Compilare: main.cpp: In function 'void djikstra(int, int, int)': main.cpp:30:53: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 30 | cnn = cnn | (1 << x - 1); | ~~^~~ main.cpp:35:69: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 35 | if(i > 0 && !(cnn & (1 << i - 1))) | ~~^~~ main.cpp:36:68: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 36 | nrn = nrn | (1 << i-1); | ~^~ main.cpp:38:71: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] 38 | if(i < n-1 && !(cnn & (1 << i + 1))) | ~~^~~ main.cpp:39:68: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] 39 | nrn = nrn | (1 << i+1); | ~^~ main.cpp:24:21: warning: unused variable 'c' [-Wunused-variable] 24 | int c = -pq.top().first, node = pq.top().second; | ^