Compilare: main.cpp:8:16: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] unll v[1 << 20 + 5]; ~~~^~~ main.cpp: In function 'void Read()': main.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i <= n;++i) ~~^~~~ main.cpp: In function 'void Solve()': main.cpp:53:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1;i <= n;++i) ~~^~~~ main.cpp: In function 'void read(unll&)': main.cpp:21:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, 100000, stdin); ^ main.cpp:34:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, 100000, stdin); ^ main.cpp: In function 'void Read()': main.cpp:41:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.in", "r", stdin); ^ main.cpp:42:36: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, 100000, stdin); ^