#include <iostream>
#include <vector>
 
int main() {
    int n, m;
    std::cout << "Введите размерность массива (n m): ";
    std::cin >> n >> m;
 
    std::vector<std::vector<int>> array(n, std::vector<int>(m));
    std::cout << "Введите элементы массива:\n";
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            std::cin >> array[i][j];
        }
    }
 
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            array[i][j] *= array[i][j]; // Квадрат элемента
        }
    }
 
    std::cout << "Массив после замены элементов на их квадраты:\n";
    for (const auto& row : array) {
        for (const auto& elem : row) {
            std::cout << elem << " ";
        }
        std::cout << std::endl;
    }
 
    return 0;
}

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

NQo1IDIKMiA0CjMgLTMKMiAyCjQgNA==

5
5 2
2 4
3 -3
2 2
4 4