Видео ютуба по тегу Summation Of Elements Of A 2D Vector Into A 1D Vector. C

How to Sum Elements of a 2D Vector into a 1D Vector in C++

How to find sum of elements present in vector in one line in C++

Упрощенное сложение и вычитание векторов

2D Vectors in C++

C 2D arrays ⬜

2D Arrays in C++ | Part 1 | DSA Series by Shradha Ma'am

C++ Tutorial for Beginners - Edabit - Get the Sum of All Vector Elements

Addition of Vectors By Means of Components - Physics

The Vector Type in C++

Vectors - C++ Tutorial 20

how to find the sum or the average of vectors in c++ #cppprigramming

Sum, Subtract, product, and divide of vectors - Element by Element in C#

Nesting In Vectors: C++ STL For Beginners | Competitive Programming Course | EP 22