USACO 1.2.5 Dual Palindromes
2013-08-07 19:15
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USACO 1.2.5 DualPalindromes
为颈椎+1 !为盲打+1 !
题意:找出在大于某个数的范围内一定数目的满足要求的回文数,要求就是这个用十进制表示的数字用2~10进制表示时至少存在两个回文数。
细节+代码:
为颈椎+1 !为盲打+1 !
题意:找出在大于某个数的范围内一定数目的满足要求的回文数,要求就是这个用十进制表示的数字用2~10进制表示时至少存在两个回文数。
细节+代码:
/* ID: 15257142 LANG: C TASK: dualpal */ #include<stdio.h> #include<string.h> int trans(int num,int n){ int k,i,g; char b[100],c[100],d[100]; k = -1; while(num>0){ k++; b[k] = (num%n)+'0'; num = num/n; } for(i = 0;i<=k/2;i++) c[i] = b[i]; c[i] = '\0'; if(k%2==1) g = k/2+1; else g = k/2; for(i = k;i>=g;i--) d[k-i] = b[i]; d[k-i] = '\0'; if(strcmp(c,d)==0&&c[0]!=0) return 1; else return 0; } int main(){ freopen("dualpal.in","r",stdin); freopen("dualpal.out","w",stdout); int n,s,i,j,every,count; scanf("%d%d",&n,&s); count = 0; for(i = s+1;;i++){ every = 0; for(j = 2;j<=10;j++){ if(trans(i,j)==1) every++; if(every==2){ printf("%d\n",i); count++; break; } } if(count==n) break; } fclose(stdin); fclose(stdout); return 0; }
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