Cod sursa(job #1744643)

Utilizator fanache99Constantin-Buliga Stefan fanache99 Data 20 august 2016 02:05:09
Problema Garaj Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.03 kb
#include <fstream>
#include <algorithm>

using namespace std;

ifstream cin("garaj.in");
ofstream cout("garaj.out");

const int MAXN = 100000;

int n, m;
int c[1 + MAXN], t[1 + MAXN], v[1 + MAXN];

bool Check(long long moment) {
    int i, sum = 0;
    for (int i = 1; i <= n; i++) {
        sum += c[i] * (moment / t[i]);
        if (sum >= m)
            return true;
    }
    return false;
}

int main() {
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        cin >> c[i] >> t[i];
    long long left = 1, right = 1000000000001LL;
    while (left <= right) {
        long long middle = (left + right) / 2;
        if (Check(middle))
            right = middle - 1;
        else
            left = middle + 1;
    }
    cout << 2 * left << " ";
    for (int i = 1; i <= n; i++)
        v[i] = c[i] * (left / t[i]);
    sort(v + 1, v + n + 1);
    int sum = 0, i;
    for (i = n; i; i--) {
        sum += v[i];
        if (sum >= m)
            break;
    }
    cout << n - i + 1;
    return 0;
}