Compilare: main.cpp: In function 'void bfs(int, int, int*)': main.cpp:35:17: warning: unused variable 'c' [-Wunused-variable] 35 | int i, nnext, c; | ^ main.cpp: In function 'int main()': main.cpp:80:28: warning: unused variable 'j' [-Wunused-variable] 80 | int n, m, k, a, b, c, i, j, mask, last, sol; | ^ main.cpp: In function 'int getnr()': main.cpp:67:18: warning: 'ch' is used uninitialized in this function [-Wuninitialized] 67 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:67:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 67 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:65:8: note: 'ch' was declared here 65 | char ch; | ^~ main.cpp:67:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 67 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:65:8: note: 'ch' was declared here 65 | char ch; | ^~ main.cpp:67:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 67 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:65:8: note: 'ch' was declared here 65 | char ch; | ^~ main.cpp:67:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 67 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:65:8: note: 'ch' was declared here 65 | char ch; | ^~