Spiraali

#include <bits/stdc++.h>

#define DIR_UP 0
#define DIR_DOWN 1
#define DIR_LEFT 2
#define DIR_RIGHT 3

using namespace std;

int main() {
    int size, count;

    cin >> size >> count;
    int spiral[size][size];

    int x = 0, y = 0, layer = 0;
    int dir = DIR_DOWN;
    for (int i = 0; i < pow(size, 2); i++) {
        spiral[x][y] = i + 1;

        switch (dir) {
            case DIR_UP:
                if (y == layer) {
                    x -= 1;
                    dir = DIR_LEFT;
                } else {
                    y -= 1;
                }
                break;
            case DIR_DOWN:
                if (y == size - layer - 1) {
                    x += 1;
                    dir = DIR_RIGHT;
                } else {
                    y += 1;
                }
                break;
            case DIR_LEFT:
                if (x == layer + 1) {
                    y += 1;
                    layer += 1;
                    dir = DIR_DOWN;
                } else {
                    x -= 1;
                }
                break;
            case DIR_RIGHT:
                if (x == size - layer - 1) {
                    y -= 1;
                    dir = DIR_UP;
                } else {
                    x += 1;
                }
                break;
        }
    }

    /*
    for (y = 0; y < size; y++) {
        for (x = 0; x < size; x++) {
            cout << spiral[x][y] << " ";
        }
        cout << endl;
    }
     */

    for (int j = 0; j < count; j++) {
        cin >> x >> y;
        cout << spiral[y - 1][x - 1] << endl;
    }

    return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: RUNTIME ERROR