Compilare: main.cpp: In function 'int main()': main.cpp:11:23: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 11 | for (int i = 0; i < N; ++i) { | ~~^~~ main.cpp:12:27: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 12 | for (int j = 0; j < N; ++j) { | ~~^~~ main.cpp:16:31: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 16 | for (int power = 0; power < logN; ++power) { | ~~~~~~^~~~~~ main.cpp:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 17 | for (int i = 0; i < N; ++i) { | ~~^~~ main.cpp:18:31: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 18 | for (int j = 0; j < N; ++j) { | ~~^~~ main.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 27 | for (int i = 0; i < M; ++i) { | ~~^~~