Compilare: user.cpp:1:0: warning: ignoring #pragma comment [-Wunknown-pragmas] #pragma comment(linker, "/stack:20000000") ^ user.cpp: In function ‘int main()’: user.cpp:17:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0;i < a.size(); ++i) ^ user.cpp:20:91: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(s.size() && s.back() < a[i] - '0' && tocut && s.size() + a.size() - i > M) ^ user.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(s.size() != M)s.pop_back(); ^ user.cpp:25:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<s.size();++i) ^