oj.uz

Submission #899267

# Submission time Handle Problem Language Result Execution time Memory
899267 2024-01-05T16:30:27 Z Denisov Fireworks (APIO16_fireworks) C++14
55 / 100
 2000 ms 282176 KB 
//#pragma GCC optimize("Ofast", "unroll-loops")
//#pragma GCC target("sse", "sse2", "sse3", "ssse3", "sse4")

#include <bits/stdc++.h>

#define all(a) a.begin(),a.end()
#define len(a) (int)(a.size())
#define mp make_pair
#define pb push_back
#define fir first
#define sec second
#define fi first
#define se second

using namespace std;

typedef pair<int, int> pii;
typedef long long ll;
typedef long double ld;

template<typename T>
bool umin(T &a, T b) {
    if (b < a) {
        a = b;
        return true;
    }
    return false;
}
template<typename T>
bool umax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

#ifdef KIVI
#define DEBUG for (bool _FLAG = true; _FLAG; _FLAG = false)
#define LOG(...) print(#__VA_ARGS__" ::", __VA_ARGS__) << endl
template <class ...Ts> auto &print(Ts ...ts) { return ((cerr << ts << " "), ...); }
#else
#define DEBUG while (false)
#define LOG(...)
#endif

const int max_n = 3e5 + 11, inf = 1000111222;


vector <pii> edge[max_n];

int n, m;

ll ans = 0;

bool del[max_n];

inline bool dfs (int v, int p = -1, bool gg = false) {
    bool ok = v >= n || gg;
    bool there = v >= n;
    for (auto [to, len] : edge[v]) {
        if (to == p) {
            continue;
        }
        if (dfs(to, v, ok)) {
            there = true;
            if (ok) {
                ans += len;
            }
        }
    }
    if (v >= n && !gg) {
        del[v] = true;
    }
    return there;
}

bool need[max_n];

priority_queue <ll> q[max_n];
ll b[max_n];
int k[max_n];

inline void solve (int v, int p = -1) {
    for (auto [to, len] : edge[v]) {
        if (to == p) {
            continue;
        }
        if (del[to]) {
            need[v] = true;
            b[v] -= len;
            ++k[v];
            q[v].push(len);
            q[v].push(len);
        }
        else {
            solve(to, v);
            if (!need[to]) {
                continue;
            }
            need[v] = true;
            int to_del = k[to] - 1;
            ll s = 0;
            for (int i = 0; i < to_del; i++) {
                s += q[to].top();
                q[to].pop();
            }
            ll a2 = q[to].top() + len;
            q[to].pop();
            ll a1 = q[to].top() + len;
            q[to].pop();
            while (!q[to].empty()) {
                q[v].push(q[to].top());
                q[to].pop();
            }
            q[v].push(a1);
            q[v].push(a2);
            b[v] += b[to] - len + s;
            ++k[v];
        }
    }
}

int main() {
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);

    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> m;
    for (int i = 1, p, c; i < n + m; i++) {
        cin >> p >> c;
        --p;
        edge[p].pb({i, c});
        edge[i].pb({p, c});
    }
    dfs(0);
    solve(0);
    while (k[0] > 0) {
        b[0] += q[0].top();
        q[0].pop();
        --k[0];
    }
    assert(!q[0].empty());
    cout << b[0] + ans << '\n';
}

Compilation message

fireworks.cpp: In function 'bool dfs(int, int, bool)':
fireworks.cpp:61:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   61 |     for (auto [to, len] : edge[v]) {
      |               ^
fireworks.cpp: In function 'void solve(int, int)':
fireworks.cpp:85:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   85 |     for (auto [to, len] : edge[v]) {
      |               ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20828 KB Output is correct
2 Correct 5 ms 20824 KB Output is correct
3 Correct 5 ms 20828 KB Output is correct
4 Correct 5 ms 20828 KB Output is correct
5 Correct 5 ms 20828 KB Output is correct
6 Correct 5 ms 20828 KB Output is correct
7 Correct 5 ms 20824 KB Output is correct
8 Correct 4 ms 20840 KB Output is correct
9 Correct 5 ms 20944 KB Output is correct
10 Correct 4 ms 20824 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 20828 KB Output is correct
2 Correct 4 ms 20828 KB Output is correct
3 Correct 4 ms 20828 KB Output is correct
4 Correct 5 ms 20828 KB Output is correct
5 Correct 5 ms 20828 KB Output is correct
6 Correct 5 ms 20828 KB Output is correct
7 Correct 5 ms 20828 KB Output is correct
8 Correct 5 ms 20824 KB Output is correct
9 Correct 6 ms 20828 KB Output is correct
10 Correct 4 ms 20828 KB Output is correct
11 Correct 4 ms 20828 KB Output is correct
12 Correct 5 ms 20828 KB Output is correct
13 Correct 4 ms 20776 KB Output is correct
14 Correct 5 ms 20828 KB Output is correct
15 Correct 5 ms 20828 KB Output is correct
16 Correct 5 ms 20828 KB Output is correct
17 Correct 5 ms 20828 KB Output is correct
18 Correct 6 ms 20672 KB Output is correct
19 Correct 5 ms 20828 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20828 KB Output is correct
2 Correct 5 ms 20824 KB Output is correct
3 Correct 5 ms 20828 KB Output is correct
4 Correct 5 ms 20828 KB Output is correct
5 Correct 5 ms 20828 KB Output is correct
6 Correct 5 ms 20828 KB Output is correct
7 Correct 5 ms 20824 KB Output is correct
8 Correct 4 ms 20840 KB Output is correct
9 Correct 5 ms 20944 KB Output is correct
10 Correct 4 ms 20824 KB Output is correct
11 Correct 5 ms 20828 KB Output is correct
12 Correct 4 ms 20828 KB Output is correct
13 Correct 4 ms 20828 KB Output is correct
14 Correct 5 ms 20828 KB Output is correct
15 Correct 5 ms 20828 KB Output is correct
16 Correct 5 ms 20828 KB Output is correct
17 Correct 5 ms 20828 KB Output is correct
18 Correct 5 ms 20824 KB Output is correct
19 Correct 6 ms 20828 KB Output is correct
20 Correct 4 ms 20828 KB Output is correct
21 Correct 4 ms 20828 KB Output is correct
22 Correct 5 ms 20828 KB Output is correct
23 Correct 4 ms 20776 KB Output is correct
24 Correct 5 ms 20828 KB Output is correct
25 Correct 5 ms 20828 KB Output is correct
26 Correct 5 ms 20828 KB Output is correct
27 Correct 5 ms 20828 KB Output is correct
28 Correct 6 ms 20672 KB Output is correct
29 Correct 5 ms 20828 KB Output is correct
30 Correct 6 ms 20828 KB Output is correct
31 Correct 6 ms 21084 KB Output is correct
32 Correct 6 ms 21084 KB Output is correct
33 Correct 8 ms 21352 KB Output is correct
34 Correct 8 ms 21596 KB Output is correct
35 Correct 12 ms 22364 KB Output is correct
36 Correct 11 ms 22108 KB Output is correct
37 Correct 10 ms 22112 KB Output is correct
38 Correct 24 ms 23380 KB Output is correct
39 Correct 12 ms 22360 KB Output is correct
40 Correct 6 ms 21848 KB Output is correct
41 Correct 7 ms 21848 KB Output is correct
42 Correct 6 ms 21088 KB Output is correct
43 Correct 184 ms 52252 KB Output is correct
44 Correct 145 ms 44156 KB Output is correct
45 Correct 147 ms 43548 KB Output is correct
46 Correct 6 ms 21084 KB Output is correct
47 Correct 7 ms 21072 KB Output is correct
48 Correct 7 ms 21080 KB Output is correct
49 Correct 6 ms 21080 KB Output is correct
50 Correct 6 ms 21084 KB Output is correct
51 Correct 6 ms 21084 KB Output is correct
52 Correct 12 ms 21596 KB Output is correct
53 Correct 7 ms 21340 KB Output is correct
54 Correct 6 ms 21296 KB Output is correct

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 20828 KB Output is correct
2 Correct 5 ms 20824 KB Output is correct
3 Correct 5 ms 20828 KB Output is correct
4 Correct 5 ms 20828 KB Output is correct
5 Correct 5 ms 20828 KB Output is correct
6 Correct 5 ms 20828 KB Output is correct
7 Correct 5 ms 20824 KB Output is correct
8 Correct 4 ms 20840 KB Output is correct
9 Correct 5 ms 20944 KB Output is correct
10 Correct 4 ms 20824 KB Output is correct
11 Correct 5 ms 20828 KB Output is correct
12 Correct 4 ms 20828 KB Output is correct
13 Correct 4 ms 20828 KB Output is correct
14 Correct 5 ms 20828 KB Output is correct
15 Correct 5 ms 20828 KB Output is correct
16 Correct 5 ms 20828 KB Output is correct
17 Correct 5 ms 20828 KB Output is correct
18 Correct 5 ms 20824 KB Output is correct
19 Correct 6 ms 20828 KB Output is correct
20 Correct 4 ms 20828 KB Output is correct
21 Correct 4 ms 20828 KB Output is correct
22 Correct 5 ms 20828 KB Output is correct
23 Correct 4 ms 20776 KB Output is correct
24 Correct 5 ms 20828 KB Output is correct
25 Correct 5 ms 20828 KB Output is correct
26 Correct 5 ms 20828 KB Output is correct
27 Correct 5 ms 20828 KB Output is correct
28 Correct 6 ms 20672 KB Output is correct
29 Correct 5 ms 20828 KB Output is correct
30 Correct 6 ms 20828 KB Output is correct
31 Correct 6 ms 21084 KB Output is correct
32 Correct 6 ms 21084 KB Output is correct
33 Correct 8 ms 21352 KB Output is correct
34 Correct 8 ms 21596 KB Output is correct
35 Correct 12 ms 22364 KB Output is correct
36 Correct 11 ms 22108 KB Output is correct
37 Correct 10 ms 22112 KB Output is correct
38 Correct 24 ms 23380 KB Output is correct
39 Correct 12 ms 22360 KB Output is correct
40 Correct 6 ms 21848 KB Output is correct
41 Correct 7 ms 21848 KB Output is correct
42 Correct 6 ms 21088 KB Output is correct
43 Correct 184 ms 52252 KB Output is correct
44 Correct 145 ms 44156 KB Output is correct
45 Correct 147 ms 43548 KB Output is correct
46 Correct 6 ms 21084 KB Output is correct
47 Correct 7 ms 21072 KB Output is correct
48 Correct 7 ms 21080 KB Output is correct
49 Correct 6 ms 21080 KB Output is correct
50 Correct 6 ms 21084 KB Output is correct
51 Correct 6 ms 21084 KB Output is correct
52 Correct 12 ms 21596 KB Output is correct
53 Correct 7 ms 21340 KB Output is correct
54 Correct 6 ms 21296 KB Output is correct
55 Correct 43 ms 27724 KB Output is correct
56 Correct 384 ms 74032 KB Output is correct
57 Correct 799 ms 125916 KB Output is correct
58 Correct 921 ms 144492 KB Output is correct
59 Execution timed out 2082 ms 282176 KB Time limit exceeded
60 Halted 0 ms 0 KB -