Cod sursa(job #312142)
Utilizator | Izsak Istvan RockMan | Data | 5 mai 2009 10:44:55 |
---|---|---|---|
Problema | Divk | Scor | 20 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.49 kb |
#include <cstdio>
int main()
{
freopen("divk.in","r",stdin);
freopen("divk.out","w",stdout);
long el[500001],nr=0;
int a,b,k,n,i,j,sum=0;
scanf("%d%d%d%d",&n,&k,&a,&b);
for(i=1;i<=n;i++)
{
scanf("%ld",el+i);
el[i]%=k;
}
for(i=1;i<=n-a+1;i++)
{
sum=el[i];
if(!sum&&a==1) nr++;
for(j=i+1;j<=i+b-1&&j<=n;j++)
{
sum = (sum + el[j]) % k;
if(!sum&&j-i+1>=a) nr ++;
}
}
printf("%ld",nr);
fclose(stdin);
fclose(stdout);
return 0;
}