Submission #6503808

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Source Code Expand

#include <cstdio>
#include <cmath>
#define ll long long
using namespace std;

ll n, s;

inline bool is_jz(ll x, int b) {
    ll sum = 0;
    while (x)
        sum += x % b, x /= b;
    return sum == s;
}

int main() {
    scanf("%lld %lld", &n, &s);
    if(n == s) {
        printf("1");
        return 0;
    }
    int sqr = sqrt(n);
    for (ll i = 2; i <= sqr; ++i)
        if (is_jz(n, i)) {
            printf("%lld", i);
            return 0;
        }
    for (ll i = sqr; i; --i) {
    	ll b = (n - s) / i + 1;
		if (b <= i)
			break;
        if ((n - s) % i == 0 && n % b + i == s) {
            printf("%lld", (n - s) / i + 1);
            return 0;
        }
	}
    printf("-1");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:16:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld", &n, &s);
                               ^

Judge Result