/**

* @param {number} m

* @param {number} n

* @return {number}

*/

var uniquePaths = function(m, n) {

const list = [];

for (let i = 0; i < n; i++) {

list.push([]);

for (let j = 0; j < m; j++) {

if (i === 0 || j === 0) {

list[i][j] = 1;

} else {

list[i][j] = list[i-1][j] + list[i][j-1];

}

}

}

return list[n-1][m-1];

};