Mai intai trebuie sa te autentifici.
Cod sursa(job #1333685)
Utilizator | Data | 3 februarie 2015 14:44:46 | |
---|---|---|---|
Problema | Puteri | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 1.63 kb |
#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],r[405][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=r[v[i].a][p]; w.b=r[v[i].b][p]; w.c=r[v[i].c][p];
aux[i]=w;
AH(w);
}
for(i=1;i<=n;++i)
{
w.a=r[(3*p-aux[i].a)][p]; w.b=r[(3*p-aux[i].b)][p]; w.c=r[(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);
}
inline void Prec()
{
int i,j;
for(i=1;i<=400;++i)
for(j=1;j<=128;++j) r[i][j]=i%j;
}
int main()
{
long long ans=0;
int i,j;
freopen ("puteri.in","r",stdin);
freopen ("puteri.out","w",stdout);
scanf("%d", &n);
Prec();
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;
}