Säähavainnot

input/code.cpp: In function 'void trig(double*)':
input/code.cpp:34:18: warning: variable 'c' set but not used [-Wunused-but-set-variable]
   34 |     double a, b, c, d;
      |                  ^
input/code.cpp:34:21: warning: variable 'd' set but not used [-Wunused-but-set-variable]
   34 |     double a, b, c, d;
      |                     ^

#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <vector>
#include <numeric>
#include <numbers>
#include <cmath>
 
//#define TEST
 
using namespace std;
 
stringstream ss;
 
// y=a*sin(b*x+c)+d
// 
// H=a+d
// H-a=d
//
// L = -a+d
// L -d = -a
// d-L = a
// H-a-L = a
// H-L = 2a
// (H-L)/2 = a
// 
// pi/2 = bx+c 
// pi/2 - bx = c 
 
 
void trig(double* data)
{
    double a, b, c, d;
 
    b = 2.0 * numbers::pi / 24.0;
 
    double smallestVal = 10000;
    double largestVal = -10000;
    double lowAmpl;
 
    for (int i = 0; i < 24; i++)
    {
        if (smallestVal > data[i])
        {
            smallestVal =  data[i];
            lowAmpl = i;
        }
        if (largestVal < data[i])
        {
            largestVal = data[i];
        }
    }
 
    a = (largestVal - smallestVal) / 2;
    d = largestVal - a;
    c = 3 * numbers::pi / 2 - (b * lowAmpl);
 
    for (int i = 0; i < 12; i++)
    {
        ss << data[i] << " ";
    }
    ss << "\n";
 
}
 
int main()
{
    int n;
 
#ifdef TEST
    fstream f;
 
    f.open(__FILE__ "/../../sample-data.txt");
 
    f >> n;
 
    for (int i = 0; i < n; i++)
    {
        vector<double> dt;
 
        for (int j = 0; j < 36; j++)
        {
            double v;
            f >> v;
            dt.push_back(v);
        }
 
        trig(&dt[0]);
    }
 
    f.close();
#else
    cin >> n;
 
    for (int i = 0; i < n; i++)
    {
        vector<double> dt;
 
        for (int j = 0; j < 24; j++)
        {
            double v;
            cin >> v;
            dt.push_back(v);
        }
 
        trig(&dt[0]);
    }
 
    cout << ss.str();
#endif
 
    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