Compilare: main.cpp: In function 'int main()': main.cpp:156:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 0 ; i< n ; i++) ^~~ main.cpp:195:12: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' out<<maxpair.first+1<<" "<<maxpair.second+1<<'\n'; ^~~ main.cpp:154:14: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] char val; ^~~