Compilare: main.cpp: In function 'int main()': main.cpp:33:42: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses] if (i != X and i != Y and cnt[X][i] > 0 != cnt[Y][i]) { ~~~~~~~~~~^~~ main.cpp:16:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("prietene.in", "r", stdin); ^ main.cpp:17:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("prietene.out", "w", stdout); ^