Submission #1216891


Source Code Expand

#include<cstring>
#include<cstdlib>
#include<cstdio>
#include<cmath>
#include<iostream>
#define N 2100
#define mmod 1000000007
using namespace std;
int n,m,k,f[N],g[N],ans;
int main()
{
	scanf("%d%d%d",&n,&m,&k);
	f[0]=1;
	for(int i=1;;i++)
	{
		if((i-1)*(k-1)+k>n+m) break;
		int sum=(i-1)*(k-1),sa,sb;
		for(int j=0;j<=n;j++)
		{
			if(f[j]==0) continue;
			for(int a=1;a<k;a++)
			{
				sa=j+a;
				sb=sum-j+k-a;
				if(sa>n || sb>m || sb<0) continue;
				if((n-sa)%(k-1)==0 && (m-sb)%(k-1)==0) ans=(ans+f[j])%mmod;
			}
		}
		for(int j=0;j<=n;j++) g[j]=0;
		for(int j=0;j<=n;j++)
			for(int x=0;x<k;x++)
				g[j+x]=(g[j+x]+f[j])%mmod;
		for(int j=0;j<=n;j++) f[j]=g[j];
	}
	printf("%d\n",ans);
	return 0;
}

Submission Info

Submission Time
Task E - Eternal Average
User la1la1la
Language C++14 (GCC 5.4.1)
Score 1600
Code Size 746 Byte
Status AC
Exec Time 90 ms
Memory 256 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&n,&m,&k);
                          ^

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 256 KB
02.txt AC 90 ms 256 KB
03.txt AC 1 ms 256 KB
04.txt AC 1 ms 256 KB
05.txt AC 63 ms 256 KB
06.txt AC 1 ms 256 KB
07.txt AC 16 ms 256 KB
08.txt AC 2 ms 256 KB
09.txt AC 39 ms 256 KB
10.txt AC 40 ms 256 KB
11.txt AC 24 ms 256 KB
12.txt AC 19 ms 256 KB
13.txt AC 31 ms 256 KB
14.txt AC 17 ms 256 KB
15.txt AC 28 ms 256 KB
16.txt AC 6 ms 256 KB
17.txt AC 24 ms 256 KB
18.txt AC 8 ms 256 KB
19.txt AC 32 ms 256 KB
20.txt AC 37 ms 256 KB
21.txt AC 1 ms 256 KB
22.txt AC 43 ms 256 KB
23.txt AC 31 ms 256 KB
24.txt AC 28 ms 256 KB
s1.txt AC 1 ms 256 KB
s2.txt AC 1 ms 256 KB
s3.txt AC 1 ms 256 KB