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Submission #238368

# Submission time Handle Problem Language Result Execution time Memory
238368 2020-06-10T22:31:29 Z oscarsierra12 Friend (IOI14_friend) C++14
27 / 100
 10 ms 6016 KB 
#include "friend.h"
#include <bits/stdc++.h>

#define pb    push_back

using namespace std ;

// Find out best sample

const int N = 100010 ;

int confi[N] ;
int dp [N][2];
vector <int> G[N][2] ;

int go ( int u, int flag ) {
    auto &rf = dp[u][flag];
    if ( rf!=-1 ) return rf ;
    if ( flag ) {
        ///take
        int x = confi[u] ;
        for ( auto v:G[u][0] ) x += go( v, 0 ) ;
        for ( auto v:G[u][1] ) x += go( v, 1 ) ;
        rf = x ;
        ///dont take
        x = 0 ;
        for ( auto v:G[u][0] ) x += go(v,1 ) ;
        for ( auto v:G[u][1] ) x += go(v, 1) ;
        rf = max ( rf, x ) ;
    }
    else {
        int x = 0 ;
        for ( auto v:G[u][1] ) x += go ( v, 0 ) ;
        for ( auto v:G[u][0] ) x += go ( v, 1 ) ;
        rf = x ;
    }
    return rf ;
}

int findSample(int n,int confidence[],int host[],int protocol[]){
    for ( int i = 0 ; i < n ; ++i ) confi[i] = confidence[i] ;
    for ( int i = 1 ; i < n ; ++i ) G[host[i]][protocol[i]].push_back ( i ) ;
    memset ( dp,-1,sizeof dp ) ;
    return go(0,1) ;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5888 KB Output is correct
2 Correct 7 ms 5760 KB Output is correct
3 Correct 7 ms 5760 KB Output is correct
4 Correct 7 ms 5760 KB Output is correct
5 Correct 7 ms 5888 KB Output is correct
6 Correct 7 ms 5760 KB Output is correct
7 Correct 7 ms 5760 KB Output is correct
8 Incorrect 8 ms 5760 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5760 KB Output is correct
2 Correct 7 ms 5760 KB Output is correct
3 Correct 8 ms 5888 KB Output is correct
4 Correct 8 ms 5888 KB Output is correct
5 Correct 10 ms 5888 KB Output is correct
6 Correct 9 ms 5760 KB Output is correct
7 Correct 7 ms 5888 KB Output is correct
8 Correct 8 ms 5888 KB Output is correct
9 Correct 8 ms 5888 KB Output is correct
10 Correct 8 ms 5888 KB Output is correct

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 5888 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5888 KB Output is correct
2 Correct 7 ms 5760 KB Output is correct
3 Correct 7 ms 5760 KB Output is correct
4 Correct 7 ms 5760 KB Output is correct
5 Correct 8 ms 6016 KB Output is correct
6 Correct 9 ms 5888 KB Output is correct
7 Correct 7 ms 5760 KB Output is correct
8 Correct 10 ms 5888 KB Output is correct
9 Correct 7 ms 5888 KB Output is correct
10 Correct 9 ms 5760 KB Output is correct
11 Correct 8 ms 5888 KB Output is correct
12 Correct 8 ms 5888 KB Output is correct
13 Correct 9 ms 5888 KB Output is correct
14 Correct 8 ms 5888 KB Output is correct
15 Correct 8 ms 5888 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5888 KB Output is correct
2 Correct 7 ms 5760 KB Output is correct
3 Correct 7 ms 5760 KB Output is correct
4 Correct 7 ms 5760 KB Output is correct
5 Correct 7 ms 5760 KB Output is correct
6 Correct 8 ms 5760 KB Output is correct
7 Correct 8 ms 5760 KB Output is correct
8 Incorrect 8 ms 5760 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5760 KB Output is correct
2 Correct 7 ms 5760 KB Output is correct
3 Incorrect 7 ms 5760 KB Output isn't correct
4 Halted 0 ms 0 KB -