oj.uz

Submission #582581

# Submission time Handle Problem Language Result Execution time Memory
582581 2022-06-24T06:20:22 Z 반딧불(#8370) Magic Tree (CEOI19_magictree) C++17
34 / 100
 2000 ms 54468 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct segTree{
    ll tree[400002];

    void update(int i, int l, int r, int x, ll v){
        if(l==r){
            tree[i] = max(tree[i], v);
            return;
        }
        int m = (l+r)>>1;
        if(x<=m) update(i*2, l, m, x, v);
        else update(i*2+1, m+1, r, x, v);
        tree[i] = max(tree[i*2], tree[i*2+1]);
    }

    ll query(int i, int l, int r, int s, int e){
        if(r<s || e<l) return 0;
        if(s<=l && r<=e) return tree[i];
        int m = (l+r)>>1;
        return max(query(i*2, l, m, s, e), query(i*2+1, m+1, r, s, e));
    }
} tree;

struct Fruit{
    int v, d; ll w;
    Fruit(){}
    Fruit(int v, int d, ll w): v(v), d(d), w(w){}
};

int n, m, k;
int par[100002];
vector<int> child[100002];
int state[100002];
Fruit fruit[100002];

ll weight[100002][25];
ll DP[100002][25];

void dfs(int x){
    for(int i=1; i<=k; i++) DP[x][i] = weight[x][i];
    for(auto y: child[x]){
        dfs(y);
        for(int i=1; i<=k; i++){
            ll best = 0;
            for(int j=1; j<=i; j++){
                best = max(best, DP[y][j]);
            }
            DP[x][i] += best;
        }
    }
}

int main(){
    scanf("%d %d %d", &n, &m, &k);
    for(int i=2; i<=n; i++){
        scanf("%d", &par[i]);
        child[par[i]].push_back(i);
    }

    for(int i=1; i<=m; i++){
        int v, d, w;
        scanf("%d %d %d", &v, &d, &w);
        fruit[i] = Fruit(v, d, w);
        weight[v][d] = w;
    }

    dfs(1);

    printf("%lld", *max_element(DP[1], DP[1]+k+1));
}

Compilation message

magictree.cpp: In function 'int main()':
magictree.cpp:59:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |     scanf("%d %d %d", &n, &m, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
magictree.cpp:61:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |         scanf("%d", &par[i]);
      |         ~~~~~^~~~~~~~~~~~~~~
magictree.cpp:67:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |         scanf("%d %d %d", &v, &d, &w);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct

Subtask #2
0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2040 ms 25144 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 563 ms 3192 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 45124 KB Output is correct
2 Correct 79 ms 45172 KB Output is correct
3 Correct 83 ms 49108 KB Output is correct
4 Correct 64 ms 44040 KB Output is correct
5 Correct 70 ms 54468 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 114 ms 45196 KB Output is correct
11 Correct 97 ms 45208 KB Output is correct
12 Correct 119 ms 49140 KB Output is correct
13 Correct 80 ms 44008 KB Output is correct
14 Correct 104 ms 54428 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2092 ms 7216 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Incorrect 563 ms 3192 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Execution timed out 2040 ms 25144 KB Time limit exceeded
11 Halted 0 ms 0 KB -