func_code_string: #include <bits/stdc++.h>   using namespace std;   struct bus {     double t, v;     double cost, time;   };   bus bus[100000];   int main() {     int n, a, d;     scanf( %d%d%d , &n, &a, &d);     double fastest = 0.0;     double x, y;     for (int i = 0; i < n; i++) {       scanf( %lf%lf , &bus[i].t, &bus[i].v);       x = (d - bus[i].v * bus[i].v / (2.0 * a)) / bus[i].v;       y = bus[i].t + (bus[i].v / a) + x;       if (x < 0) {         y = bus[i].t + sqrt(2.0 * d / (double)a);       }       if (fastest <= y) fastest = y;       printf( %.10f n , fastest);     }   }   