func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, k, h;   struct Node {     int m, v;     int id;     bool operator<(const Node &x) const {       if (m != x.m) return m < x.m;       return v < x.v;     }   } q[100005];   bool ok(double times) {     int i, j;     for (j = 1, i = 0; i < n; i++) {       if (q[i].v * times - (double)j * h >= -1e-9) j++;       if (j > k) return true;     }     return false;   }   int main() {     int i, j;     cin >> n >> k >> h;     for (i = 0; i < n; i++) cin >> q[i].m;     for (i = 0; i < n; i++) {       cin >> q[i].v;       q[i].id = i + 1;     }     sort(q, q + n);     double l, r, mid;     l = 0, r = 1e20;     for (int i = 0; i < 200; i++) {       mid = (l + r) * 0.5;       if (!ok(mid))         l = mid;       else         r = mid;     }     j = 1;     for (i = 0; i < n; i++) {       if (q[i].v * r - (double)j * h >= -1e-9) {         cout << q[i].id <<    ;         j++;       }       if (j > k) break;     }   }   