Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:41:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:53:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:61:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(i=0;i<adj[curr].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:89:13: warning: unused variable 'j' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^ main.cpp:89:17: warning: unused variable 'l' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^ main.cpp:89:19: warning: unused variable 'op' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^~ main.cpp:89:22: warning: unused variable 't' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^ main.cpp:89:24: warning: unused variable 'm' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^ main.cpp:89:26: warning: unused variable 'val' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^~~ main.cpp:89:30: warning: unused variable 'lin' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^~~ main.cpp:89:34: warning: unused variable 'col' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^~~ main.cpp:89:38: warning: unused variable 'z' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^ main.cpp:89:40: warning: unused variable 'poz1' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^~~~ main.cpp:89:45: warning: unused variable 'poz2' [-Wunused-variable] 89 | int n,i,j,k,l,op,t,m,val,lin,col,z,poz1,poz2,x,a,b; | ^~~~