ZOJ 1003 Crashing Balloon
2010-08-14 17:59
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/*ZOJ 1003 Crashing Balloon 来自网络。自己的只是变量名和这不同,总提示超时,郁闷。。。。 */ #include <stdio.h> int flag1 , flag2; void dfs ( int n , int m , int fac ) { if ( flag1== 1 ) return ; if ( m==1 && n==1 ) { flag1 = 1; flag2 = 1; return ; } if ( m==1 ) flag2 = 1; if ( fac<2 ) return ; if ( n % fac == 0 ) dfs ( n/fac, m , fac-1 ); if ( m%fac== 0 ) dfs ( n , m/fac, fac-1 ); dfs ( n , m , fac-1 ) ; } int main() { int tmp ,n , m ; while ( scanf("%d %d",&n,&m)!=EOF ) { if ( m>n ) { tmp = m ; m= n ; n = tmp; } flag1 = flag2 = 0; dfs ( n , m , 100 ); //判断n,m能否被除尽 if ( flag1 || !flag2 ) //能除尽表示说真话。n能被除尽(包括m能或者不能被除尽)或n不能除尽且m不能除尽 printf("%d/n",n); else if ( flag2==1&& flag1==0 ) printf("%d/n",m); } return 0; }
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