121 lines
2.5 KiB
C++
121 lines
2.5 KiB
C++
#include<stdio.h>
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#include<string.h>
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#include<math.h>
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#include<algorithm>
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#define LL __int64
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const int N = 1e9;
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using namespace std;
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int r, d[10005], n[40], pr[10005], qpr[10005], tq;
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void Pr()
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{
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int i, j;
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memset( pr, 1, sizeof(pr) );
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pr[1] = 0;
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for( i = 2; i <= 10000; i ++ )
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if( pr[i] )
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{
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j = i+i;
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while( j <= 10000 )
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{
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pr[j] = 0;
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j += i;
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}
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qpr[tq++] = i;
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}
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}
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int Gcd( int a, int b )
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{
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if( !b )
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return a;
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else
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return Gcd( b, a%b );
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}
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void Op()
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{
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memset( d, 0, sizeof(d) );
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int t, i, j, tt;
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for( j = 0; j < r; j ++ )
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{
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t = n[j];
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for( i = 0; i < tq && t > 1; i ++ )
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if( !( t % qpr[i] ) )
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{
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tt = 1;
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t/=qpr[i];
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while( !( t%qpr[i] ) )
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{
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tt ++;
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t/=qpr[i];
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}
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d[ qpr[i] ] = d[ qpr[i] ] > tt ? d[ qpr[i] ] : tt;
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}
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}
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}
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int main()
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{
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int i, j, k, ti, qu[10004], top, na, mu[30];
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LL qa[30], t, ans;
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Pr();
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while( ~scanf( "%d", &r ) )
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{
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for( i = 0; i < r; i ++ )
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{
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scanf( "%d%d", n+i, &k );
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k = Gcd( n[i], k );
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n[i] /= k;
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}
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Op();
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ans = 1;
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top = 0;
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for( i = 0; i < tq; i ++ )
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if( d[ qpr[i] ] > 0)
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{
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ans *= d[ qpr[i] ]+1;
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qu[ top++ ] = qpr[i];
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}
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if( top > 0 && qu[0] == 2 )
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na = 2;
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else
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na = 1;
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printf( "%I64d\n", ans-na );
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ans = ans < 16+na ? ans : 16+na;
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qa[0] = 1;
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mu[0] = 0;
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for( k = 1; k < ans; k ++ )
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{
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t = N*(LL)N;
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for( i = 0; i < k; i ++ )
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if( mu[i] < top && qu[ mu[i] ] * qa[i] < t )
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t = qu[ mu[i] ]*qa[i];
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qa[k] = t;
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mu[k] = -1;
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for( j = 0; j <= k; j ++ )
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if( mu[j] < 0 || ( mu[j] < top && qu[ mu[j] ] * qa[j] == qa[k] ) )
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{
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for( i = mu[j]+1; i < top; i ++ )
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{
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ti = 0;
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t = qa[j];
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while( !( t % qu[i] ) )
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{
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ti ++;
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t /= qu[i];
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}
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if( ti < d[ qu[i] ] )
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break;
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}
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mu[j] = i;
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}
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}
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if( na < ans )
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{
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printf( "%I64d", qa[na] );
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na ++;
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for( j = 1; na < ans && j < 16; na ++, j ++ )
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printf( " %I64d", qa[na] );
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printf( "\n" );
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}
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}
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return 0;
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}
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