Compilare: main.cpp: In function 'int calculatelps(int, int)': main.cpp:25:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<s[id1].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:37:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<s[id2].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:46:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==s[id1].size()-1){ ~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void afis(int, int)': main.cpp:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<s[id].size();i++) ~^~~~~~~~~~~~~ main.cpp:61:47: warning: array subscript has type 'char' [-Wchar-subscripts] for(int i=s[id].size()-cost[prv[id][mask].id][id];i<s[id].size();i++) ^ main.cpp:61:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=s[id].size()-cost[prv[id][mask].id][id];i<s[id].size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:45: warning: narrowing conversion of 'i' from 'int' to 'char' inside { } [-Wnarrowing] prv[j][mask|included[j]]={i,mask}; ^ main.cpp:108:23: warning: 'idsol' may be used uninitialized in this function [-Wmaybe-uninitialized] afis(idsol,(1<<n)-1); ^