oj.uz

Submission #225777

# Submission time Handle Problem Language Result Execution time Memory
225777 2020-04-21T14:55:38 Z aloo123 Asceticism (JOI18_asceticism) C++14
49 / 100
 166 ms 94456 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define vll vector<ll>
#define endl "\n"
#define pll pair<ll,ll>
#define all(x) (x).begin() , (x).end()
#define f first
#define s second
#define pr(x) cout<<x<<endl;
#define pr2(x,y) cout<<x<<" "<<y<<endl;
#define pr3(x,y,z) cout<<x<<" "<<y<<endl;
#define prv(v) for(auto x:v) cout<<x<<" ";
#define ffs fflush(stdout);
using namespace std;
 
const ll N =(2e5+5);
const ll MOD = 1e9+7;
const ll INF = LLONG_MAX;
const ll LOG = 29;
#define PI 3.141592653589793238 
  
double circumference(double r) 
{ 
    double cir = 2.0;
    cir*=PI;
    cir*=r; 
    return cir; 
} 
ll m;
long long binpow(long long a, long long b) {
    a%=MOD;    
    long long res = 1;
    while (b > 0) {
        if (b & 1)
            res = (res * a)%MOD;
        a = (a * a)%MOD;
 
        
        b >>= 1;
    }
    res%=MOD;
    return res;
}
ll t[3005][3005];
void solve(){
    
    ll n,k;
    cin>>n>>k;

    t[1][1] = 1;
    // for(int i =0;i<=n;i++){
    //     for(int j =0;j<=n;j++){
    //         t[i][j] = 1;
    //     }
    // }
    for(ll i =1;i<=n;i++){
        for(ll j = 1;j<=i;j++){
            if(i==1&&j==1)continue;
            ll xd = t[i-1][j]%MOD;
            xd = (xd * j)%MOD;
            if(xd < 0) xd += MOD;
            t[i][j] = (t[i][j] + xd)%MOD;
            if(t[i][j]<0)t[i][j]+=MOD;
            //(i-j+1) * t[i-1][j-1]
            xd = (i-j+1);
            xd  = (xd * t[i-1][j-1])%MOD;
            t[i][j] = (t[i][j] + xd)%MOD;
            if(t[i][j]<0)t[i][j]+=MOD;
        }
    }
    // for(int i =1;i<=n;i++){
    //     for(int j =1;j<=n;j++){
    //         cout<<t[i][j]<<" ";
    //     }
    //     cout<<endl;
    // }
    cout<<t[n][k]<<endl;



}
 
 
int main(){
    ios_base::sync_with_stdio(0);
     cin.tie(NULL);
     
    ll t=1;
    while(t--){
        solve();
    }
     
 
 
    return 0;     
    
        
}//42364286 418930126
// (3,2)
// (0,0) -> (-1,0) -> (-1,2) -> (3,2)

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 768 KB Output is correct
12 Correct 6 ms 1920 KB Output is correct
13 Correct 7 ms 1920 KB Output is correct
14 Correct 6 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct
16 Correct 6 ms 1920 KB Output is correct
17 Correct 6 ms 1280 KB Output is correct
18 Correct 6 ms 1664 KB Output is correct
19 Correct 5 ms 896 KB Output is correct
20 Correct 5 ms 384 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 768 KB Output is correct
12 Correct 6 ms 1920 KB Output is correct
13 Correct 7 ms 1920 KB Output is correct
14 Correct 6 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct
16 Correct 6 ms 1920 KB Output is correct
17 Correct 6 ms 1280 KB Output is correct
18 Correct 6 ms 1664 KB Output is correct
19 Correct 5 ms 896 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 18 ms 8320 KB Output is correct
22 Correct 16 ms 8320 KB Output is correct
23 Correct 16 ms 8320 KB Output is correct
24 Correct 15 ms 8320 KB Output is correct
25 Correct 15 ms 8320 KB Output is correct
26 Correct 16 ms 8320 KB Output is correct
27 Correct 17 ms 8320 KB Output is correct
28 Correct 9 ms 4224 KB Output is correct
29 Correct 6 ms 1280 KB Output is correct
30 Correct 16 ms 8192 KB Output is correct

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 768 KB Output is correct
12 Correct 6 ms 1920 KB Output is correct
13 Correct 7 ms 1920 KB Output is correct
14 Correct 6 ms 1920 KB Output is correct
15 Correct 6 ms 1920 KB Output is correct
16 Correct 6 ms 1920 KB Output is correct
17 Correct 6 ms 1280 KB Output is correct
18 Correct 6 ms 1664 KB Output is correct
19 Correct 5 ms 896 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 18 ms 8320 KB Output is correct
22 Correct 16 ms 8320 KB Output is correct
23 Correct 16 ms 8320 KB Output is correct
24 Correct 15 ms 8320 KB Output is correct
25 Correct 15 ms 8320 KB Output is correct
26 Correct 16 ms 8320 KB Output is correct
27 Correct 17 ms 8320 KB Output is correct
28 Correct 9 ms 4224 KB Output is correct
29 Correct 6 ms 1280 KB Output is correct
30 Correct 16 ms 8192 KB Output is correct
31 Runtime error 166 ms 94456 KB Execution killed with signal 11 (could be triggered by violating memory limits)
32 Halted 0 ms 0 KB -