Cod sursa(job #773419)
Utilizator | Data | 1 august 2012 17:31:20 | |
---|---|---|---|
Problema | Divk | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.39 kb |
#include<stdio.h>
int v[500005],c[500005];
int main()
{
freopen("divk.in","r",stdin);
freopen("divk.out","w",stdout);
scanf("%d%d%d%d",&n,&k,&a,&b);
int n,a,b,k,i;
long long s=0;
b++;
for(i=1;i<=n;i++)
{
scanf("%d",&v[i]);
v[i]=(v[i]+v[i-1])%k;
}
for(i=a;i<=n;i++)
{
c[v[i-a]]++;
if(i>=b)
c[v[i-b]]--;
s=s+c[v[i]];
}
printf("%lld",s);
return 0;
}