Submission #1497648

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Source Code Expand

#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
typedef unsigned long long LL;

const int maxn = 100009;
LL n, A, B, h[maxn];
LL l = 0, r = 9e18, mid;

bool check(LL x){
	LL res = 0;
	for (LL i=1; i<=n; i++)
		if (h[i] > B*x)
			res += (h[i]-B*x+A-B-1)/(A-B);
	return res <= x;
}

int main(){
	scanf("%llu%llu%llu", &n, &A, &B);
	for (LL i=1; i<=n; i++) scanf("%llu", &h[i]);
	while (l < r){
		mid = (l+r) >> 1;
		if (check(mid)) r = mid;
		else l = mid + 1;
	}
	printf("%llu\n", l);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%llu%llu%llu", &n, &A, &B);
                                   ^
./Main.cpp:21:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for (LL i=1; i<=n; i++) scanf("%llu", &h[i]);
                                              ^

Judge Result