Compilare: user.cpp: In function ‘int main()’: user.cpp:25:93: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((v[i].l < v[j].l && v[i].w < v[j].w) || (v[i].l < v[j].w && v[i].w < v[i].l) && lis[i] < lis[j]+1) ^ user.cpp:13:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plicuri.in", "r", stdin); ^ user.cpp:14:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plicuri.out", "w", stdout); ^ user.cpp:16:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:18:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &v[i].l, &v[i].w); ^