A Very Big Sum

Read the lesson → understand the pattern → then code. Tutor works offline (built-in teacher); optional Cursor/Gemini keys upgrade chat quality.

Topic refresher: HackerRank Warmup

Classic warmup problems, taught slowly in Hindi, English, or Hinglish, then typed by you.

long long sum = 0;
for (int x : a) sum += x;
return sum;

Easy

3/12

EasyHackerRank Warmup

Same as array sum, but values are around 1e10. int overflows. Use long long.

Examples

Example 1

Input

5
1000000001 1000000002 1000000003 1000000004 1000000005

Output

5000000015

C++17Autosaves