Submission #1026565

#	Time	Username	Problem	Language	Result	Execution time	Memory
1026565		BABY_GANGSTER	Asceticism (JOI18_asceticism)	C++14	49 / 100	50 ms	41812 KiB

asceticism

//https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2")
#include<bits/stdc++.h>
#define int long long
//#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans ","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
void phongbeo();
const int inf=1e18;
const int mod2=1e9+7;
const int  mod1=998244353;
struct icd
{
    int a,b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a,b,c,d;
};
struct ie
{
    int a,b,c,d,e,f;

};
int n,m,s1,s2,s4,s3,sf,k,r,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,l;
int  i,s10,s12;
int el=29;
 main()
{
#ifndef ONLINE_JUDGE
 // fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    //  modwwe
    phongbeo();
}
int dp[5001][5001];
void phongbeo()
{
     cin>>n>>m;
     dp[1][1]=1;
      for(int i=2;i<=n;i++)
       for(int j=1;j<=min(i,m);j++)
        {
              dp[i][j]=(dp[i][j]+dp[i-1][j]*j)%mod2;
              dp[i][j]=(dp[i][j]+dp[i-1][j-1]*(i-j+1))%mod2;
        }
         cout<<dp[n][m],down
 }

Compilation message (stderr)

asceticism.cpp:48:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 |  main()
      |  ^~~~

• Subtask 1: 4 / 4
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 0 / 51