Compilare: main.cpp: In function 'int main()': main.cpp:44:42: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::pair<int, int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",ans1.size()+ans2.size()); ^ main.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ans1.size();i++) printf("%d %d\n",ans1[i].first,ans1[i].second); ~^~~~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:16:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&st[i],&dr[i]); ^ main.cpp: In function 'int main()': main.cpp:39:37: 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:40:39: 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:41:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp: In function 'void solve(int)': main.cpp:19:9: warning: 'rad' may be used uninitialized in this function [-Wmaybe-uninitialized] int rad; ^~~