Cod sursa(job #837640)
Utilizator | Data | 18 decembrie 2012 12:16:28 | |
---|---|---|---|
Problema | Divk | Scor | 90 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.37 kb |
#include<stdio.h>
int v[500005],d[500005];
int main()
{
freopen("divk.in","r",stdin);
freopen("divk.out","w",stdout);
int n,i,k,a,b,s=0;
scanf("%d%d%d%d",&n,&k,&a,&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++)
{
d[v[i-a]]++;
if(i>b)
d[v[i-b-1]]--;
s=s+d[v[i]];
}
printf("%d\n",s);
return 0;
}