Given an unsorted array A of size N of non-negative integers, find a continuous sub-array which adds to a given number S.
Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case consists of two lines. The first line of each test case is N and S, where N is the size of array and S is the sum. The second line of each test case contains N space separated integers denoting the array elements.
Output:
For each testcase, in a new line, print the starting and ending positions(1 indexing) of first such occuring subarray from the left if sum equals to subarray, else print -1.
Constraints:
1 <= T <= 100
1 <= N <= 107
1 <= Ai <= 1010
Example:
Input:
2
5 12
1 2 3 7 5
10 15
1 2 3 4 5 6 7 8 9 10
Output:
2 4
1 5
My Code:
#include <iostream>
using namespace std;
int main() {
int t, n, s, a[1000], result[1000];
cin >> t;
for (int i = 0; i < t; i++) {
result[i * 2] = -1;
cin >> n >> s;
for (int j = 0; j < n; j++) {
cin >> a[j];
}
int flag = 0;
for (int j = 0; j < n; j++) {
if (flag == 0) {
int sum = 0;
for (int k = j; k < n && sum < s; k++) {
sum += a[k];
if (sum == s) {
result[i * 2] = j + 1;
result[(i * 2) + 1] = k + 1;
flag = 1;
break;
}
}
}
}
}
for (int i = 0; i < t * 2; i += 2) {
if (result[i] != -1) {
cout << result[i] << " " << result[i + 1] << endl;
} else {
cout << result[i];
}
}
}
Result:
Wrong Answer. !!!Wrong Answer
Possibly your code doesn't work correctly for multiple test-cases (TCs).
The first test case where your code failed:
Input:
4 225
9 45 10 190
Its Correct output is:
-1
And Your Code's output is:
-1-1-1-138 42
