# PROBLEM LINK:

Practice

Contest: Division 1

Contest: Division 2

Contest: Division 3

Contest: Division 4

* Author:* Abhinav Gupta

*Abhinav Sharma, Venkata Nikhil Medam*

**Testers:***Nishank Suresh*

**Editorialist:**# DIFFICULTY:

358

# PREREQUISITES:

None

# PROBLEM:

X million people live in a town. Of them, Y million leave and Z million enter. How many people are in the town now?

# EXPLANATION:

There were initially X million people in the town. After Y million leave, there were X - Y million people in it. After Z million entered, there are X - Y + Z million people in it. Thus, the solution is to print X - Y + Z.

# TIME COMPLEXITY:

\mathcal{O}(1) per test case.

# CODE:

## Tester (C++)

```
// Tester: Nikhil_Medam
#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
int t, x, y, z;
int32_t main() {
cin >> t;
while(t--) {
cin >> x >> y >> z;
cout << x - y + z << endl;
}
return 0;
}
```

## Editorialist (Python)

```
for _ in range(int(input())):
x, y, z = map(int, input().split())
print(x - y + z)
```