Submission #191343

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
191343	2020-01-14 19:13:42	AlexPop28	Strange Device (APIO19_strange_device)	C++11	100 / 100	710 ms	69020 KiB

strange_device

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#include <bits/stdc++.h>
#define dbg() cerr <<
#define name(x) (#x) << ": " << (x) << ' ' <<
// 0(B+1)    1    2    3    ...  B-2   B-1
// 1(B+1)  B+2  B+3  B+4  ...  2B-1  2B
// 2(B+1)  2B+3 ....
// ---
// X(B+1)
// vreau ca X(B+1) = 0 (mod A) => X(B+1) multiplu de A => X(B + 1) = lcm(A, B + 1)
// X(B + 1) = A * (B + 1) / GCD(A, B + 1) => X = A / GCD(A, B + 1)
using namespace std;
const long long INF = numeric_limits<long long>::max();
long long GCD(long long a, long long b) {
  if (!b) return a;
  return GCD(b, a % b);
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  auto Print = [&](long long ans) {
    cout << ans << endl;
    exit(0);
  };
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20
• Subtask 8: 30 / 30