Cod sursa(job #1536531)

Utilizator StarGold2Emanuel Nrx StarGold2 Data 26 noiembrie 2015 12:47:49
Problema Garaj Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.19 kb
#include <cstdio>
#include <algorithm>
#define DIM 100010
using namespace std;

int N, M; long long left, right, mid;
int V[DIM], W[DIM]; long long T[DIM];

inline bool Verif (long long time) {
    int ok; long long car = 0;

    for (int i = 1; i <= N; i ++) {
        car += time / W[i] * 1LL * V[i];

        if (car >= M)
            return 1;
    }
    return 0;
}

int main () {

    freopen ("garaj.in" ,"r", stdin );
    freopen ("garaj.out","w", stdout);

    scanf ("%d %d", &N, &M);
    for (int i = 1; i <= N; i ++) {
        scanf ("%d %d", &V[i], &W[i]);
        W[i] *= 2;
    }

    left = 1; right = M * 1LL * 2000;
    while (left <= right) {
        mid = left + (right - left) / 2;

        if (Verif (mid))
            right = mid - 1;
        else
            left = mid + 1;
    }

    printf ("%lld ", left);
    long long time = left;

    for (int i = 1; i <= N; i ++)
        T[i] = time / W[i] * 1LL * V[i];

    sort (T + 1, T + N + 1);

    long long car = 0;
    for (int i = N; i >= 1; i --) {
        car += T[i];

        if (car >= M) {
            printf ("%d", N - i + 1);
            break;
        }
    }

    return 0;
}