Submission #64518060

Source Code Expand

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#include<cstdio>
#include<string>
#include<algorithm>
#include<iostream>
using namespace std;
long long a=2,b=1e9,n,l,r,mid,ans;
int main() {
  scanf("%lld",&n);
  for(;a<=n;a*=2) {
    l=1;
    r=b;
    while(l<=r) {
      mid=(l+r)/2;
      if((2*mid-1)*(2*mid-1)*a<=n) l=mid+1;
      else r=mid-1;
    }
    b=r;
    ans+=b;
  }
  printf("%lld\n",ans);
  return 0;
 
 
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#include<cstdio>
#include<string>
#include<algorithm>
#include<iostream>
using namespace std;
long long a=2,b=1e9,n,l,r,mid,ans;
int main() {
	scanf("%lld",&n);
	for(;a<=n;a*=2) {
		l=1;
		r=b;
		while(l<=r) {
			mid=(l+r)/2;
			if((2*mid-1)*(2*mid-1)*a<=n) l=mid+1;
			else r=mid-1;
		}
		b=r;
		ans+=b;
	}
	printf("%lld\n",ans);
	return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:8:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    8 |         scanf("%lld",&n);
      |         ~~~~~^~~~~~~~~~~

Judge Result