Submission #598790

#	Time	Username	Problem	Language	Result	Execution time	Memory
598790		denniskim	Self Study (JOI22_ho_t2)	C++17	100 / 100	254 ms	11436 KiB

Main

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef __int128 lll;
typedef long double ld;
#define MAX 9223372036854775807LL
#define MIN -9223372036854775807LL
#define INF 0x3f3f3f3f3f3f3f3f
#define fi first
#define se second

ll n;
ll m;
ll a[300010], b[300010];
ll l, r;

int main(void)
{
	scanf("%lld %lld", &n, &m);
	
	for(ll i = 1 ; i <= n ; i++)
		scanf("%lld", &a[i]);
	
	for(ll i = 1 ; i <= n ; i++)
		scanf("%lld", &b[i]);
	
	l = 0;
	r = 1000000000000000001;
	
	while(l + 1 < r)
	{
		ll mid = (l + r) / 2;
		ll cou = 0;
		
		for(ll i = 1 ; i <= n ; i++)
		{
			if(a[i] < b[i])
				cou += (mid + b[i] - 1) / b[i];
			
			else
			{
				if((mid + a[i] - 1) / a[i] <= m)
					cou += (mid + a[i] - 1) / a[i];
				
				else
				{
					cou += m;
					cou += (mid - a[i] * m + b[i] - 1) / b[i];
				}
			}
			
			if(cou > n * m)
				break;
		}
		
		if(cou > n * m)
			r = mid;
		else
			l = mid;
	}
	
	printf("%lld", l);
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  scanf("%lld %lld", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~
Main.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   scanf("%lld", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~~~
Main.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   scanf("%lld", &b[i]);
      |   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29
• Subtask 5: 9 / 9