Bahosain and Digits
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#include<stdio.h>#include<string.h>#include<math.h>#include<queue>#include<vector>#include<iostream>#include<string>#include<set>#include<map>#include<algorithm>using namespace std;#pragma comment(linker, "/STACK:1024000000,1024000000")#define nn 260#define LL long long#define ULL unsiged long long#define mod 0x7fffffff#define inf oxfffffffffff#define lson l,mid,rt<<1#define rson mid+1,r,rt<<1|1// ((`'-"` `""-'`))// ) - - (// / (o _ o) \// \ ( 0 ) /// _'-.._ '=' _..-'_// /`;#'#'#. -. #'#'#;`\// \_)) '#' ((_/// #. ☆ ☆ ☆ .#// '#. 求 A C! .#'// /'#. .#'\// _\\'#. .#'//_// (((___)'#'(___)))int a[nn],len,f[nn];int calc(int k)//验证答案{ memset(f,0,sizeof(f)); int sum=0; bool fuck; for(int i=0;i<10;i++)//枚举最终整个序列的值 { sum=0; for(int j=0;j+k<=len;j++) { f[j]=(i-(a[j]+sum)%10+20)%10; sum+=f[j]; if(j-k+1>=0) sum-=f[j-k+1]; } fuck=false; for(int j=len-k+1;j<len;j++) { if((a[j]+sum)%10!=i) { fuck=true; break; } if(j-k+1>=0) sum-=f[j-k+1]; } if(!fuck) return k; } return -1;}int main(){ int t; scanf("%d",&t); while(t--) { char s[nn]; scanf("%s",s); len=strlen(s); for(int i=0;i<len;i++) a[i]=s[i]-'0'; for(int k=len;k>=1;k--)//枚举答案 { int v=calc(k); if(v!=-1) { printf("%d\n",k); break; } } } return 0;}
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