Eroare de compilare: user.cpp: In function ‘void add(std::vector<int>&, std::vector<int>)’: user.cpp:16:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(t=i=0; i<max(b.size(),a.size()) || t; ++i) { ^ user.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==a.size()) a.push_back(0); ^ user.cpp:18:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] a[i]+=(i<b.size()?b[i]:0)+t; ^ user.cpp: In function ‘std::vector<int> mul(std::vector<int>, int)’: user.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a.size() || t; ++i) { ^ user.cpp:30:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int cif=(i<a.size()?a[i]:0)*x+t; ^ user.cpp: In function ‘int main()’: user.cpp:64:21: error: expected ‘;’ before ‘)’ token for(int i=0; i<2) for(int j=0; j<=n; ++j) for(int k=0; k<=n; ++k) for(int act=0; act<3; ++act) nr[i][j][k][act].reserve(40); ^