oj.uz

Submission #43918

# Submission time Handle Problem Language Result Execution time Memory
43918 2018-03-28T06:51:31 Z Waschbar Paprike (COI18_paprike) C++17
100 / 100
 207 ms 17712 KB 
#include <bits/stdc++.h>
#define ff first
#define ss second
using namespace std;
 
const int MAXN = 1e5;
 
int n, k, ans;
int sp[MAXN+1];
vector < vector < int > > g(MAXN+1);
 
long long DFS(int f, int p) {
        long long cnt = 0;
        vector < long long > v;
        cnt = sp[f];
 
        for(int i = 0; i < g[f].size(); i++) {
            int to = g[f][i];
            if(to == p) continue;
            long long x = DFS(to,f);
            cnt += x;
            v.push_back(x);
        }
 
        if(cnt <= k) return cnt;
 
        cnt = sp[f];
        sort(v.begin(),v.end());
        ans += v.size();
        for(int i = 0; i < v.size(); i++) {
            if(cnt+v[i] <= k) {cnt += v[i]; ans--;}
            else break;
        }
 
        return cnt;
}
 
int main() {
 
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
 
    cin >> n >> k;
 
    for(int i = 1; i <= n; i++)
        cin >> sp[i];
 
    for(int i = 1; i < n; i++) {
        int x, y;
        cin >> x >> y;
        g[x].push_back(y);
        g[y].push_back(x);
    }
 
    DFS(1,0);
 
    cout << ans << endl;
 
    return 0;
}

Compilation message

paprike.cpp: In function 'long long int DFS(int, int)':
paprike.cpp:17:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < g[f].size(); i++) {
                        ~~^~~~~~~~~~~~~
paprike.cpp:30:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < v.size(); i++) {
                        ~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 3 ms 2680 KB Output is correct
3 Correct 3 ms 2728 KB Output is correct
4 Correct 3 ms 2752 KB Output is correct
5 Correct 4 ms 2800 KB Output is correct
6 Correct 4 ms 2980 KB Output is correct
7 Correct 4 ms 2980 KB Output is correct
8 Correct 3 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 3 ms 2980 KB Output is correct
11 Correct 3 ms 2980 KB Output is correct
12 Correct 3 ms 2980 KB Output is correct
13 Correct 4 ms 2980 KB Output is correct
14 Correct 4 ms 2980 KB Output is correct
15 Correct 3 ms 2980 KB Output is correct
16 Correct 4 ms 2980 KB Output is correct
17 Correct 3 ms 2980 KB Output is correct
18 Correct 4 ms 2980 KB Output is correct
19 Correct 3 ms 2980 KB Output is correct
20 Correct 4 ms 2980 KB Output is correct
21 Correct 3 ms 2996 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 17596 KB Output is correct
2 Correct 158 ms 17700 KB Output is correct
3 Correct 149 ms 17700 KB Output is correct
4 Correct 150 ms 17700 KB Output is correct
5 Correct 153 ms 17700 KB Output is correct
6 Correct 148 ms 17712 KB Output is correct
7 Correct 145 ms 17712 KB Output is correct
8 Correct 127 ms 17712 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 3 ms 2680 KB Output is correct
3 Correct 3 ms 2728 KB Output is correct
4 Correct 3 ms 2752 KB Output is correct
5 Correct 4 ms 2800 KB Output is correct
6 Correct 4 ms 2980 KB Output is correct
7 Correct 4 ms 2980 KB Output is correct
8 Correct 3 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 3 ms 2980 KB Output is correct
11 Correct 3 ms 2980 KB Output is correct
12 Correct 3 ms 2980 KB Output is correct
13 Correct 4 ms 2980 KB Output is correct
14 Correct 4 ms 2980 KB Output is correct
15 Correct 3 ms 2980 KB Output is correct
16 Correct 4 ms 2980 KB Output is correct
17 Correct 3 ms 2980 KB Output is correct
18 Correct 4 ms 2980 KB Output is correct
19 Correct 3 ms 2980 KB Output is correct
20 Correct 4 ms 2980 KB Output is correct
21 Correct 3 ms 2996 KB Output is correct
22 Correct 4 ms 17712 KB Output is correct
23 Correct 5 ms 17712 KB Output is correct
24 Correct 4 ms 17712 KB Output is correct
25 Correct 4 ms 17712 KB Output is correct
26 Correct 5 ms 17712 KB Output is correct
27 Correct 5 ms 17712 KB Output is correct
28 Correct 5 ms 17712 KB Output is correct
29 Correct 5 ms 17712 KB Output is correct
30 Correct 5 ms 17712 KB Output is correct
31 Correct 5 ms 17712 KB Output is correct
32 Correct 5 ms 17712 KB Output is correct
33 Correct 5 ms 17712 KB Output is correct
34 Correct 4 ms 17712 KB Output is correct
35 Correct 5 ms 17712 KB Output is correct
36 Correct 4 ms 17712 KB Output is correct
37 Correct 5 ms 17712 KB Output is correct
38 Correct 5 ms 17712 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 3 ms 2680 KB Output is correct
3 Correct 3 ms 2728 KB Output is correct
4 Correct 3 ms 2752 KB Output is correct
5 Correct 4 ms 2800 KB Output is correct
6 Correct 4 ms 2980 KB Output is correct
7 Correct 4 ms 2980 KB Output is correct
8 Correct 3 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 3 ms 2980 KB Output is correct
11 Correct 3 ms 2980 KB Output is correct
12 Correct 3 ms 2980 KB Output is correct
13 Correct 4 ms 2980 KB Output is correct
14 Correct 4 ms 2980 KB Output is correct
15 Correct 3 ms 2980 KB Output is correct
16 Correct 4 ms 2980 KB Output is correct
17 Correct 3 ms 2980 KB Output is correct
18 Correct 4 ms 2980 KB Output is correct
19 Correct 3 ms 2980 KB Output is correct
20 Correct 4 ms 2980 KB Output is correct
21 Correct 3 ms 2996 KB Output is correct
22 Correct 150 ms 17596 KB Output is correct
23 Correct 158 ms 17700 KB Output is correct
24 Correct 149 ms 17700 KB Output is correct
25 Correct 150 ms 17700 KB Output is correct
26 Correct 153 ms 17700 KB Output is correct
27 Correct 148 ms 17712 KB Output is correct
28 Correct 145 ms 17712 KB Output is correct
29 Correct 127 ms 17712 KB Output is correct
30 Correct 4 ms 17712 KB Output is correct
31 Correct 5 ms 17712 KB Output is correct
32 Correct 4 ms 17712 KB Output is correct
33 Correct 4 ms 17712 KB Output is correct
34 Correct 5 ms 17712 KB Output is correct
35 Correct 5 ms 17712 KB Output is correct
36 Correct 5 ms 17712 KB Output is correct
37 Correct 5 ms 17712 KB Output is correct
38 Correct 5 ms 17712 KB Output is correct
39 Correct 5 ms 17712 KB Output is correct
40 Correct 5 ms 17712 KB Output is correct
41 Correct 5 ms 17712 KB Output is correct
42 Correct 4 ms 17712 KB Output is correct
43 Correct 5 ms 17712 KB Output is correct
44 Correct 4 ms 17712 KB Output is correct
45 Correct 5 ms 17712 KB Output is correct
46 Correct 5 ms 17712 KB Output is correct
47 Correct 147 ms 17712 KB Output is correct
48 Correct 146 ms 17712 KB Output is correct
49 Correct 149 ms 17712 KB Output is correct
50 Correct 168 ms 17712 KB Output is correct
51 Correct 207 ms 17712 KB Output is correct
52 Correct 169 ms 17712 KB Output is correct
53 Correct 170 ms 17712 KB Output is correct
54 Correct 167 ms 17712 KB Output is correct
55 Correct 154 ms 17712 KB Output is correct
56 Correct 150 ms 17712 KB Output is correct
57 Correct 148 ms 17712 KB Output is correct