Submission #58023415

Source Code Expand

// LUOGU_RID: 177962007
#include<iostream>
using namespace std;
const int N=4005,mod=1e9+7;
int n,m,K,f[N][N],ans;
int Mod(int x){return x>=mod?x-mod:x;}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cin>>n>>m>>K,f[0][0]=1;
    int d=(n+m-1)/(K-1);
    for(int i=1;i<=d;i++){
        for(int j=0;j<K;j++){
            for(int k=j;k<=i*K&&k<=m;k++){
                f[i][k]=Mod(f[i-1][k-j]+f[i][k]);
            }
        }
    }
    while(m>0){
        ans=Mod(ans+f[d][m]);
        d--,m-=K-1;
    }
    cout<<ans<<'\n';
    return 0;
}

Submission Info

Submission Time
Task E - Eternal Average
User do_it_tomorrow
Language C++ 17 (gcc 12.2)
Score 1600
Code Size 585 Byte
Status AC
Exec Time 33 ms
Memory 46800 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1600 / 1600
Status
AC × 3
AC × 27
Set Name Test Cases
Sample s1.txt, s2.txt, s3.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, s1.txt, s2.txt, s3.txt
Case Name Status Exec Time Memory
01.txt AC 1 ms 3444 KiB
02.txt AC 33 ms 46800 KiB
03.txt AC 1 ms 3456 KiB
04.txt AC 1 ms 3388 KiB
05.txt AC 19 ms 24424 KiB
06.txt AC 6 ms 9372 KiB
07.txt AC 2 ms 5520 KiB
08.txt AC 1 ms 3948 KiB
09.txt AC 6 ms 4692 KiB
10.txt AC 6 ms 4324 KiB
11.txt AC 4 ms 3556 KiB
12.txt AC 4 ms 3424 KiB
13.txt AC 5 ms 3796 KiB
14.txt AC 3 ms 3544 KiB
15.txt AC 5 ms 3748 KiB
16.txt AC 1 ms 3392 KiB
17.txt AC 3 ms 3580 KiB
18.txt AC 3 ms 4140 KiB
19.txt AC 6 ms 12664 KiB
20.txt AC 8 ms 8924 KiB
21.txt AC 1 ms 3544 KiB
22.txt AC 9 ms 8488 KiB
23.txt AC 5 ms 4092 KiB
24.txt AC 4 ms 3904 KiB
s1.txt AC 1 ms 3452 KiB
s2.txt AC 1 ms 3472 KiB
s3.txt AC 1 ms 3620 KiB