Borderou de evaluare (job #692329)

Compilare: main.cpp: In function 'void precalchash()': main.cpp:37:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 37 | for (int i = 1; i < s.size(); ++i) | ~~^~~~~~~~~~ main.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 39 | for (int i = 0; i < s.size(); ++i, p = 1ll * p * 31 % MOD) | ~~^~~~~~~~~~ main.cpp: In function 'bool ok(int)': main.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 50 | for (int i = 0; i < s.size() - x + 1; ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 58 | for (int i = 0; i < s.size() - x + 1; ++i) | ~~^~~~~~~~~~~~~~~~~~