Compilare: user.cpp: In function ‘void citire()’: user.cpp:15:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &n); ^ user.cpp:38:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &mat[m + 1][i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:125:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma4.in", "r", stdin); ^ user.cpp:126:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma4.out", "w", stdout); ^ user.cpp: In function ‘void solve()’: user.cpp:86:33: warning: ‘yy’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol.push_back(mat[m][xx][yy]); ^ user.cpp:86:33: warning: ‘xx’ may be used uninitialized in this function [-Wmaybe-uninitialized]