Submission #1180302


Source Code Expand

#include<bits/stdc++.h>
#define N 2005
using namespace std;
const int mo=1e9+7;
int n,m,k,S,f[N][N],ans;
void inc(int &x,int y){ x=x+y>=mo ? x+y-mo : x+y;}
void dec(int &x,int y){ x=x-y<0 ? x-y+mo : x-y;}
int main()
{
	int i,j;
	cin>>n>>m>>k;
	f[0][0]=1;
	for(i=1;i<=2000;i++){
		S=0;
		for(j=0;j<=m;j++){
			if(j>=k) dec(S,f[i-1][j-k]);
			if(j%(k-1)==m%(k-1)&&(k-1)*i-j<=n-1&&((k-1)*i-j)%(k-1)==(n-1)%(k-1))
				inc(ans,S);
			inc(S,f[i-1][j]);
			inc(f[i][j],S);
		  }
	  }
	cout<<ans;
	return 0;
}

Submission Info

Submission Time
Task E - Eternal Average
User MemorySlices
Language C++14 (GCC 5.4.1)
Score 0
Code Size 527 Byte
Status WA
Exec Time 50 ms
Memory 15872 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 1600
Status
AC × 3
AC × 25
WA × 2
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 5 ms 14208 KB
02.txt WA 50 ms 15872 KB
03.txt AC 5 ms 14208 KB
04.txt AC 4 ms 14208 KB
05.txt AC 36 ms 15872 KB
06.txt AC 29 ms 15872 KB
07.txt AC 4 ms 14208 KB
08.txt AC 13 ms 15360 KB
09.txt AC 28 ms 15872 KB
10.txt AC 29 ms 15872 KB
11.txt AC 24 ms 15872 KB
12.txt AC 22 ms 15872 KB
13.txt AC 28 ms 15872 KB
14.txt AC 19 ms 15872 KB
15.txt AC 28 ms 15872 KB
16.txt AC 10 ms 15232 KB
17.txt AC 21 ms 15872 KB
18.txt AC 27 ms 15872 KB
19.txt WA 7 ms 14464 KB
20.txt AC 25 ms 15872 KB
21.txt AC 5 ms 14208 KB
22.txt AC 28 ms 15872 KB
23.txt AC 25 ms 15872 KB
24.txt AC 25 ms 15872 KB
s1.txt AC 5 ms 14208 KB
s2.txt AC 5 ms 14208 KB
s3.txt AC 6 ms 14464 KB