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input/code.cpp: In function 'll f(int)':
input/code.cpp:14:17: error: 'j' was not declared in this scope
     if (num[i / j] != 0)
                 ^

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

const int N = 1 << 8;
ll num[N];

ll f(int i)
{
    if (i == 0) return 0;
    if (i == 1) return 1;

    if (num[i / j] != 0)
    {
        return num[i / j];
    }
    ll s = 0;
    int j = 2;
    while (j <= i)
    {
        ll r = f(i / j);
        num[i / j] = r;
        s += r;
        j++;
    }
    return s;
}

int main(int argc, char **argv)
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int i;
    cin >> i;

    cout << f(i) << "\n";
}