JS:

• credit to: chuntao_liu_0118

function arrayManipulation(n, queries) {

let arr = Array(n+1).fill(0);
// console.log("arr: ", arr);

for(let [a,b,k] of queries){
    arr[a-1] = arr[a-1] + k;
    arr[b] = arr[b] - k;
}

let acc = 0;
let result = 0;

arr.forEach(el=> {
    acc = acc+el;
    result = Math.max(result, acc)
})

// console.log(result);
return result; 

// ! end of function

}

let n1 = 5; // length of the array let queries1 = [ [ 1, 2, 100 ], [ 2, 5, 100 ], [ 3, 4, 100 ] ]; // number of queries

arrayManipulation(n1, queries1);