Compilare: main.cpp: In function 'bool can_walk(int)': main.cpp:46:30: warning: narrowing conversion of 'cx' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] que.push({cx, cy}); ^ main.cpp:46:30: warning: narrowing conversion of 'cy' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] main.cpp: In function 'int main()': main.cpp:64:36: warning: narrowing conversion of 'j' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] que.push({j, i}); ^ main.cpp:64:36: warning: narrowing conversion of 'i' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] main.cpp:67:35: warning: narrowing conversion of 'j' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] barbar = {j, i}; ^ main.cpp:67:35: warning: narrowing conversion of 'i' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] main.cpp:70:35: warning: narrowing conversion of 'j' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] iesire = {j, i}; ^ main.cpp:70:35: warning: narrowing conversion of 'i' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] main.cpp:105:30: warning: narrowing conversion of 'cx' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] que.push({cx, cy}); ^ main.cpp:105:30: warning: narrowing conversion of 'cy' from 'int' to 'short unsigned int' inside { } [-Wnarrowing] main.cpp:135:5: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] if (ans == 0) ans = -1; ^~