Submission #6503004

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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;
ll mj(ll b,ll n)
{
	if(n<b)
	{
		return n;
	}
	else
	{
		return mj(b,n/b)+n%b;
	}
}
void work()
{
    for(ll i=2; i*i<=sqrt(n)+1; i++)//枚举
    {
        ll b=i;
        if(s==mj(b,n))
        	ok=true;
        if(ok)
            return ;
    }
    ll del=n-s;
    for(ll i=1;i*i<=n;i++)
    {
        if(del%i==0)
        {
        	if(mj(del/i+1,n)==s)
        	{
        		ok=true;
        		ans=min(ans,del/i+1);
			}
        }
    }
    return ;
}
int main()
{
    scanf("%lld%lld",&n,&s);
    if(s>n)
    {
        printf("-1");
        return 0;
    }
    if(s==n)
    {
    	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:47:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld",&n,&s);
                            ^

Judge Result