Submission #140577

#	Time	Username	Problem	Language	Result	Execution time	Memory
140577		luciocf	Strange Device (APIO19_strange_device)	C++14	5 / 100	2 ms	396 KiB

strange_device

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main(void)
{
	int n;
	ll A, B;

	scanf("%d %lld %lld", &n, &A, &B);

	ll l, r;
	scanf("%lld %lld", &l, &r);

	ll x = (r-l+1)/B;
	ll g = A/__gcd(B+1, A);

	if (x >= g)
	{
		printf("%lld\n", B*g);
	}
	else
	{
		printf("%lld\n", r-l+1);
	}
}

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %lld %lld", &n, &A, &B);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld", &l, &r);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 5 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30