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Cod sursa(job #190698)
#include <stdio.h>
long long a[30010],b[30010],c[30010],l[30010],d[110];
long long s,n,m,p;
int main()
{
freopen("bilute.in","r",stdin);
freopen("bilute.out","w",stdout);
scanf("%lld",&n);
int i,j;
for (i=1; i<=n; ++i)
{
scanf("%d %d",&c[i],&l[i]);
s+=c[i]*l[i];
}
++d[c[1]];
for (i=2; i<=n; ++i)
{
a[i]=a[i-1];
for (j=1; j<101; ++j) a[i]+=j*d[j];
++d[c[i]];
}
for (i=1; i<=100; ++i) d[i]=0;
++d[c[n]];
for (i=n-1; i>=1; --i)
{
b[i]=b[i+1];
for (j=1; j<101; ++j) b[i]+=j*d[j];
++d[c[i]];
}
m=(long long) 1000000000*1000000000;
p=0;
for (i=1; i<=n; ++i)
{
if (a[i]+b[i]+s-c[i]*l[i]<m)
{
m=(long long)(a[i]+b[i]+s-c[i]*l[i]);
p=i;
}
}
printf("%lld %lld\n",p,m);
return 0;
}