Compilare: main.cpp: In function 'void djikstra(int, int, int)': main.cpp:31:60: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 31 | nrn = nrn | (1 << i-1); | ~^~ main.cpp:34:60: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] 34 | nrn = nrn | (1 << i+1); | ~^~ main.cpp:41:53: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 41 | cnn = cnn ^ (1 << x - 1); | ~~^~~ main.cpp:24:21: warning: unused variable 'c' [-Wunused-variable] 24 | int c = -pq.top().first, node = pq.top().second; | ^