Compilare: main.cpp: In member function 'Huge Huge::operator+(const Huge&) const': main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < result.v.size() - 1; i++) { ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:21:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < v.size()) ~~^~~~~~~~~~ main.cpp:23:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < a.v.size()) ~~^~~~~~~~~~~~ main.cpp: In member function 'Huge Huge::operator-(const Huge&) const': main.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < result.v.size() - 1; i++) { ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:42:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < v.size()) ~~^~~~~~~~~~ main.cpp:44:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < a.v.size()) ~~^~~~~~~~~~~~ main.cpp: In member function 'Huge Huge::operator*(const Huge&) const': main.cpp:59:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:60:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < a.v.size(); j++) ~~^~~~~~~~~~~~ main.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < result.v.size() - 1; i++) { ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:100:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("gard2.in", "r", stdin); ^ main.cpp:101:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("gard2.out", "w", stdout); ^ main.cpp:102:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &n, &k); ^