Eroare de compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:17:5: error: ‘co’ was not declared in this scope co[a][b]=1; ^ user.cpp: In function ‘int main()’: user.cpp:35:31: warning: narrowing conversion of ‘c’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] v.push_back({c,b,d,-1}); ^ user.cpp:35:31: warning: narrowing conversion of ‘b’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:35:31: warning: narrowing conversion of ‘d’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:36:30: warning: narrowing conversion of ‘a’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] v.push_back({a,b,d,1}); ^ user.cpp:36:30: warning: narrowing conversion of ‘b’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:36:30: warning: narrowing conversion of ‘d’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size()&&v[i].x<=n;i++) ^ user.cpp:44:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i+1;j<v.size()&&v[i].x==v[j].x;j++) ^ user.cpp:54:13: error: ‘co’ was not declared in this scope co[ma][j]=(mars[j]!=0); ^ user.cpp:62:16: error: ‘co’ was not declared in this scope if(co[i][j]==0) ^ user.cpp:28:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k,r,ok,nr=0,start,a,b,c,d; ^ user.cpp:28:15: warning: unused variable ‘r’ [-Wunused-variable] int i,j,k,r,ok,nr=0,start,a,b,c,d; ^ user.cpp:28:17: warning: unused variable ‘ok’ [-Wunused-variable] int i,j,k,r,ok,nr=0,start,a,b,c,d; ^ user.cpp:28:25: warning: unused variable ‘start’ [-Wunused-variable] int i,j,k,r,ok,nr=0,start,a,b,c,d; ^