hdu-2106

#include<iostream>#include<fstream>using namespace std;int pow(int a,int b){int i,x=1;for(i=1;i<=b;++i)x*=a;return x;}int main(){int a,b,n;char c,d;//fstream cin("d:\\test.txt");while(cin>>n){int sum=0;while(n--){int t=0;cin>>a>>c>>b>>d;while(a){sum+=a%10*pow(b,t++);a/=10;}}cout<<sum<<endl;}return 0;}