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Cod sursa(job #25730)
#include<stdio.h>
long long int x[35],max,p,n,i,j,a[100000],b[100000],c[100000],sol;
long long int prime128()
{
x[1]=2;x[2]=3;x[3]=5;x[4]=7;
x[5]=11;x[6]=13;x[7]=17;x[8]=19;
x[9]=23;x[10]=29;x[11]=31;x[12]=37;
x[13]=41;x[14]=43;x[15]=47;x[16]=53;
x[17]=59;x[18]=61;x[19]=67;x[20]=71;
x[21]=73;x[22]=79;x[23]=83;x[24]=89;
x[25]=97;x[26]=101;x[27]=103;x[28]=107;
x[29]=109;x[30]=113;x[31]=127;x[32]=131;
return 0;
}
long long int ok(long long int u,long long int v,long long int w)
{
max=u;
if(max<v)max=v;
if(max<w)max=w;
for(p=1;p<=31;p++)
{ if(x[p]>max) return 0;
if(u%x[p]==0) if(v%x[p]==0) if(w%x[p]==0) return 1;
}
return 0;
}
int main()
{ prime128();
FILE *f;
f=fopen("puteri.in","r");
fscanf(f,"%lld",&n);
for(i=0;i<n;i++)
fscanf(f,"%lld%lld%lld",&a[i],&b[i],&c[i]);
fclose(f);
for(i=0;i<n-1;i++)
for(j=i+1;j<n;j++)
sol+=ok(a[i]+a[j],b[i]+b[j],c[i]+c[j]);
f=fopen("puteri.out","w");
fprintf(f,"%lld\n",sol);
fclose(f);
return 0;
}