        if (sz(st)) par[i] = st.back();
        if (last != -1) par[last] = i;
        st.push_back(i);
    }
}

ll f(int bot, int top) {
    if (bot == top) return 0;
    return dp[bro[bot]] + f(par[bot], top);
}

void dfs(int c) {
    for (int nxt : child[c]) {
        dfs(nxt);
    }

    dp[c] = 0;
    for (int nxt : child[c]) dp[c] += dp[nxt];
    for (auto [v, x] : can[c]) {
        ll cur = x + f(v, c);
        for (int nxt : child[v]) cur += dp[nxt];
        dp[c] = max(dp[c], cur);
    }
}

void solve() {
    cin >> n;
    for (int i = 0; i < n; i++) cin >> a[i];

    build_tree();
    int root = -1;
    for (int i = 0; i < n; i++) {
        if (par[i] == -1) {
            root = i;
        }
    }
    for (int i = 0; i < n; i++) if (i != root) {
        child[par[i]].push_back(i);
    }

    memset(bro, -1, sizeof(bro));
    for (int i = 0; i < n; i++) if (i != root) {
        for (int nxt : child[par[i]]) if (nxt != i) {
            bro[i] = nxt;
        }
    }

    cin >> m;
    ll base = 0;
    for (int i = 0; i < m; i++) {
        int x, y; ll c; cin >> x >> y >> c, --x; base += c;

        int top = x;
        while (par[top] != -1 && a[par[top]] < y) top = par[top];

        can[top].push_back({x, c});
    }


    dfs(root);
    cout << base - dp[root] << '\n';
}

int main() {
    ios::sync_with_stdio(false); cin.tie(0);
    int T = 1;
    // cin >> T;
    while (T--) solve();
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 11268 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 5 ms 11220 KB Output is correct
4 Correct 7 ms 11220 KB Output is correct
5 Correct 5 ms 11276 KB Output is correct
6 Correct 5 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 5 ms 11220 KB Output is correct
9 Correct 5 ms 11268 KB Output is correct
10 Correct 5 ms 11220 KB Output is correct
11 Correct 5 ms 11272 KB Output is correct
12 Correct 6 ms 11220 KB Output is correct
13 Correct 5 ms 11220 KB Output is correct
14 Correct 5 ms 11220 KB Output is correct
15 Correct 5 ms 11220 KB Output is correct
16 Correct 7 ms 11220 KB Output is correct
17 Correct 5 ms 11220 KB Output is correct
18 Correct 6 ms 11272 KB Output is correct
19 Correct 6 ms 11220 KB Output is correct
20 Correct 5 ms 11220 KB Output is correct
21 Correct 5 ms 11220 KB Output is correct
22 Correct 5 ms 11272 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 11268 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 5 ms 11220 KB Output is correct
4 Correct 7 ms 11220 KB Output is correct
5 Correct 5 ms 11276 KB Output is correct
6 Correct 5 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 5 ms 11220 KB Output is correct
9 Correct 5 ms 11268 KB Output is correct
10 Correct 5 ms 11220 KB Output is correct
11 Correct 5 ms 11272 KB Output is correct
12 Correct 6 ms 11220 KB Output is correct
13 Correct 5 ms 11220 KB Output is correct
14 Correct 5 ms 11220 KB Output is correct
15 Correct 5 ms 11220 KB Output is correct
16 Correct 7 ms 11220 KB Output is correct
17 Correct 5 ms 11220 KB Output is correct
18 Correct 6 ms 11272 KB Output is correct
19 Correct 6 ms 11220 KB Output is correct
20 Correct 5 ms 11220 KB Output is correct
21 Correct 5 ms 11220 KB Output is correct
22 Correct 5 ms 11272 KB Output is correct
23 Correct 8 ms 11392 KB Output is correct
24 Correct 6 ms 11348 KB Output is correct
25 Correct 6 ms 11448 KB Output is correct
26 Correct 7 ms 11408 KB Output is correct
27 Correct 6 ms 11348 KB Output is correct
28 Correct 6 ms 11348 KB Output is correct
29 Correct 6 ms 11348 KB Output is correct
30 Correct 6 ms 11364 KB Output is correct
31 Correct 6 ms 11408 KB Output is correct
32 Correct 10 ms 11536 KB Output is correct
33 Correct 9 ms 11408 KB Output is correct
34 Correct 8 ms 11408 KB Output is correct
35 Correct 8 ms 11448 KB Output is correct
36 Correct 8 ms 11476 KB Output is correct
37 Correct 9 ms 11556 KB Output is correct
38 Correct 6 ms 11604 KB Output is correct
39 Correct 6 ms 11348 KB Output is correct
40 Correct 10 ms 11576 KB Output is correct
41 Correct 6 ms 11348 KB Output is correct
42 Correct 6 ms 11348 KB Output is correct
43 Correct 9 ms 11476 KB Output is correct
44 Correct 7 ms 11448 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 11268 KB Output is correct
2 Correct 6 ms 11220 KB Output is correct
3 Correct 5 ms 11220 KB Output is correct
4 Correct 7 ms 11220 KB Output is correct
5 Correct 5 ms 11276 KB Output is correct
6 Correct 5 ms 11220 KB Output is correct
7 Correct 6 ms 11220 KB Output is correct
8 Correct 5 ms 11220 KB Output is correct
9 Correct 5 ms 11268 KB Output is correct
10 Correct 5 ms 11220 KB Output is correct
11 Correct 5 ms 11272 KB Output is correct
12 Correct 6 ms 11220 KB Output is correct
13 Correct 5 ms 11220 KB Output is correct
14 Correct 5 ms 11220 KB Output is correct
15 Correct 5 ms 11220 KB Output is correct
16 Correct 7 ms 11220 KB Output is correct
17 Correct 5 ms 11220 KB Output is correct
18 Correct 6 ms 11272 KB Output is correct
19 Correct 6 ms 11220 KB Output is correct
20 Correct 5 ms 11220 KB Output is correct
21 Correct 5 ms 11220 KB Output is correct
22 Correct 5 ms 11272 KB Output is correct
23 Correct 8 ms 11392 KB Output is correct
24 Correct 6 ms 11348 KB Output is correct
25 Correct 6 ms 11448 KB Output is correct
26 Correct 7 ms 11408 KB Output is correct
27 Correct 6 ms 11348 KB Output is correct
28 Correct 6 ms 11348 KB Output is correct
29 Correct 6 ms 11348 KB Output is correct
30 Correct 6 ms 11364 KB Output is correct
31 Correct 6 ms 11408 KB Output is correct
32 Correct 10 ms 11536 KB Output is correct
33 Correct 9 ms 11408 KB Output is correct
34 Correct 8 ms 11408 KB Output is correct
35 Correct 8 ms 11448 KB Output is correct
36 Correct 8 ms 11476 KB Output is correct
37 Correct 9 ms 11556 KB Output is correct
38 Correct 6 ms 11604 KB Output is correct
39 Correct 6 ms 11348 KB Output is correct
40 Correct 10 ms 11576 KB Output is correct
41 Correct 6 ms 11348 KB Output is correct
42 Correct 6 ms 11348 KB Output is correct
43 Correct 9 ms 11476 KB Output is correct
44 Correct 7 ms 11448 KB Output is correct
45 Correct 109 ms 28268 KB Output is correct
46 Correct 121 ms 28104 KB Output is correct
47 Correct 115 ms 28352 KB Output is correct
48 Correct 110 ms 28200 KB Output is correct
49 Correct 107 ms 27996 KB Output is correct
50 Correct 122 ms 27868 KB Output is correct
51 Correct 107 ms 27900 KB Output is correct
52 Correct 132 ms 28348 KB Output is correct
53 Correct 107 ms 28104 KB Output is correct
54 Execution timed out 1586 ms 18696 KB Time limit exceeded
55 Halted 0 ms 0 KB -