Cod sursa(job #658334)
Utilizator | Mihai Bogdan mihaibogdan10 | Data | 8 ianuarie 2012 16:52:40 |
---|---|---|---|
Problema | Divk | Scor | 50 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.5 kb |
#include<cstdio>
using namespace std;
int v[500001], nr;
int main(){
freopen("divk.in", "r", stdin), freopen("divk.out", "w", stdout);
int N, K, A, B, i, lng, r;
scanf("%d %d %d %d", &N, &K, &A, &B);
for (i = 0; i < N; i++) scanf("%d", &v[i]);
for (lng = A; lng <= B; lng++, r = 0){
for (i = 0; i < lng; i++)
r = (r + v[i]) % K;
if (r == 0) nr ++;
for (; i < N; i++){
r = (r + v[i] - v[i - lng]) % K;
if (r == 0) nr++;
}
}
printf("%d", nr);
return 0;
}