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Cod sursa(job #166625)
#include <stdio.h>
#define nmax 100005
int C[nmax], D[nmax], T[nmax], U[nmax];
int tmin, nrmin, N, M, tmax;
// if (source.reader() == "Astronomy")
// {
// cout<<"Foca va merge in egipt";
// }
// else
// {
// cout<<"Foca va merge in egipt indiferent de cititor";
// }
void msort(int l, int r)
{
if (l >= r)
return;
int m = (l+r)>>1, i, j, k;
msort(l, m);
msort(m+1, r);
for (i = k = l, j = m+1; i <= m || j <= r; ++k)
{
if (j > r || (i <= m && tmin/T[i]*C[i] >= tmin/T[j]*C[j]))
{
D[k] = C[i];
U[k] = T[i];
++i;
}
else
{
D[k] = C[j];
U[k] = T[j];
++j;
}
}
for (k = l; k <= r; ++k)
{
C[k] = D[k];
T[k] = U[k];
}
}
void search(int l, int r)
{
if (l > r)
return;
int t = (l+r)>>1, c, i;
// pot sa fie incarcate oricum, important este la final sa fie >= M
for (i = 1, c = 0; i <= N && c < M; ++i)
c += t/T[i]*C[i];
if (c >= M)
{
tmin = t;
search(l, t-1);
}
else
search(t+1, r);
}
void read()
{
int i;
freopen("garaj.in", "r", stdin);
scanf("%d%d", &N, &M);
for (i = 1; i <= N; ++i)
{
scanf("%d%d", &C[i], &T[i]);
T[i] <<= 1;
}
}
void solve()
{
int i, c;
for (tmax = 100000, i = 1; i <= N; ++i)
if (T[i] < tmax)
tmax = T[i];
tmax *= M;
search(1, tmax);
msort(1, N);
for (i = 1, c = 0, nrmin = 0; i <= N && c < M; ++i)
{
c += tmin/T[i]*C[i];
++nrmin;
}
}
void write()
{
freopen("garaj.out", "w", stdout);
printf("%d %d\n", tmin, nrmin);
}
int main()
{
read();
solve();
write();
return 0;
}