Compilare: main.cpp: In constructor 'implicit_treap::Node::Node(int)': main.cpp:9:14: warning: 'implicit_treap::Node::m' will be initialized after [-Wreorder] int pr, v, m; ^ main.cpp:9:7: warning: 'int implicit_treap::Node::pr' [-Wreorder] int pr, v, m; ^~ main.cpp:13:3: warning: when initialized here [-Wreorder] Node(int v): v(v), m(v), pr(dis(rng)), c(1) {rev=p=l=r=0;} ^~~~ main.cpp:13:53: warning: suggest parentheses around assignment used as truth value [-Wparentheses] Node(int v): v(v), m(v), pr(dis(rng)), c(1) {rev=p=l=r=0;} ~^~~~~~ main.cpp: In function 'int main()': main.cpp:92:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("permsort2.in", "r", stdin); ^ main.cpp:93:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("permsort2.out", "w", stdout); ^ main.cpp:95:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:99:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^