Cod sursa(job #1911130)

Utilizator andru47Stefanescu Andru andru47 Data 7 martie 2017 19:30:50
Problema Garaj Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.95 kb
#include <bits/stdc++.h>
using namespace std;
int n,m,c[100005],t[100005],aux[100005];
int main()
{
    freopen("garaj.in","r",stdin);
    freopen("garaj.out","w",stdout);

    scanf("%d %d\n", &n, &m);
    for (int i = 1; i<=n; ++i)
        scanf("%d %d\n", &c[i], &t[i]);
    long long st , dr , mij;
    st = 0 , dr = 10000000001;
    long long timp = 0LL;
    while(st <= dr)
    {
        mij = (st + dr) >> 1;
        int val = 0LL;
        for (int i = 1; i<=n && val <= m; ++i)
            val += (int)( (1LL * mij) / (1LL*t[i]) * 1LL * c[i]);
        if (val >= m)
            timp = mij , dr = mij - 1;
        else st = mij + 1;
    }
    printf("%lld ", 2 * timp);
    for (int i = 1; i<=n; ++i)
        aux[i] = (int)((1LL * timp) / (t[i]) * 1LL * c[i]);
    sort(aux + 1, aux + n + 1);
    int ans = 0;
    int val = 0;
    for (int i = n; i>=1 && val <=m ; val+=aux[i] , ++ans, --i);
    printf("%d\n", ans);
    return 0;
}