Pagini recente » Cod sursa (job #180595) | Cod sursa (job #2880853) | Cod sursa (job #1885846) | Cod sursa (job #2219886) | Cod sursa (job #1333668)
#include <cstdio>
#include <vector>
#define Nmax 100005
#define MOD 100019
using namespace std;
struct triplet
{
int a,b,c,cnt;
bool operator == (const triplet A) const
{
return (a==A.a && b==A.b && c==A.c);
}
} v[Nmax],aux[Nmax];
int fr[130][130][130];
int ciur[130],n;
inline void AH(triplet w)
{
++fr[w.a][w.b][w.c];
}
inline void Delete(triplet w)
{
--fr[w.a][w.b][w.c];
}
inline int SH(triplet w)
{
return fr[w.a][w.b][w.c];
}
inline long long Count(int p)
{
triplet w;
int i;
long long sol=0;
for(i=1;i<=n;++i)
{
w.a=v[i].a%p; w.b=v[i].b%p; w.c=v[i].c%p;
aux[i]=w;
AH(w);
}
for(i=1;i<=n;++i)
{
w.a=(3*p-aux[i].a)%p; w.b=(3*p-aux[i].b)%p; w.c=(3*p-aux[i].c)%p;
sol+=SH(w);
if(w==aux[i]) --sol;
}
for(i=1;i<=n;++i) Delete(aux[i]);
return (sol>>1);
}
int main()
{
long long ans=0;
int i,j;
freopen ("puteri.in","r",stdin);
freopen ("puteri.out","w",stdout);
scanf("%d", &n);
for(i=1;i<=n;++i) scanf("%d%d%d", &v[i].a,&v[i].b,&v[i].c);
for(i=2;i<=128;++i)
if(!ciur[i])
{
for(j=i*2;j<=128;j+=i) ++ciur[j];
ans+=Count(i);
}
else
{
for(j=i*2;j<=128;j+=i) ciur[j]-=(ciur[i]-1);
if(ciur[i]>1)
ans-=Count(i)*(ciur[i]-1);
}
printf("%lld\n", ans);
return 0;
}