#include <iostream>
using namespace std;
 
int main()
{
    int field[4][4] = { { 0, 1, 2, 3 }, { 4, 5, 6, 7 },
                      { 8, 9, 10, 11 }, { 12, 13, 14, 15 } };
    auto lambda = [field]() {
            int max = 0;
            for (int a = 0; a < 4; a++)
                for (int b = 0; b < 4; b++)
                    if (field[a][b] > max)
                        max = field[a][b];
            return max;
        };
    int res = lambda();
    cout << res;
    return 0;
}

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