Cod sursa(job #2547384)
Utilizator | FMI Calinescu Valentin Gelu Vally77 | Data | 15 februarie 2020 12:11:33 |
---|---|---|---|
Problema | Divk | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.49 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("divk.in");
ofstream fout("divk.out");
const int NMAX = 5e5 + 5;
long long n, k, a, b, v[NMAX], sol[NMAX], ans;
int main()
{
fin >> n >> k >> a >> b;
for (int i = 1; i <= n; i++)
{
fin >> v[i];
v[i] = (v[i - 1] + v[i]) % k;
if (i >= a)
sol[v[i - a]]++;
if (i > b)
sol[v[i - b - 1]]--;
ans += sol[v[i]];
}
fout << ans ;
fout.close();
return 0;
}