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c_cpp
a year ago
542 B
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#include <bits/stdc++.h> using namespace std; #define ll long long int tt, tc; void solve() { int n; cin >> n; ll v; cin >> v; // d/v <= a[i], d >= v * a[i] vector<ll> a(n), d(n); for (ll& u : a) cin >> u; for (ll& u : d) cin >> u; int ans = 0; for (int i = 0; i < n; i++) { if (d[i] <= v * a[i]) ans += 1; } cout << ans << "\n"; } int main() { ios::sync_with_stdio(0); cin.tie(0); tt = 1, tc = 1; // cin >> tt; while (tt--) solve(), tc++; }
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