Basic_Data_Structures/Sum_Without_Leaf.cpp at main · MohammadFahad1/Basic_Data_Structures · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
#include <bits/stdc++.h>
using namespace std;

class Node
{
public:
    int val;
    Node *left;
    Node *right;
    Node(int val)
    {
        this->val = val;
        this->left = NULL;
        this->right = NULL;
    }
};

Node *input_binary_tree()
{
    int val;
    cin >> val;
    Node *root;
    if (val == -1)
        root = NULL;
    else
        root = new Node(val);
    queue<Node *> q;
    if (root)
        q.push(root);

    while (!q.empty())
    {
        Node *f = q.front();
        q.pop();

        int l, r;
        cin >> l >> r;

        Node *left, *right;
        if (l == -1)
            left = NULL;
        else
            left = new Node(l);

        if (r == -1)
            right = NULL;
        else
            right = new Node(r);

        f->left = left;
        f->right = right;

        if (f->left)
            q.push(f->left);
        if (f->right)
            q.push(f->right);
    }
    return root;
}

int sumWithoutLeaf(Node *root)
{
    if (root == NULL)
        return 0;

    if (root->left == NULL && root->right == NULL)
        return 0;

    int l = sumWithoutLeaf(root->left);
    int r = sumWithoutLeaf(root->right);

    return root->val + l + r;
}

int main()
{
    Node *root = input_binary_tree();
    int sum = sumWithoutLeaf(root);
    cout << sum;

    return 0;
}