fef841b401 2020-08-01        kinaba: #include <iostream>
fef841b401 2020-08-01        kinaba: #include <sstream>
fef841b401 2020-08-01        kinaba: #include <iomanip>
fef841b401 2020-08-01        kinaba: #include <vector>
fef841b401 2020-08-01        kinaba: #include <string>
fef841b401 2020-08-01        kinaba: #include <map>
fef841b401 2020-08-01        kinaba: #include <set>
fef841b401 2020-08-01        kinaba: #include <algorithm>
fef841b401 2020-08-01        kinaba: #include <numeric>
fef841b401 2020-08-01        kinaba: #include <iterator>
fef841b401 2020-08-01        kinaba: #include <functional>
fef841b401 2020-08-01        kinaba: #include <complex>
fef841b401 2020-08-01        kinaba: #include <queue>
fef841b401 2020-08-01        kinaba: #include <stack>
fef841b401 2020-08-01        kinaba: #include <cmath>
fef841b401 2020-08-01        kinaba: #include <cassert>
fef841b401 2020-08-01        kinaba: #include <tuple>
fef841b401 2020-08-01        kinaba: using namespace std;
fef841b401 2020-08-01        kinaba: typedef long long LL;
fef841b401 2020-08-01        kinaba: typedef complex<double> CMP;
fef841b401 2020-08-01        kinaba: 
fef841b401 2020-08-01        kinaba: class FixedNumberOfDigits { public:
fef841b401 2020-08-01        kinaba: 	long long sum(int start, int step, long long numberOfDigits)
fef841b401 2020-08-01        kinaba: 	{
fef841b401 2020-08-01        kinaba: 		return solve(start, step, numberOfDigits);
fef841b401 2020-08-01        kinaba: 	}
fef841b401 2020-08-01        kinaba: 
fef841b401 2020-08-01        kinaba: 	LL solve(LL s, LL inc, LL nd) {
fef841b401 2020-08-01        kinaba: 		LL next = 10;
fef841b401 2020-08-01        kinaba: 		int w = 1;
fef841b401 2020-08-01        kinaba: 		while (next <= s) {
fef841b401 2020-08-01        kinaba: 			next *= 10;
fef841b401 2020-08-01        kinaba: 			w += 1;
fef841b401 2020-08-01        kinaba: 		}
fef841b401 2020-08-01        kinaba: 		next = (next - s + inc - 1) / inc * inc + s;
fef841b401 2020-08-01        kinaba: 		LL k = (next - s) / inc;
fef841b401 2020-08-01        kinaba: 		if (k * w >= nd) {
fef841b401 2020-08-01        kinaba: 			LL q = nd / w;
fef841b401 2020-08-01        kinaba: 			LL r = nd % w;
fef841b401 2020-08-01        kinaba: 			if (r == 0) q -= 1, r += w;
fef841b401 2020-08-01        kinaba: 
fef841b401 2020-08-01        kinaba: 			stringstream ss;
fef841b401 2020-08-01        kinaba: 			ss << (s + inc*q);
fef841b401 2020-08-01        kinaba: 			stringstream ss2;
fef841b401 2020-08-01        kinaba: 			ss2 << ss.str().substr(0, int(r));
fef841b401 2020-08-01        kinaba: 			LL ans;
fef841b401 2020-08-01        kinaba: 			ss2 >> ans;
fef841b401 2020-08-01        kinaba: 			return ans;
fef841b401 2020-08-01        kinaba: 		}
fef841b401 2020-08-01        kinaba: 		return solve(next, inc, nd - k*w);
fef841b401 2020-08-01        kinaba: 	}
fef841b401 2020-08-01        kinaba: };
fef841b401 2020-08-01        kinaba: 
fef841b401 2020-08-01        kinaba: // BEGIN CUT HERE
fef841b401 2020-08-01        kinaba: #include <ctime>
fef841b401 2020-08-01        kinaba: double start_time; string timer()
fef841b401 2020-08-01        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
fef841b401 2020-08-01        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
fef841b401 2020-08-01        kinaba:  { os << "{ ";
fef841b401 2020-08-01        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
fef841b401 2020-08-01        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
fef841b401 2020-08-01        kinaba: void verify_case(const long long& Expected, const long long& Received) {
fef841b401 2020-08-01        kinaba:  bool ok = (Expected == Received);
fef841b401 2020-08-01        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
fef841b401 2020-08-01        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
fef841b401 2020-08-01        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
fef841b401 2020-08-01        kinaba: #define END	 verify_case(_, FixedNumberOfDigits().sum(start, step, numberOfDigits));}
fef841b401 2020-08-01        kinaba: int main(){
fef841b401 2020-08-01        kinaba: 
fef841b401 2020-08-01        kinaba: CASE(0)
fef841b401 2020-08-01        kinaba: 	int start = 47;
fef841b401 2020-08-01        kinaba: 	int step = 10;
fef841b401 2020-08-01        kinaba: 	long long numberOfDigits = 7LL;
fef841b401 2020-08-01        kinaba: 	long long _ = 7LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(1)
fef841b401 2020-08-01        kinaba: 	int start = 98;
fef841b401 2020-08-01        kinaba: 	int step = 1;
fef841b401 2020-08-01        kinaba: 	long long numberOfDigits = 10LL;
fef841b401 2020-08-01        kinaba: 	long long _ = 101LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(2)
fef841b401 2020-08-01        kinaba: 	int start = 0;
fef841b401 2020-08-01        kinaba: 	int step = 1;
fef841b401 2020-08-01        kinaba: 	long long numberOfDigits = 7LL;
fef841b401 2020-08-01        kinaba: 	long long _ = 6LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(3)
fef841b401 2020-08-01        kinaba: 	int start = 123456789;
fef841b401 2020-08-01        kinaba: 	int step = 10;
fef841b401 2020-08-01        kinaba: 	long long numberOfDigits = 5LL;
fef841b401 2020-08-01        kinaba: 	long long _ = 12345LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(4)
fef841b401 2020-08-01        kinaba: 	int start = 123456789;
fef841b401 2020-08-01        kinaba: 	int step = 10;
fef841b401 2020-08-01        kinaba: 	long long numberOfDigits = 17LL;
fef841b401 2020-08-01        kinaba: 	long long _ = 12345679LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(5)
fef841b401 2020-08-01        kinaba: 	int start = 0;
fef841b401 2020-08-01        kinaba: 	int step = 1;
fef841b401 2020-08-01        kinaba: 	long long numberOfDigits = 15LL;
fef841b401 2020-08-01        kinaba: 	long long _ = 1LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(6)
fef841b401 2020-08-01        kinaba: int start = 314;
fef841b401 2020-08-01        kinaba: int step = 11;
fef841b401 2020-08-01        kinaba: long long numberOfDigits = 9LL;
fef841b401 2020-08-01        kinaba: long long _ = 336LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(6)
fef841b401 2020-08-01        kinaba: int start = 314;
fef841b401 2020-08-01        kinaba: int step = 11;
fef841b401 2020-08-01        kinaba: long long numberOfDigits = 192LL;
fef841b401 2020-08-01        kinaba: long long _ = 100LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: CASE(6)
fef841b401 2020-08-01        kinaba: int start = 1;
fef841b401 2020-08-01        kinaba: int step = 612;
fef841b401 2020-08-01        kinaba: long long numberOfDigits = 10LL;
fef841b401 2020-08-01        kinaba: long long _ = 18LL;
fef841b401 2020-08-01        kinaba: END
fef841b401 2020-08-01        kinaba: }
fef841b401 2020-08-01        kinaba: // END CUT HERE