Compilare: main.cpp: In function 'bool sem(coord, coord)': main.cpp:12:1: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(a.x==b.x) ^~ main.cpp:14:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' return (a.x<b.x); ^~~~~~ main.cpp: In function 'int main()': main.cpp:19:13: warning: unused variable 'x' [-Wunused-variable] int n,m,x,y,maxx,maxy,best=0,xcur,ycur,sol; ^ main.cpp:19:15: warning: unused variable 'y' [-Wunused-variable] int n,m,x,y,maxx,maxy,best=0,xcur,ycur,sol; ^