Cod sursa(job #1059640)
Utilizator | Data | 16 decembrie 2013 20:46:05 | |
---|---|---|---|
Problema | Divk | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.39 kb |
#include <cstdio>
int v[100004],s[500004];
int main()
{
int n,a,b,k,i,j;
long long nr=0,x;
freopen("divk.in","r",stdin);
freopen("divk.out","w",stdout);
scanf("%d %d %d %d",&n,&k,&a,&b);
for (i=1;i<=n;++i)
{
scanf("%d",&s[i]);
s[i]=(s[i]+s[i-1])%k;
if (i>=a)
{
if (i>b) -- v[s[i-b-1]];
++v[s[i-a]];
nr+=v[s[i]];
}
}
printf("%lld",nr);
return 0;}