func_code_string: #include <bits/stdc++.h>   int N, XL, XR, YL, YR, SX, SY, VX, VY;   long long LN, LD = 1, RN = 1000000000000LL, RD = 1;   inline bool cmp(long long a, long long b, long long c, long long d) {     return a * d < b * c;   }   void LIM(int v, int s, int l, int r) {     if (v == 0) {       if (s <= l || s >= r) {         puts( -1 );         exit(0);       }     } else {       l -= s;       r -= s;       if (v < 0) {         int tmp = l;         l = r;         r = tmp;         l = -l;         r = -r;         v = -v;       }       if (cmp(LN, LD, l, v)) {         LN = l;         LD = v;       }       if (cmp(r, v, RN, RD)) {         RN = r;         RD = v;       }     }   }   int main() {     for (scanf( %d%d%d%d%d , &N, &XL, &YL, &XR, &YR); N--;) {       scanf( %d%d%d%d , &SX, &SY, &VX, &VY);       LIM(VX, SX, XL, XR);       LIM(VY, SY, YL, YR);     }     if (cmp(LN, LD, RN, RD))       printf( %.12f n , (double)LN / LD);     else       puts( -1 );     return 0;   }   