Compilare: main.cpp: In function 'void color_bfs2(uint64_t, uint64_t, uint64_t)': main.cpp:58:14: warning: unused variable 'ma' [-Wunused-variable] 58 | uint64_t ma = 0; | ^~ main.cpp: In function 'void read()': main.cpp:88:23: warning: comparison of integer expressions of different signedness: 'int' and 'uint64_t' {aka 'long unsigned int'} [-Wsign-compare] 88 | for (int i = 1; i <= m; ++i) | ~~^~~~ main.cpp: In function 'void solve()': main.cpp:115:23: warning: comparison of integer expressions of different signedness: 'int' and 'uint64_t' {aka 'long unsigned int'} [-Wsign-compare] 115 | for (int i = 1; i <= n; ++i) | ~~^~~~ main.cpp:127:22: warning: comparison of integer expressions of different signedness: 'int' and 'uint64_t' {aka 'long unsigned int'} [-Wsign-compare] 127 | for(int i = 1; i <= n; ++i) | ~~^~~~