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| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef pair<string, string> pss;
#define rep(i, a, n) for (int i = a; i < n; ++i)
#define per(i, a, n) for (int i = n - 1; i >= a; --i)
#define fi first
#define se second
#define mp make_pair
#define np next_permutation
#define pb push_back
#define tol(x, y) std::transform(x.begin(), x.end(), y.begin(), ::tolower)
#define tou(x, y) std::transform(x.begin(), x.end(), y.begin(), ::toupper)
#define all(x) x.begin(), x.end()
#define INF 0x3f3f3f3f
#define EPS 1e-8
int m, t;
ll n;
double ans;
int main()
{
ios::sync_with_stdio(false);
while (cin >> n) {
ans = 0;
ll i;
for (i = 1; ans + 1.0 / i <= n + EPS; i++) {
ans += 1.0 / i;
}
cout << i << endl;
}
}
|