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Submission #932860

# Submission time Handle Problem Language Result Execution time Memory
932860 2024-02-24T10:20:41 Z parlimoos Skyscraper (JOI16_skyscraper) C++14
0 / 100
 2000 ms 96568 KB 
//Be Name KHODA
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
#define pb push_back
#define pp pop_back
#define lb lower_bound
#define ub upper_bound
#define cl clear
#define bg begin
#define arr(x) array<int , x>
#define endl '\n'

const int MOD = int(1e9) + 7;

int n , k;
vector<int> a;
int dp[(1 << 14)][15][100];

void Add(int &e , int b){
    e += b;
    if(e > MOD) e -= MOD;
    if(e < 0) e += MOD;
}
int Mul(int a , int b){
    return (1ll * a * b) % MOD;
}
int Pow(int a , int b){
    int res = 1;
    while(b){
        if((b & 1)) res = Mul(res , a);
        a = Mul(a , a) , b >>= 1;
    }
    return res;
}
void f(){
    for(int msk = 0 ; msk < (1 << 14) ; msk++){
        if(msk == 0){
            for(int bit = 0 ; bit < n ; bit++){
                dp[msk | (1 << bit)][bit + 1][0] = 1;
            }
            continue;
        }
        for(int bit0 = 0 ; bit0 < n ; bit0++){
            if(((msk >> bit0) & 1)) continue;
            for(int bit1 = 0 ; bit1 < n ; bit1++){
                if(!((msk >> bit1) & 1)) continue;
                for(int sm = 0 ; sm < k ; sm++){
                    Add(dp[msk | (1 << bit0)][bit0 + 1][sm + abs(a[bit0] - a[bit1])] , dp[msk][bit1 + 1][sm]);
                }
            }
        }
    }
}

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> k;
    for(int i = 0 ; i < n ; i++){
        int d;
        cin >> d;
        a.pb(d);
    }
    f();
    int o = 0;
    for(int end = 1 ; end <= n ; end++){
        for(int sm = 0 ; sm <= k ; sm++){
            Add(o , dp[(1 << n) - 1][end][sm]);
        }
    }
    cout << o;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 9 ms 18776 KB Output is correct
3 Correct 17 ms 38232 KB Output is correct
4 Incorrect 56 ms 83536 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 96088 KB Output is correct
2 Execution timed out 2047 ms 96568 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 9 ms 18776 KB Output is correct
3 Correct 17 ms 38232 KB Output is correct
4 Incorrect 56 ms 83536 KB Output isn't correct
5 Halted 0 ms 0 KB -