Compilare: user.cpp: In function ‘void Cliques3(const std::vector<int>&)’: user.cpp:27:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i + 2 < v.size(); ++i) ^ user.cpp:28:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j + 1 < v.size(); ++j) ^ user.cpp:29:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = j + 1; k < v.size(); ++k) ^ user.cpp: In function ‘void Cliques4(const std::vector<int>&)’: user.cpp:34:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i + 3 < v.size(); ++i) ^ user.cpp:35:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j + 2 < v.size(); ++j) ^ user.cpp:36:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = j + 1; k + 1 < v.size(); ++k) ^ user.cpp:37:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l = k + 1; l < v.size(); ++l) ^ user.cpp: In function ‘void solve()’: user.cpp:51:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[Nod].size(); ++i) ^ user.cpp:56:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[Nod].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:67:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("count.in", "r", stdin); ^ user.cpp:68:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("count.out", "w", stdout); ^ user.cpp:69:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:72:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^