Cod sursa(job #165803)

Utilizator katakunaCazacu Alexandru katakuna Data 26 martie 2008 21:23:26
Problema Bilute Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.61 kb
#include<stdio.h>

struct bbb { long long  a,b;};
bbb v[30005];

long long p,T,x[30005],y[30005],ti,min,i,n;


int main(){


FILE *f=fopen("bilute.in","r");
fscanf(f,"%lld",&n);

  for(i=1;i<=n;i++){
  fscanf(f,"%lld %lld",&v[i].a,&v[i].b);
  T+=v[i].b*v[i].a;
  x[i]=x[i-1]+v[i].a*i;
  y[i]=y[i-1]+v[i].a;
  }


fclose(f);

min=2000000000L;


  for(i=1;i<=n;i++){
  ti=T-(v[i].a*v[i].b)+ x[n]-x[i] -i*(y[n]-y[i]) + i*(y[i-1]) - (x[i-1])  ;

   if(ti<min){
   min=ti;
   p=i;
   }

  }



FILE *g=fopen("bilute.out","w");
fprintf(g,"%lld %lld",p,min);
fclose(g);

return 0;
}