oj.uz

Submission #242261

# Submission time Handle Problem Language Result Execution time Memory
242261 2020-06-27T07:50:12 Z dwsc Magic Tree (CEOI19_magictree) C++14
0 / 100
 2000 ms 798840 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int n,m,k;
vector<int> adj[100010];
int ripe[100010];
int weight[100010];
int memo[100010][1010];
int dp(int u,int j){
    if (memo[u][j] != -1) return memo[u][j];
    int s1 = (ripe[u] <= j)?weight[u]:0,s2 = 0;
    for (int i = 0; i < adj[u].size(); i++){
        int v = adj[u][i];
        s1 += dp(v,ripe[u]),s2 += dp(v,j);
    }
    return memo[u][j] = max(s1,s2);
}
main(){
    cin >> n >> m >> k;
    for (int i = 2; i <= n; i++){
        int p;
        cin >> p;
        adj[p].push_back(i);
    }
    vector<int> temp;
    temp.push_back(0);
    for (int i = 0; i < m; i++){
        int v,d,w;
        cin >> v >> d >> w;
        ripe[v] = d;
        weight[v] = w;
        temp.push_back(d);
    }
    sort(temp.begin(),temp.end());
    temp.erase(unique(temp.begin(),temp.end()),temp.end());
    for (int i = 1; i <= n; i++) ripe[i] = lower_bound(temp.begin(),temp.end(),ripe[i])-temp.begin();
    //for (int i = 1; i <= n; i++) cout << ripe[i] << "\n";
    for (int i = 1; i <= n; i++) for (int j = 1; j <= temp.size(); j++) memo[i][j] = -1;
    cout << dp(1,temp.size());
}

Compilation message

magictree.cpp: In function 'long long int dp(long long int, long long int)':
magictree.cpp:12:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < adj[u].size(); i++){
                     ~~^~~~~~~~~~~~~~~
magictree.cpp: At global scope:
magictree.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
magictree.cpp: In function 'int main()':
magictree.cpp:38:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i <= n; i++) for (int j = 1; j <= temp.size(); j++) memo[i][j] = -1;
                                                  ~~^~~~~~~~~~~~~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2688 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 7 ms 2816 KB Output is correct
4 Correct 6 ms 2816 KB Output is correct
5 Incorrect 6 ms 2816 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2129 ms 762228 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 14 ms 9856 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 374 ms 412204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2688 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 7 ms 2816 KB Output is correct
4 Correct 6 ms 2816 KB Output is correct
5 Incorrect 6 ms 2816 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 161656 KB Output is correct
2 Correct 472 ms 797408 KB Output is correct
3 Correct 456 ms 797304 KB Output is correct
4 Correct 473 ms 797432 KB Output is correct
5 Correct 426 ms 796008 KB Output is correct
6 Incorrect 1189 ms 798840 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2688 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 7 ms 2816 KB Output is correct
4 Correct 6 ms 2816 KB Output is correct
5 Incorrect 6 ms 2816 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2688 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 7 ms 2816 KB Output is correct
4 Correct 6 ms 2816 KB Output is correct
5 Incorrect 6 ms 2816 KB Output isn't correct
6 Halted 0 ms 0 KB -