Pagini recente » Cod sursa (job #247077) | Cod sursa (job #182115) | Cod sursa (job #1878388) | Cod sursa (job #2136525) | Cod sursa (job #484753)
Cod sursa(job #484753)
#include <stdio.h>
#include <string.h>
#define Nmax 100002
#define Vmax 64+64+1
#define Rmax 65
int a[Nmax],b[Nmax],c[Nmax];
int p[Vmax],prim[Vmax],Nr[Vmax];
int r[Rmax][Rmax][Rmax],uzz[Rmax][Rmax][Rmax];
int N,z;
inline int Minim(int x,int y){ return x<y ? x:y; }
void ciur(){
int i,j;
for(i=2;i<Vmax;++i)
if( p[i]==0 ){
prim[++z]=i;
for(j=i; j<Vmax; j+=i)
if( p[j]!=-1)
++p[j];
for(j=i*i; j<Vmax; j+=i*i)
p[j]=-1;
}
}
int main(){
int i,j,rez=0,i1,i2,j1,j2,k1,k2;
freopen("puteri.in","r",stdin);
freopen("puteri.out","w",stdout);
scanf("%d",&N);
for(i=1;i<=N;++i) scanf("%d%d%d",&a[i],&b[i],&c[i]);
ciur();
for(i=2;i<Vmax;++i){
memset(r,0,sizeof(r));
for(j=1;j<=N;++j)
++r[a[j]%i][b[j]%i][c[j]%i];
for(i1=0;i1<Minim(i,Rmax);++i1)
for(i2=(i-i1)%i, j1=0;j1<Minim(i,Rmax);++j1)
for(j2=(i-j1)%i, k1=0;k1<Minim(i,Rmax);++k1){
k2=(i-k1)%i;
if( i2<Rmax && j2<Rmax && k2<Rmax )
if( i1==i2 && j1==j2 && k1==k2 )
Nr[i] += r[i1][j1][k1]*(r[i1][j1][k1]-1);
else Nr[i] += r[i1][j1][k1]*r[i2][j2][k2];
}
}
for(i=2; i<Vmax; ++i)
if(p[i] != -1 )
if( p[i] & 1) rez += Nr[i];
else rez -= Nr[i];
printf("%d\n",rez/2);
fclose(stdin); fclose(stdout);
return 0;
}