oj.uz

Submission #716420

# Submission time Handle Problem Language Result Execution time Memory
716420 2023-03-30T05:09:55 Z amir Paths (BOI18_paths) C++17
53 / 100
 141 ms 30668 KB 
/*
<< in the name of ALLAH >>
*/

#include <bits/stdc++.h>

//#pragma strings(readonly)
//#pragma variable(var_name,NORENT)
//#pragma GCC optimize("O3,no-stack-protector,unroll-loops,Ofast")
//#pragma GCC target("avx2,fma")
//#pragma GCC optimize("Ofast")

using namespace std;

typedef long long int ll ;
typedef pair<int , int> pii ;
typedef pair<ll , ll> pll ;
typedef double db ;

#define ps push_back
#define pb pop_back
#define mp make_pair
#define all(x) x.begin() , x.end() 
#define sz(x) (int)x.size() 
#define debug(a) cout<<"debug: "<<(#a)<<" = "<<a<<'\n'
#define debugAr(a) cout << "Array " << (#a) << " :\n" ;for (int TMP : a) cout << TMP << " " ; cout << '\n' 
#define noo(x) (int)__builtin_popcount(x)
#define lastone(x) (x)&(-x)

const int maxn = 1e5 + 5 , maxk = 5 , maxb = 37 ;
int n , k  , m;
int col[maxn] ;
ll dp[maxb][maxn] ;

vector<int > adj[maxn] ;





int main()
{
    ios::sync_with_stdio(false) ; cin.tie(NULL) ; cout.tie(NULL) ;
    //mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); 
    
    cin >> n >> m >> k ;
    
    for (int i = 1 ;i <= n ; i ++ ) cin >> col[i] , col[i] -- ;
    
    for (int i = 0 ;i < m ; i ++){
    	int u , v ;
    	cin >> u >> v ;
    	adj[u].ps(v) ;
    	adj[v].ps(u) ;
	}
	
	for (int i = 1 ; i <= n ; i++) adj[i].ps(0 ) ;
    
    int MX = (1 << k ) ;
    
    dp[0][0] = 1 ;
    
    for (int mask = 1 ; mask < MX ; mask ++){
    	for (int v = 1 ; v <= n ; v++){
    		if (mask & (1 << col[v])){
    			int mask2 = mask ^ (1 << col[v]) ;
    			for (int u : adj[v]){
    				dp[mask][v] += dp[mask2][u] ;
				}
			}
		}
	}
    
    ll ans = 0 ;
    
    for (int i = 1 ; i < MX ; i++){
    	if (noo(i) < 2 ) continue ;
    	for (int v = 1 ; v <= n ; v++) ans += dp[i][v] ;
	}
    cout << ans << '\n' ;
    
}

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2780 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 1 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 6732 KB Output is correct
2 Correct 44 ms 6304 KB Output is correct
3 Incorrect 6 ms 2948 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2780 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 1 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 56 ms 6732 KB Output is correct
12 Correct 44 ms 6304 KB Output is correct
13 Incorrect 6 ms 2948 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2772 KB Output is correct
2 Correct 17 ms 4008 KB Output is correct
3 Correct 15 ms 3792 KB Output is correct
4 Correct 57 ms 11860 KB Output is correct
5 Correct 48 ms 11964 KB Output is correct
6 Correct 141 ms 30604 KB Output is correct
7 Correct 16 ms 3932 KB Output is correct
8 Correct 88 ms 18084 KB Output is correct
9 Correct 62 ms 18256 KB Output is correct
10 Correct 81 ms 17424 KB Output is correct
11 Correct 55 ms 17260 KB Output is correct
12 Correct 67 ms 22220 KB Output is correct
13 Correct 55 ms 16084 KB Output is correct
14 Correct 117 ms 30668 KB Output is correct
15 Correct 107 ms 30572 KB Output is correct
16 Correct 2 ms 2764 KB Output is correct
17 Correct 2 ms 2772 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2772 KB Output is correct
22 Correct 2 ms 2772 KB Output is correct
23 Correct 2 ms 2772 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct