oj.uz

Submission #851010

# Submission time Handle Problem Language Result Execution time Memory
851010 2023-09-18T08:02:00 Z 8pete8 Tents (JOI18_tents) C++17
100 / 100
 93 ms 71760 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include<bitset>
//#include "supertrees.h"
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
using namespace std;
#define int long long
const int mxn=3003,mod=1000000007,lg=20,root=80,inf=1e18;
void setIO(string name) {
	ios_base::sync_with_stdio(0); cin.tie(0);
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
int dp[mxn+10][mxn+10],pl[mxn+10][mxn+10],pu[mxn+10][mxn+10];
int cnt[mxn+10];
int32_t main(){
    fastio
    int n,m;cin>>n>>m;
    for(int i=0;i<=mxn;i++)dp[0][i]=dp[i][0]=1;
    for(int i=1;i<=mxn;i++){//main ;to not over count
        for(int j=1;j<=mxn;j++){
            dp[i][j]+=dp[i-1][j]+(dp[i-1][j-1]*4*j)%mod;
            dp[i][j]%=mod;
            if(i>=2)dp[i][j]+=(dp[i-2][j-1]*(i-1)*j%mod)%mod;
            dp[i][j]%=mod;
            if(j>=2)dp[i][j]+=(dp[i-1][j-2]*(((j*(j-1))/2))%mod)%mod;
            dp[i][j]%=mod;
        }
    }
    cout<<dp[n][m]-1;
    return 0;
}

Compilation message

tents.cpp: In function 'void setIO(std::string)':
tents.cpp:33:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tents.cpp:34:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
48.0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 71508 KB Output is correct
2 Correct 87 ms 71508 KB Output is correct
3 Correct 91 ms 71508 KB Output is correct
4 Correct 88 ms 71504 KB Output is correct
5 Correct 87 ms 71508 KB Output is correct
6 Correct 86 ms 71504 KB Output is correct
7 Correct 93 ms 71472 KB Output is correct
8 Correct 88 ms 71728 KB Output is correct
9 Correct 87 ms 71568 KB Output is correct
10 Correct 86 ms 71508 KB Output is correct
11 Correct 86 ms 71508 KB Output is correct
12 Correct 86 ms 71508 KB Output is correct

Subtask #2
52.0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 71508 KB Output is correct
2 Correct 87 ms 71508 KB Output is correct
3 Correct 91 ms 71508 KB Output is correct
4 Correct 88 ms 71504 KB Output is correct
5 Correct 87 ms 71508 KB Output is correct
6 Correct 86 ms 71504 KB Output is correct
7 Correct 93 ms 71472 KB Output is correct
8 Correct 88 ms 71728 KB Output is correct
9 Correct 87 ms 71568 KB Output is correct
10 Correct 86 ms 71508 KB Output is correct
11 Correct 86 ms 71508 KB Output is correct
12 Correct 86 ms 71508 KB Output is correct
13 Correct 86 ms 71476 KB Output is correct
14 Correct 88 ms 71476 KB Output is correct
15 Correct 86 ms 71476 KB Output is correct
16 Correct 89 ms 71476 KB Output is correct
17 Correct 87 ms 71760 KB Output is correct
18 Correct 86 ms 71476 KB Output is correct
19 Correct 86 ms 71508 KB Output is correct
20 Correct 91 ms 71476 KB Output is correct
21 Correct 86 ms 71624 KB Output is correct
22 Correct 89 ms 71508 KB Output is correct
23 Correct 90 ms 71504 KB Output is correct
24 Correct 87 ms 71492 KB Output is correct
25 Correct 89 ms 71492 KB Output is correct
26 Correct 86 ms 71584 KB Output is correct
27 Correct 87 ms 71508 KB Output is correct