Compilare: main.cpp: In function 'int main()': main.cpp:55:37: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'int' [-Wsign-compare] 55 | for (long unsigned int i = 0; i < m; i++) { | ~~^~~ main.cpp:60:41: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'int' [-Wsign-compare] 60 | for (long unsigned int j = 0; j < m; j++) { | ~~^~~ main.cpp:73:41: warning: comparison of integer expressions of different signedness: 'long unsigned int' and 'int' [-Wsign-compare] 73 | for (long unsigned int j = 0; j < m; j++) | ~~^~~