Submission #1995147


Source Code Expand

#include<bits/stdc++.h>
using namespace std;

const int MX=4015,md=1000000007;

int n,m,k,f[MX][MX],s[MX];
int main(){
	int i,j;
	cin>>n>>m>>k;
	f[0][0]=1;
	for(i=1;i<n+m;i++){
		memcpy(s,f[i-1],sizeof(int)*(m+1));
		for(j=1;j<=m;j++)s[j]=(s[j-1]+s[j])%md;
		for(j=0;j<=m;j++)f[i][j]=(s[j]+md-(j>=k?s[j]:0))%md;
	}
	int ans=0;
	while(m){
		ans=(ans+f[(n+m-1)/(k-1)][m])%md;
		m-=k-1;
	}
	cout<<ans<<endl;
	return 0;
}

Submission Info

Submission Time
Task E - Eternal Average
User CommonAnts
Language C++14 (GCC 5.4.1)
Score 0
Code Size 439 Byte
Status RE
Exec Time 174 ms
Memory 62208 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 1600
Status
WA × 2
RE × 1
AC × 3
WA × 7
RE × 17
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 WA 1 ms 256 KB
02.txt WA 77 ms 62208 KB
03.txt AC 1 ms 256 KB
04.txt AC 1 ms 256 KB
05.txt RE 172 ms 62080 KB
06.txt WA 39 ms 32512 KB
07.txt RE 102 ms 31488 KB
08.txt RE 103 ms 11392 KB
09.txt RE 171 ms 62208 KB
10.txt RE 174 ms 62208 KB
11.txt RE 172 ms 62208 KB
12.txt AC 77 ms 62080 KB
13.txt RE 165 ms 59136 KB
14.txt RE 134 ms 44416 KB
15.txt RE 163 ms 57088 KB
16.txt RE 112 ms 31744 KB
17.txt RE 149 ms 54784 KB
18.txt WA 47 ms 38656 KB
19.txt WA 9 ms 33536 KB
20.txt RE 154 ms 56960 KB
21.txt RE 96 ms 256 KB
22.txt RE 171 ms 62080 KB
23.txt RE 157 ms 56960 KB
24.txt RE 155 ms 54912 KB
s1.txt WA 1 ms 256 KB
s2.txt WA 1 ms 256 KB
s3.txt RE 98 ms 4992 KB