Compilare: main.cpp: In function 'int main()': main.cpp:23:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=n+1;i++) ~^~~~~ main.cpp:25:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:27:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~ main.cpp:46:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=n+1;i++) ~^~~~~ main.cpp:48:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==n+1) ~^~~~~ main.cpp:49:13: warning: unused variable 'm' [-Wunused-variable] int m=1; ^ main.cpp:48:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(i==n+1) ^~ main.cpp:50:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(viz[i]!=1) ^~ main.cpp:55:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=n+1;i++) ~^~~~~ main.cpp:57:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==n-3){ ~^~~~~ main.cpp:58:13: warning: unused variable 'mata' [-Wunused-variable] int mata=1; ^~~~ main.cpp:66:13: warning: unused variable 'qq' [-Wunused-variable] int qq=early[curent].front(); ^~ main.cpp:61:9: warning: unused variable 'verf' [-Wunused-variable] int verf=q.back(); ^~~~ main.cpp:72:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=n+1;i++) ~^~~~~ main.cpp:83:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~