Cod sursa(job #3264175)

Utilizator Radu_BicliBiclineru Radu Radu_Bicli Data 18 decembrie 2024 18:38:29
Problema Garaj Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.01 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("garaj.in");
ofstream fout("garaj.out");
const long long inf = 1e12 + 7;
long long n, m, i, j, drum[100002];
long long t[100002], c[100002];

static inline bool Verif(long long timp) {
    long long sum = 0;
    for(long long i = 1; i <= n; i++) sum += c[i] * (timp / (t[i] * 2));
    return m <= sum;
}

int main() {
    fin >> n >> m;
    for(i = 1; i <= n; i++) fin >> c[i] >> t[i];

    long long st = 1, dr = inf;
    long long rasp = 0;
    while(st <= dr) {
        long long mij = st + (dr - st) / 2;

        if(Verif(mij)) {
            rasp = mij;
            dr = mij - 1;
        }
        else st = mij + 1;
    }

    for(i = 1; i <= n; i++) drum[i] = c[i] * (rasp / (t[i] * 2));

    sort(drum + 1, drum + n + 1, greater<long long>());

    long long fr = 0;
    long long sum = 0;
    for(i = 1; i <= n && sum < m; i++) {
        sum += drum[i];
        fr++;
    }
    fout << rasp << " " << fr;

    return 0;
}