Go: package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
	"strings"
)

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func nextFloat64() (float64, error) {
	return strconv.ParseFloat(nextString(), 64)
}

func main() {
	scanner.Split(bufio.ScanWords)

	x, y := 0.0, 0.0
	rotate := 90.0

	for {
		line := nextString()
		if line == "0,0" {
			break
		}

		numbers := strings.Split(line, ",")
		di, _ := strconv.ParseFloat(numbers[0], 64)
		ai, _ := strconv.ParseFloat(numbers[1], 64)

		rotateRadian := math.Pi * rotate / 180.0
		x += di * math.Cos(rotateRadian)
		y += di * math.Sin(rotateRadian)

		rotate -= ai

		// fmt.Println(x, y)
	}

	fmt.Println(int(x))
	fmt.Println(int(y))
}

C++: #include <bits/stdc++.h>
#include <chrono>
using namespace std;

using _i64 = int64_t;
using _u64 = uint64_t;
using _f64 = double;

#define endl "\n"

#define _for(i, start, end) for(_i64 i = (_i64)start; i < (_i64)end; ++i)
#define _rep(i, number) _for(i, 0, number)
#define _foreach(e, data) for(auto& e : data)
#define _all(data) data.begin(), data.end()

template<typename type>
_i64 _size(const type& data) { return static_cast<_i64>(data.size()); }
template<typename type, size_t size>
_i64 _size(const type (&)[size]) { return static_cast<_i64>(size); }

enum _flag : bool { able = true, disable = false };

struct _time {
    _time(_flag flag) { check = flag; if(!check) { return; } gettime(start); }
    ~_time() {
        if(!check) { return; }; gettime(end);
        _i64 elapse = chrono::duration_cast<chrono::milliseconds>(end - start).count();
        cout << endl << "Time: " << elapse << " ms" << endl;
    }
    private:
    using _timer = chrono::time_point<chrono::system_clock>;
    _timer start, end; bool check;
    void gettime(_timer& time) { time = chrono::system_clock::now(); }
};

struct _ini { _ini() { ios::sync_with_stdio(false); cin.tie(nullptr); } } _ini;

int main() {
    {
        _time time(disable);
        _i64 d, a = 90, temp_d, temp_a; _f64 x = 0, y = 0;
        scanf("%ld,%ld", &temp_d, &temp_a);
        while(!(temp_d == 0 && temp_a == 0)) {
            d = temp_d;
            x += (_f64)d * cos(M_PI / 180 * a);
            y += (_f64)d * sin(M_PI / 180 * a);
            a -= temp_a;
            scanf("%ld,%ld", &temp_d, &temp_a);
        }
        printf("%ld\n%ld\n", (_i64)x, (_i64)y);
    }
    return 0;
}