Cod sursa(job #138333)

Utilizator dominoMircea Pasoi domino Data 18 februarie 2008 12:35:33
Problema Garaj Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.85 kb
#include <stdio.h>
#include <algorithm>

using namespace std;

#define MAX_N 100005
#define FIN "garaj.in"
#define FOUT "garaj.out"
#define ll long long

int N, M, C[MAX_N], T[MAX_N];
ll V[MAX_N];

ll solve(int time)
{
    int i; ll ret = 0;

    for (i = 0; i < N; ++i)
    {
        V[i] = (ll)C[i]*(time/T[i]);
        ret += V[i];
    }
    return ret;
}

int main(void)
{
    int i, inc;

    freopen(FIN, "r", stdin);
    freopen(FOUT, "w", stdout);

    scanf("%d %d", &N, &M);
    for (i = 0; i < N; ++i)
        scanf("%d %d", C+i, T+i);

    for (i = 0, inc = 1<<30; inc; inc >>= 1)
        if (solve(i+inc) < M) i += inc;
    printf("%d ", 2*(++i));
    solve(i);
    sort(V, V+N);
    reverse(V, V+N);
    for (i = 0; i < N; ++i)
        if ((M -= V[i]) <= 0) break;
    printf("%d\n", i+1);

    return 0;
}