Compilare: user.cpp: In constructor ‘treap::treap(char)’: user.cpp:10:10: warning: ‘treap::key’ will be initialized after [-Wreorder] char key; ^ user.cpp:9:18: warning: ‘int treap::pr’ [-Wreorder] int h,cnt,id,pr; ^ user.cpp:22:5: warning: when initialized here [-Wreorder] treap(char key) : key(key),pr(rand()+1) {l = r = 0;h = 0;upd();} ^ user.cpp: In function ‘int main()’: user.cpp:89:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("diez.in","r",stdin); ^ user.cpp:90:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("diez.out","w",stdout); ^ user.cpp:91:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n%s\n",&n,&m,str+1); ^ user.cpp:96:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&op); ^ user.cpp:101:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %d %c\n",&p,&u); ^ user.cpp:107:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %d %d %d\n",&p,&u,&lg); ^