Compilare: main.cpp: In function 'void solve()': main.cpp:6:40: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 6 | #define fr(n) for(ll i=0;i<n;++i) | ~^~~~~~~ 7 | #define ctz(x) __builtin_ctzll(x) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8 | #define clz(x) __builtin_clzll(x) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9 | #define pcount(x) __builtin_popcountll(x) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 10 | const int dx[] = {-1, 0, 1, 0}; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11 | const int dy[] = {0, 1, 0, -1}; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 12 | | 13 | | 14 | class InParser { | ~~~~~~~~~~~~~~~~ 15 | private: | ~~~~~~~~ 16 | FILE *fin; | ~~~~~~~~~~ 17 | char *buff; | ~~~~~~~~~~~ 18 | int sp; | ~~~~~~~ 19 | | 20 | char read_ch() { | ~~~~~~~~~~~~~~~~ 21 | ++sp; | ~~~~~ 22 | if (sp == 4096) { | ~~~~~~~~~~~~~~~~~ 23 | sp = 0; | ~~~~~~~ 24 | fread(buff, 1, 4096, fin); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ 25 | } | ~ 26 | return buff[sp]; | ~~~~~~~~~~~~~~~~ 27 | } | ~ 28 | | 29 | public: | ~~~~~~~