Submission #115434

#	Time	Username	Problem	Language	Result	Execution time	Memory
115434		youngyojun	Cooking (innopolis2018_final_B)	C++11	100 / 100	3 ms	384 KiB

B

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
ll K, D, T, N, L, Ans;
 
int main() {
	cin >> K >> D >> T; T <<= 1;
	N = (K+D-1) / D;
	L = N*D + K;
	Ans += N*D * (T/L);
	T %= L;
	if(T <= K*2) Ans += T/2;
	else { Ans += T-K; T = 0; }
	cout << Ans << "." << ((T&1) ? "5" : "0") << endl;
	return 0;
}

• Subtask 1: 24 / 24
• Subtask 2: 21 / 21
• Subtask 3: 27 / 27
• Subtask 4: 28 / 28