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Cod sursa(job #137390)
#include<stdio.h>
#define Max 100003
#include<stdlib.h>
FILE*f=fopen("garaj.in","r");
FILE*g=fopen("garaj.out","w");
int M,n,t[Max],c[Max],tsol,max=1;
void read()
{
fscanf(f,"%d %d",&n,&M);
int i;
for(i=1;i<=n;++i) fscanf(f,"%d %d",&c[i],&t[i]);
}
int ok(int T)
{
int i,k,cc=0,count=0;
for(i=n;i>=1;--i)
{
k=1;
if(2*t[i]<=T) count++;
while(k*2*t[i]<=T)
{
cc+=c[i];
if(cc>=M) {max=count;return 1;}
++k;
}
}
return 0;
}
void solve()
{
int i,x;
i=1;
while(!ok(i)) ++i;
tsol=i;
fprintf(g,"%d %d\n",tsol,max);
}
int main()
{
read();
solve();
return 0;
}