Compilare: main.cpp: In function 'int main()': main.cpp:21:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<c.size();++i){ ~^~~~~~~~~ main.cpp:23:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else s[i]-=((i+1)==c.size()); ~~~~~^~~~~~~~~~ main.cpp:25:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size();++i){ ~^~~~~~~~~ main.cpp:29:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<b.size();++i){ ~^~~~~~~~~ main.cpp:33:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<c.size()+1;++i){ ~^~~~~~~~~~~ main.cpp:41:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<c.size()&&c[i]=='*'){ ~^~~~~~~~~ main.cpp:42:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int val=min(cr, 9-((i+1)==c.size())); ~~~~~^~~~~~~~~~ main.cpp:44:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] c[i]='0'+val+(int)((i+1)==c.size()); ~~~~~^~~~~~~~~~ main.cpp:46:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<a.size()&&a[i]=='*'){ ~^~~~~~~~~ main.cpp:47:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int val=min(cr, 9-((i+1)==a.size())); ~~~~~^~~~~~~~~~ main.cpp:51:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<b.size()&&b[i]=='*'){ ~^~~~~~~~~ main.cpp:52:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int val=min(cr, 9-((i+1)==b.size())); ~~~~~^~~~~~~~~~