Submission #6502147

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Source Code Expand

#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
using namespace std;
#define ll long long
ll n,s;
ll ans;
bool ok;
void mj(ll b)
{
	ll tem=n;
	ll sum=0;
	while(tem)
	{
		sum+=tem%b;
		tem/=b;
	}
	if(sum==s)
	{
		ans=b;
		ok=true;
	}
	return ;
}
void work()
{
	for(ll i=2; i<=sqrt(n)+1; i++)
	{
		ll b=i;
		mj(b);
		if(ok)
			return ;
	}
	ll del=n-s;
	for(ll i=1;i*i<=n;i++)
	{
		if(del%i==0)
		{
			ll t=del/i+1;
			if((t-1)*i==del)
			{
				ans=t;
				ok=true;
			}
		}
	}
	return ;
}
int main()
{
	scanf("%lld%lld",&n,&s);
	if( s > n )
	{
	return puts( "-1" );	
	 } 
	if( s == n ) 
	{
		return printf( "%lld\n" , n + 1 );
	}
	work();
	if(ok)
	{
		printf("%lld\n",ans);
	}
	else
	{
		printf("-1\n");
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:52:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld",&n,&s);
                         ^

Judge Result