func_code_string: #include <bits/stdc++.h>   inline int gi() {     int x = 0, f = 1;     char ch = getchar();     while (!isdigit(ch)) {       if (ch ==  - ) f = -1;       ch = getchar();     }     while (isdigit(ch)) x = x * 10 + ch -  0 , ch = getchar();     return x * f;   }   std::set<std::pair<int, int> > M;   struct yyb {     int x, y, i;     long double k, b;   } s[300010], stk[300010];   inline bool cmp_k(const yyb& a, const yyb& b) {     if (a.y != b.y)       return a.y < b.y;     else       return a.x > b.x;   }   inline bool cmp_i(const yyb& a, const yyb& b) { return a.i < b.i; }   int main() {     int n = gi();     for (int i = 1; i <= n; ++i)       s[i].x = gi(), s[i].y = gi(), s[i].i = i, s[i].k = 1000000000.0 / s[i].y,       s[i].b = 1000000000.0 / s[i].x;     std::sort(s + 1, s + n + 1, cmp_k);     int top = 0;     stk[++top] = (yyb){0, 0, 0, 1e18, 0};     for (int i = 1; i <= n; ++i) {       if (s[i].y == s[i - 1].y) continue;       while (top > 1 && stk[top].y != stk[top - 1].y &&              (-(s[i].b - stk[top].b) / (s[i].k - stk[top].k) + 1e-15 <               -(stk[top].b - stk[top - 1].b) / (stk[top].k - stk[top - 1].k))) {         --top;       }       stk[++top] = s[i];     }     std::sort(s + 1, s + n + 1, cmp_i);     for (int i = 1; i <= top; ++i) M.insert(std::make_pair(stk[i].x, stk[i].y));     for (int i = 1; i <= n; ++i)       if (M.find(std::make_pair(s[i].x, s[i].y)) != M.end()) printf( %d  , i);     return 0;   }   