Compilare: main.cpp: In function 'bool within(int, int)': main.cpp:37:25: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 37 | return (x >= 0 && x < N && y >= 0 && y < N); | ~~^~~ main.cpp:37:44: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 37 | return (x >= 0 && x < N && y >= 0 && y < N); | ~~^~~ main.cpp: In function 'int main()': main.cpp:95:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 95 | for(int i = 0; i < N; i++) | ~~^~~ main.cpp:96:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 96 | for(int j = 0; j < N; j++) { | ~~^~~