Submission #1673742

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cstring>
namespace nym
{
	typedef long long ll;
	const int N=2010,MOD=1000000007;
	template<typename T>inline void inc(T a,T &b){b=(a+b)%MOD;}
	int n,m,k;
	ll f[N],g[N];
	void solve()
	{
		scanf("%d%d%d",&n,&m,&k);
		f[0]=g[0]=1;
		ll ans=0,tmp;
		int lim=(n+m)/(k-1)+10;
		for(int i=1;i<=lim;i++)
		{
			for(int j=1;j<=n;j++)g[j]=(g[j-1]+f[j])%MOD;
			for(int j=1,dj;j<=n;j++)
			{
				if(j<k)tmp=g[j-1];
				else tmp=g[j-1]-g[j-k];

				dj=i*(k-1)-j;
				if(j%(k-1)==n%(k-1) && dj<m && dj%(k-1)==(m-1)%(k-1))
					inc(tmp,ans);
				inc(tmp,f[j]);
			}

//			printf("pos %d : ",i);
//			for(int j=0;j<=n;j++)
//				printf("%lld ",f[j]);
//			printf("\n");
		}
		printf("%lld\n",(ans%MOD+MOD)%MOD);
	}

}
int main()
{
	nym::solve();
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘void nym::solve()’:
./Main.cpp:13:27: 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