#include using namespace std; #define int long long int MOD1=1000000000; int MOD2=1000000007; string s,t; int dp1[114514]; int dp2[114514]; int calc2_1(int x,int mod){ t=""; int res=0; int y=(x+1)/2; for(int i=0;i('0'+j)) (res+=dp1[y-(i+1)])%=mod; if(i==y-1&&s[i]=='0'+j){ string u=t; reverse(u.begin(),u.end()); if(x&1) t.pop_back(); t+=u; //cout<=0) res++; } } res%=mod; } return res; } int calc2_2(int x,int mod){ t=""; int res=0; int y=(x+1)/2; for(int i=0;i('0'+j)) (res+=dp2[y-(i+1)])%=mod; if(i==y-1&&s[i]=='0'+j){ string u=t; reverse(u.begin(),u.end()); if(x&1) t.pop_back(); t+=u; //cout<=0) res++; } } res%=mod; } return res; } signed main(){ cin>>s; int ans1=0,ans2=0; dp1[0]=dp2[0]=1; for(int i=1;i<114514;i++){ (dp1[i]=dp1[i-1]*10)%=MOD1; (dp2[i]=dp2[i-1]*10)%=MOD2; //if(i<100) cout<