Compilare: user.cpp: In function ‘int main()’: user.cpp:98:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1 ; i < diam.size() ; ++i) { ^ user.cpp:106:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < v[i].size() ; ++j) { ^ user.cpp: In function ‘void caut_bin(int, int)’: user.cpp:169:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1 ; i < diam.size() ; i <<= 1); ^ user.cpp:171:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i + p < diam.size() && sum[p + i] - sum[pos] < val) { ^ user.cpp: In function ‘void dinamicuta(int)’: user.cpp:192:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v[node].size() ; ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:56:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hacker2.in" , "r" , stdin); ^ user.cpp:57:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hacker2.out" , "w" , stdout); ^