Compilare: main.cpp: In function 'int main()': main.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size() ; i++) ~~^~~~~~~~~~ main.cpp:32:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size() ; i++) ~~^~~~~~~~~~ main.cpp:37:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < p.size() ; i++){ ~~^~~~~~~~~~ main.cpp:14:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("picazo.in","r",stdin); ^ main.cpp:15:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("picazo.out","w",stdout); ^ main.cpp:16:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&k,&q); ^ main.cpp:20:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^