oj.uz

Submission #798370

# Submission time Handle Problem Language Result Execution time Memory
798370 2023-07-30T16:07:12 Z Khizri Friend (IOI14_friend) C++17
27 / 100
 117 ms 65536 KB 
#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
const int mxn=1005;
int n,arr[mxn],rel[mxn][mxn],ans=0,odd=0,even=0,dp[mxn][2];
vector<int>vt[mxn];
void dfs(int u,int p,int dep){
    if(dep%2==0){
        even+=arr[u];
    }
    else{
        odd+=arr[u];
    }
    for(int v:vt[u]){
        if(v!=p){
            dfs(v,u,dep+1);
        }
    }
}
int findSample(int N,int confidence[],int host[],int protocol[]){
	n=N;
    for(int i=0;i<n;i++){
        arr[i+1]=confidence[i];
    }
    bool task2=true,task3=true,task4=true;
    for(int i=1;i<n;i++){
        int type=protocol[i];
        if(type!=1) task2=false;
        if(type!=2) task3=false;
        if(type!=0) task4=false;
    }
    if(task2){
        int mx=0;
        for(int i=1;i<=n;i++){
            mx+=arr[i];
        }
        return mx;
    }
    if(task3){
        int mx=0;
        for(int i=1;i<=n;i++){
            mx=max(mx,arr[i]);
        }
        return mx;
    }
    for(int i=1;i<n;i++){
        int node=host[i]+1;
        int type=protocol[i];
        if(type==0){
            vt[node].pb(i+1);
            vt[i+1].pb(node);
        }
        else if(type==1){
            int sz=vt[node].size();
            for(int j=0;j<sz;j++){
                int v=vt[node][j];
                vt[v].pb(i+1);
                vt[i+1].pb(v);
            }
        }
        else{
            int sz=vt[node].size();
            for(int j=0;j<sz;j++){
                int v=vt[node][j];
                vt[v].pb(i+1);
                vt[i+1].pb(v);
            }
            vt[node].pb(i+1);
            vt[i+1].pb(node);
        }
    }
    if(task4){
        dfs(1,-1,0);
        return max(even,odd);
    }
    for(int i=1;i<=n;i++){
        for(int v:vt[i]){
            rel[i][v]=1;
        }
    }
    ans=0;
    for(int mask=1;mask<(1<<n);mask++){
        vector<int>v;
        int sum=0;
        for(int i=0;i<n;i++){
            if(mask&(1<<i)){
                v.pb(i+1);
                sum+=arr[i+1];
            }
        }
        bool ok=true;
        for(int i=0;i<v.size();i++){
            for(int j=i+1;j<v.size();j++){
                if(rel[v[i]][v[j]]){
                    ok=false;
                }
            }
        }
        if(ok) ans=max(ans,sum);
    }
    return ans;
}
// g++ friend.cpp grader.cpp ; .\a.exe
/*
6
13 3 6 20 10 15
0 0
0 1
1 2
2 1
0 0
*/

Compilation message

friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:103:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |         for(int i=0;i<v.size();i++){
      |                     ~^~~~~~~~~
friend.cpp:104:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |             for(int j=i+1;j<v.size();j++){
      |                           ~^~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 260 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 328 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Incorrect 1 ms 340 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Incorrect 1 ms 2004 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 324 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 268 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Runtime error 117 ms 65536 KB Execution killed with signal 9
13 Halted 0 ms 0 KB -