#include <stdio.h>
void main(){
	int i,j,n,len,min;
	char input[100],c;
	__int64 w,sum;
	int a;
	while(scanf("%s",&input)==1){
		c = 0;
		for(i=0; input[i]!='\0'&&i<100; i++) {
			if(c<input[i]) c=input[i];
		}
		len = i;
		if(len==0) break;

		if(c>='0' && c<='9') min = c-'0';
		else if(c>='A' && c<='Z') min = c-'A'+10;
		else min = c-'a'+36;
		min++;
		min = (min<2)?2:min;

		for(n=min; n<=62; n++) {
			sum = 0;
			w = 1;
			for(j= len-1; j>=0; j--) {
				c = input[j];
				if(c>='0' && c<='9') a = c-'0';
				else if(c>='A' && c<='Z') a = c-'A'+10;
				else a = c-'a'+36;
				sum += a*w;
				w *= n;
			}
			if(sum%(n-1)==0) break;
		}
		if(n==63) printf("such number is impossible!\n");
		else printf("%d\n",n);
	}

}

• 都用全部变量,就能看到是什么错了 (844) hawk 2004-03-25 22:53:44