Compilare: main.cpp: In function 'int main()': main.cpp:128:21: warning: 'jfn' may be used uninitialized [-Wmaybe-uninitialized] 128 | if (viz[ifn][jfn]==0) ans = -1; | ~~~~~~~~~~~~^ main.cpp:73:13: note: 'jfn' was declared here 73 | int ifn,jfn; | ^~~ main.cpp:128:21: warning: 'ifn' may be used uninitialized [-Wmaybe-uninitialized] 128 | if (viz[ifn][jfn]==0) ans = -1; | ~~~~~~~~~~~~^ main.cpp:73:9: note: 'ifn' was declared here 73 | int ifn,jfn; | ^~~ main.cpp:113:9: warning: 'ist' may be used uninitialized [-Wmaybe-uninitialized] 113 | int ans = Lee[ist][jst]; | ^~~ main.cpp:72:9: note: 'ist' was declared here 72 | int ist,jst; | ^~~ main.cpp:113:9: warning: 'jst' may be used uninitialized [-Wmaybe-uninitialized] 113 | int ans = Lee[ist][jst]; | ^~~ main.cpp:72:13: note: 'jst' was declared here 72 | int ist,jst; | ^~~