Compilare: main.cpp: In function 'bool initialize()': main.cpp:35:16: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if (s1 & 1 == 0 && s2 & 1 == 0 && s3 & 1 == 0) ~~^~~~ main.cpp:35:31: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if (s1 & 1 == 0 && s2 & 1 == 0 && s3 & 1 == 0) ~~^~~~ main.cpp:35:46: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if (s1 & 1 == 0 && s2 & 1 == 0 && s3 & 1 == 0) ~~^~~~ main.cpp: In function 'int dijkstra()': main.cpp:75:1: warning: control reaches end of non-void function [-Wreturn-type] } ^