Compilare: main.cpp: In function 'int main()': main.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 27 | for(int i = 1; i <= N; i++) { | ~~^~~~ main.cpp:32:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 32 | for(int i = 1; i <= N; i++) { | ~~^~~~ main.cpp:36:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 36 | for(int j = i; j <= N; j++) { | ~~^~~~