Compilare: main.cpp: In function 'int main()': main.cpp:95:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bile3.in", "r", stdin); ^ main.cpp:96:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bile3.out", "w", stdout); ^ main.cpp: In function 'void solve(int, int, int)': main.cpp:82:17: warning: 'p1' may be used uninitialized in this function [-Wmaybe-uninitialized] mrk[p1] = 2; ~~~~~~~~^~~ main.cpp:88:17: warning: 'p2' may be used uninitialized in this function [-Wmaybe-uninitialized] mrk[p2] = 0; ~~~~~~~~^~~