Compilare: main.cpp: In function 'void init()': main.cpp:6:29: warning: comparison of integer expressions of different signedness: 'ull' {aka 'long long unsigned int'} and 'int' [-Wsign-compare] 6 | #define ft(n) for(ull i=1; i<=n; i++) | ^ main.cpp:21:9: note: in expansion of macro 'ft' 21 | ft(n) | ^~ main.cpp: In function 'int main()': main.cpp:6:29: warning: comparison of integer expressions of different signedness: 'ull' {aka 'long long unsigned int'} and 'int' [-Wsign-compare] 6 | #define ft(n) for(ull i=1; i<=n; i++) | ^ main.cpp:70:9: note: in expansion of macro 'ft' 70 | ft(m) | ^~