Compilare: user.cpp: In function ‘void solve(int)’: user.cpp:65:65: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (k > rap[nod].cate || k == rap[nod].cate && p.first < rap[nod].best) ^ user.cpp:74:53: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (k > rap[nod].cate || k == rap[nod].cate && key[nod] < rap[nod].best) ^ user.cpp: In function ‘void read()’: user.cpp:29:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:32:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^ user.cpp:37:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &key[i]); ^ user.cpp: In function ‘int main()’: user.cpp:84:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("egal.in", "r", stdin); ^ user.cpp:85:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("egal.out", "w", stdout); ^ user.cpp: In function ‘void solve(int)’: user.cpp:64:50: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] int k = (*rap[pos].m)[p.first] += p.second; ^