Compilare: main.cpp: In function 'int solve(int*, int*, int, int)': main.cpp:27:13: warning: no return statement in function returning non-void [-Wreturn-type] nod=r[nod];}} ^ main.cpp: In function 'int main()': main.cpp:39:38: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",sol0.size()+sol1.size()); ^ main.cpp:29:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rotatii2.in","r",stdin); ^ main.cpp:30:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rotatii2.out","w",stdout); ^ main.cpp:32:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:34:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&l[i],&r[i]); ^ main.cpp:36:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&l2[i],&r2[i]); ^ main.cpp: In function 'int solve(int*, int*, int, int)': main.cpp:16:4: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] nod=root; ~~~^~~~~