You are combining 2 numbers into single long digit. I wanted to know, how these tricks do people come to know? xxbrits

def queensAttack(n, k, r_q, c_q, obstacles):

obs_map = {}
for obs in obstacles:
    obs_map[obs[0], obs[1]] = 1

deltas = [0, 1, -1]
directions = []
for i in deltas:
    for j in deltas:
        if i != 0 or j != 0:
            directions.append((i, j))


count = 0
for direction in directions:
    i, j = r_q + direction[0], c_q + direction[1]
    while obs_map.get((i, j)) is None and i > 0 and j > 0 and i < n+1 and j < n+1:

        count += 1
        i += direction[0]
        j += direction[1]
return count

JS/Javascript solution:-

function queensAttack(n, k, r_q, c_q, obstacles) {
    let canQueenGo = 0;
    const obs = new Set();
    obstacles.forEach(v => obs.add(`${v[0]},${v[1]}`));
    function doTheAttack(dirX,dirY) {
        let posX = r_q + dirX;
        let posY = c_q + dirY;
        while (posX <= n && posY <= n && posX > 0 && posY > 0) {
            if (obs.has(`${posX},${posY}`)) return;
            canQueenGo++;
            posX += dirX;
            posY += dirY;
        }
    }
    for (let directionX = -1; directionX <= 1; directionX++) {
        for (let directionY = -1; directionY <= 1; directionY++) {
            if (directionY === 0 && directionX === 0) {   
                continue;
            } else {
                doTheAttack(directionX, directionY)
            }
        }
    }
    return canQueenGo;
}

include

include

include

include

include

include

int main() {

int n, k, rq, cq;

scanf("%d%d", &n, &k);
scanf("%d%d", &rq, &cq);

int right = n - cq;
int left = cq - 1;
int up = n - rq;
int down = rq - 1;

int leftup, leftdown, rightup, rightdown;

if (left < up) {
    leftup = left;
} 
else {
    leftup = up;
}

if (left < down) {
    leftdown = left;
} 
else {
    leftdown = down;
}

if (right < up) {
    rightup = right;
} 
else {
    rightup = up;
}

if (right < down) {
    rightdown = right;
} 
else {
    rightdown = down;
}

for (int i = 0; i < k; ++i) {

    int ro, co;
    scanf("%d%d", &ro, &co);

    if (rq == ro && cq > co) {
        if (cq - co - 1 < left) left = cq - co - 1;
    } 
    else if (rq == ro && cq < co) {
        if (co - cq - 1 < right) right = co - cq - 1;
    } 
    else if (cq == co && rq < ro) {
        if (ro - rq - 1 < up) up = ro - rq - 1;
    } 
    else if (cq == co && rq > ro) {
        if (rq - ro - 1 < down) down = rq - ro - 1;
    } 
    else if (co < cq && ro > rq && (cq - co) == (ro - rq)) {
        if (ro - rq - 1 < leftup) leftup = ro - rq - 1;
    } 
    else if (co < cq && rq > ro && (cq - co) == (rq - ro)) {
        if (cq - co - 1 < leftdown) leftdown = cq - co - 1;
    } 
    else if (co > cq && rq > ro && (co - cq) == (rq - ro)) {
        if (co - cq - 1 < rightdown) rightdown = co - cq - 1;
    } 
    else if (co > cq && rq < ro && (co - cq) == (ro - rq)) {
        if (ro - rq - 1 < rightup) rightup = ro - rq - 1;
    }
}

printf("%d", right + left + up + down + leftup + leftdown + rightup + rightdown);
return 0;

}