Compilare: user.cpp: In function ‘int main()’: user.cpp:108:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("mostenire.in", "r", stdin); ^ user.cpp:109:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("mostenire.out", "w", stdout); ^ user.cpp: In function ‘void Next()’: user.cpp:135:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (sir, 1, maxl, stdin), pos = 0; ^ user.cpp: In function ‘void proces(long long int, long long int)’: user.cpp:38:62: warning: ‘ras’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (a[i].v <= mij) cost += mij - a[i].v, a[i].v = mij; ^