Cod sursa(job #2049452)
Utilizator | Data | 27 octombrie 2017 10:56:27 | |
---|---|---|---|
Problema | Branza | Scor | 40 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.61 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("branza.in");
ofstream g("branza.out");
int v[100000], d[100000];
int main()
{
int n, k, t, p, i, x, st, dr;
long long sum;
f >> n >> t >> p;
dr = -1;
for ( i = st = sum = 0; i < n; i++ ) {
f >> v[i] >> x;
if ( st <= dr && d[st] == i-p ) {
st++;
}
while ( st <= dr && v[d[dr]] + ( i - d[dr] ) * t >= v[i] ) {
dr--;
}
d[++dr] = i;
sum += (long long)x * (v[d[st]] + ( i - d[st] ) * t);
}
g << sum;
f.close();
g.close();
return 0;
}