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답안 #1109969

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1109969 2024-11-08T09:22:56 Z ljtunas Magic Tree (CEOI19_magictree) C++17
100 / 100
 119 ms 96184 KB 
// author : anhtun_hi , nqg
#include <bits/stdc++.h>
#define ll long long
#define ii pair<ll, ll>
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define reset(h, v)    memset(h, v, sizeof h)
#define Forv(i, a)     for(auto& i : a)
#define For(i, a, b)   for(int i = a; i <= b; ++i)
#define Ford(i, a, b)  for(int i = a; i >= b; --i)
#define c_bit(i)     __builtin_popcountll(i)
#define Bit(mask, i)    ((mask >> i) & 1LL)
#define onbit(mask, i)  ((mask) bitor (1LL << i))
#define offbit(mask, i) ((mask) &~ (1LL << i))
using namespace std;
namespace std {
    template <typename T, int D>
    struct _vector : public vector <_vector <T, D - 1>> {
        static_assert(D >= 1, "Dimension must be positive!");
        template <typename... Args>
        _vector(int n = 0, Args... args) : vector <_vector <T, D - 1>> (n, _vector <T, D - 1> (args...)) {}
    };
    template <typename T> struct _vector <T, 1> : public vector <T> {
        _vector(int n = 0, const T& val = T()) : vector <T> (n, val) {}
    };
    template <class A, class B> bool minimize(A &a, B b){return a > b ? a = b, true : false;}
    template <class A, class B> bool maximize(A &a, B b){return a < b ? a = b, true : false;}
}
const int dx[] = {0, 0, +1, -1}, dy[] = {-1, +1, 0, 0}, LOG = 20, base = 311, inf = 1e9 + 5;
const int MAXN = 1e6 + 5;
const  ll  mod = 1e9 + 7;
const  ll   oo = 1e18;

//#define int long long
int n, m, k; vector<int> g[MAXN];

ii c[MAXN];

map<int, ll> mp[MAXN]; bool ok[MAXN];

void dfs(int u, int par){
    Forv(v, g[u]) if(v ^ par){
        dfs(v, u);
        if(mp[u].size() < mp[v].size()) swap(mp[u], mp[v]);
        Forv(tmp, mp[v]) mp[u][tmp.fi] += tmp.se;
        mp[v].clear();
    }
    if (ok[u]){
        auto [day, w] = c[u];
        mp[u][day] += w;
        auto it = mp[u].upper_bound(day);
        while (it != mp[u].end()){
            if (it->se > w){ it->se -= w; break; }
            auto cur = it; ++it;
            w -= cur -> se;
            mp[u].erase(cur);
        }
    }
}

void Solve() {
    cin >> n >> m >> k;
    For(i, 2, n){
        int p; cin >> p; g[p].push_back(i);
    }
    For(i, 1, m){
        int node, day, w;
        cin >> node >> day >> w;
        c[node] = {day, w};
        ok[node] = true;
    }
    dfs(1, 0);
    ll ans = 0;
    for(auto [_, w] : mp[1]) ans += w;
    cout << ans << '\n';
}

int32_t main() {
    cin.tie(0) -> sync_with_stdio(0);
    if(fopen("CEOI19_magictree.inp", "r")) {
        freopen("CEOI19_magictree.inp", "r", stdin);
        freopen("CEOI19_magictree.out", "w", stdout);
    }

    int t = 1;
//    cin >> t;

    for (int test = 1; test <= t; test++) {
        Solve();
    }
    return 0;
}

Compilation message

magictree.cpp: In function 'int32_t main()':
magictree.cpp:82:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |         freopen("CEOI19_magictree.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
magictree.cpp:83:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |         freopen("CEOI19_magictree.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 73552 KB Output is correct
2 Correct 17 ms 73460 KB Output is correct
3 Correct 22 ms 73552 KB Output is correct
4 Correct 25 ms 73544 KB Output is correct
5 Correct 28 ms 73544 KB Output is correct
6 Correct 30 ms 73552 KB Output is correct
7 Correct 34 ms 73544 KB Output is correct
8 Correct 29 ms 73348 KB Output is correct
9 Correct 29 ms 73552 KB Output is correct

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 74 ms 78484 KB Output is correct
2 Correct 63 ms 83784 KB Output is correct
3 Correct 119 ms 80572 KB Output is correct
4 Correct 90 ms 79100 KB Output is correct
5 Correct 90 ms 80944 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 73544 KB Output is correct
2 Correct 26 ms 73552 KB Output is correct
3 Correct 25 ms 73576 KB Output is correct
4 Correct 72 ms 92232 KB Output is correct
5 Correct 93 ms 96184 KB Output is correct
6 Correct 86 ms 92484 KB Output is correct

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 76612 KB Output is correct
2 Correct 68 ms 76764 KB Output is correct
3 Correct 63 ms 83272 KB Output is correct
4 Correct 49 ms 75720 KB Output is correct
5 Correct 79 ms 92232 KB Output is correct

Subtask #5
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 73552 KB Output is correct
2 Correct 17 ms 73460 KB Output is correct
3 Correct 22 ms 73552 KB Output is correct
4 Correct 25 ms 73544 KB Output is correct
5 Correct 28 ms 73544 KB Output is correct
6 Correct 30 ms 73552 KB Output is correct
7 Correct 34 ms 73544 KB Output is correct
8 Correct 29 ms 73348 KB Output is correct
9 Correct 29 ms 73552 KB Output is correct
10 Correct 72 ms 76880 KB Output is correct
11 Correct 73 ms 76616 KB Output is correct
12 Correct 63 ms 83272 KB Output is correct
13 Correct 54 ms 75728 KB Output is correct
14 Correct 77 ms 94280 KB Output is correct

Subtask #6
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 74056 KB Output is correct
2 Correct 54 ms 77128 KB Output is correct
3 Correct 68 ms 77136 KB Output is correct
4 Correct 59 ms 77404 KB Output is correct
5 Correct 40 ms 75720 KB Output is correct
6 Correct 51 ms 79688 KB Output is correct
7 Correct 47 ms 83784 KB Output is correct

Subtask #7
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 73552 KB Output is correct
2 Correct 17 ms 73460 KB Output is correct
3 Correct 22 ms 73552 KB Output is correct
4 Correct 25 ms 73544 KB Output is correct
5 Correct 28 ms 73544 KB Output is correct
6 Correct 30 ms 73552 KB Output is correct
7 Correct 34 ms 73544 KB Output is correct
8 Correct 29 ms 73348 KB Output is correct
9 Correct 29 ms 73552 KB Output is correct
10 Correct 28 ms 73544 KB Output is correct
11 Correct 26 ms 73552 KB Output is correct
12 Correct 25 ms 73576 KB Output is correct
13 Correct 72 ms 92232 KB Output is correct
14 Correct 93 ms 96184 KB Output is correct
15 Correct 86 ms 92484 KB Output is correct
16 Correct 72 ms 76880 KB Output is correct
17 Correct 73 ms 76616 KB Output is correct
18 Correct 63 ms 83272 KB Output is correct
19 Correct 54 ms 75728 KB Output is correct
20 Correct 77 ms 94280 KB Output is correct
21 Correct 37 ms 74320 KB Output is correct
22 Correct 68 ms 77192 KB Output is correct
23 Correct 76 ms 78916 KB Output is correct
24 Correct 101 ms 80064 KB Output is correct
25 Correct 68 ms 79304 KB Output is correct
26 Correct 82 ms 83224 KB Output is correct
27 Correct 80 ms 84848 KB Output is correct

Subtask #8
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 73552 KB Output is correct
2 Correct 17 ms 73460 KB Output is correct
3 Correct 22 ms 73552 KB Output is correct
4 Correct 25 ms 73544 KB Output is correct
5 Correct 28 ms 73544 KB Output is correct
6 Correct 30 ms 73552 KB Output is correct
7 Correct 34 ms 73544 KB Output is correct
8 Correct 29 ms 73348 KB Output is correct
9 Correct 29 ms 73552 KB Output is correct
10 Correct 74 ms 78484 KB Output is correct
11 Correct 63 ms 83784 KB Output is correct
12 Correct 119 ms 80572 KB Output is correct
13 Correct 90 ms 79100 KB Output is correct
14 Correct 90 ms 80944 KB Output is correct
15 Correct 28 ms 73544 KB Output is correct
16 Correct 26 ms 73552 KB Output is correct
17 Correct 25 ms 73576 KB Output is correct
18 Correct 72 ms 92232 KB Output is correct
19 Correct 93 ms 96184 KB Output is correct
20 Correct 86 ms 92484 KB Output is correct
21 Correct 77 ms 76612 KB Output is correct
22 Correct 68 ms 76764 KB Output is correct
23 Correct 63 ms 83272 KB Output is correct
24 Correct 49 ms 75720 KB Output is correct
25 Correct 79 ms 92232 KB Output is correct
26 Correct 72 ms 76880 KB Output is correct
27 Correct 73 ms 76616 KB Output is correct
28 Correct 63 ms 83272 KB Output is correct
29 Correct 54 ms 75728 KB Output is correct
30 Correct 77 ms 94280 KB Output is correct
31 Correct 35 ms 74056 KB Output is correct
32 Correct 54 ms 77128 KB Output is correct
33 Correct 68 ms 77136 KB Output is correct
34 Correct 59 ms 77404 KB Output is correct
35 Correct 40 ms 75720 KB Output is correct
36 Correct 51 ms 79688 KB Output is correct
37 Correct 47 ms 83784 KB Output is correct
38 Correct 37 ms 74320 KB Output is correct
39 Correct 68 ms 77192 KB Output is correct
40 Correct 76 ms 78916 KB Output is correct
41 Correct 101 ms 80064 KB Output is correct
42 Correct 68 ms 79304 KB Output is correct
43 Correct 82 ms 83224 KB Output is correct
44 Correct 80 ms 84848 KB Output is correct
45 Correct 43 ms 74832 KB Output is correct
46 Correct 78 ms 78628 KB Output is correct
47 Correct 87 ms 80716 KB Output is correct
48 Correct 109 ms 82760 KB Output is correct
49 Correct 81 ms 81352 KB Output is correct
50 Correct 90 ms 86088 KB Output is correct
51 Correct 98 ms 87464 KB Output is correct