Cod sursa(job #2467079)
Utilizator | Simon Slanina Simon2712 | Data | 3 octombrie 2019 17:49:38 |
---|---|---|---|
Problema | Divk | Scor | 20 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.5 kb |
#include <fstream>
using namespace std;
ifstream cin("divk.in");
ofstream cout("divk.out");
int sum[500001];
int vc[100000],vca[100001];
int main()
{
int n,a,b,rez=0,k,nr,i;
long long s=0;
cin>>n>>k>>a>>b;
for(i=1;i<=n;i++)
{
cin>>nr;
s+=nr;
sum[i]=s%k;
if(i>b)
vc[sum[i-b]]--;
vca[s%k]++;
if(i>=a){
vca[sum[i-a+1]]--;
vc[sum[i-a+1]]++;
}
rez+=vc[s%k];
}
cout<<rez;
return 0;
}