func_code_string: #include <bits/stdc++.h>   using namespace std;   struct Lem {     int m, v, id;     bool operator<(Lem b) const { return m < b.m || (m == b.m && v < b.v); }   };   int n, k, h;   Lem a[(100000 + 10)];   bool can(double t) {     int j = k;     for (int i(n - 1), _l(0); i >= _l; --i) {       if (j > 0 && (double)j * h / a[i].v - t <= -1e-10) j--;     }     return j == 0;   }   void putAns(double t) {     int ans[(100000 + 10)];     int j = k;     for (int i(n - 1), _l(0); i >= _l; --i) {       if (j > 0 && (double)j * h / a[i].v - t <= -1e-10) ans[--j] = a[i].id;     }     for (int i(0), _n(k - 1); i < _n; ++i) printf( %d  , ans[i]);     printf( %d n , (ans[k - 1]));   }   int main() {     scanf( %d , &(n)), scanf( %d , &(k)), scanf( %d , &(h));     for (int i(0), _n(n); i < _n; ++i) scanf( %d , &(a[i].m)), a[i].id = i + 1;     for (int i(0), _n(n); i < _n; ++i) scanf( %d , &(a[i].v));     sort(a, a + n);     double l = 1e-10, r = 1e10;     int cnt = 100;     while (cnt--) {       double mid = (l + r) / 2.0;       if (can(mid))         r = mid;       else         l = mid;     }     putAns(r);     return 0;   }   