func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, a, d, t, v;   double tim[200000];   double jisuan(double a, double vmax, double s) {     double t = (vmax) / a;     if (0.5 * a * t * t > s)       return sqrt(s * 2 / a);     else       return t + (s - 0.5 * a * t * t) / vmax;   }   int main() {     scanf( %d%d%d , &n, &a, &d);     scanf( %d%d , &t, &v);     tim[1] = t + jisuan(a, v, d);     for (int i = 2; i <= n; ++i) {       scanf( %d%d , &t, &v);       tim[i] = t + jisuan(a, v, d);       if (tim[i] < tim[i - 1]) tim[i] = tim[i - 1];     }     for (int i = 1; i <= n; ++i) printf( %.10lf n , tim[i]);     return 0;   }   