1 #include<iostream> 2 #include<cstring> 3 using namespace std; 4 string sum; 5 const int max_len = 110; 6 string tool(string a){ 7 int dif = max_len - a.length(); 8 string s = ""; 9 for(int i=0;i<dif;i++){ 10 s += '0'; 11 } 12 s+=a; 13 return s; 14 } 15 void solve(string a){ 16 a = tool(a); 17 sum = tool(sum); 18 string ssum; 19 ssum = tool(ssum); 20 21 for(int i=max_len-1;i>=1;i--){ 22 int temp = (sum[i] -'0') + (a[i] - '0'); 23 int c = ssum[i]-'0'+temp; 24 ssum[i] = c%10 + '0'; 25 ssum[i-1] = (ssum[i-1]-'0'+c/10) + '0'; 26 } 27 28 sum = ssum; 29 } 30 int main(){ 31 string a; sum = ""; 32 while(cin>>a && a!="0"){ 33 solve(a); 34 } 35 int i; 36 for(i=0;i<max_len;i++){ 37 if(sum[i]!='0') break; 38 } 39 for(int j=i;j<max_len;j++){ 40 cout<<sum[j]; 41 }cout<<endl; 42 }