Compilare: user.cpp: In function ‘int dynamic()’: user.cpp:121:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (V.size() <= k) ^ user.cpp: In function ‘int main()’: user.cpp:132:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("submatrix.out","w",stdout); ^ user.cpp: In function ‘void read()’: user.cpp:101:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("submatrix.in","r",stdin); ^ user.cpp:102:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&k); ^ user.cpp:105:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^