Compilare: main.cpp: In function 'long long int brute_force(Punct*, int)': main.cpp:41:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dmin>dist(P[i],P[j])) ~~~~^~~~~~~~~~~~~~~~ main.cpp:39:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0;i<n;i++) ^~~ main.cpp:43:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return dmin; ^~~~~~ main.cpp: In function 'long long int closest(Punct*, int)': main.cpp:68:29: warning: unused variable 'ans' [-Wunused-variable] long long d=min(dl,dr),ans=d; ^~~