Mountain Biking

//
//  B.cpp
//  
//
//  Created by 赵洋 on 15/11/25.
//
//

#include <iostream>
#include <cmath>
#include <vector>
#include <iomanip>

#define PI 3.14159265

using namespace std;

int main(){
    int N;
    double g;
    cin >> N >> g;
    vector<double> H(N, 0);
//    cout << "N = " << N << endl;
    for(int i = N-1; i >= 0; --i){
        int D, theta;
        cin >> D >> theta;
        H[i] = D * sin((90-theta) * PI / 180.0);
//        cout << H[i] << endl;
    }
    
    for(int i = 1; i < N; ++i){
        H[i] += H[i-1];
//        cout << H[i] << endl;
    }
    
    for(int i = N-1; i >= 0; --i){
        cout << setprecision(10) << sqrt(2 * g * H[i]) << endl;
    }
    
    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED