Borderou de evaluare (job #787875)

Compilare: main.cpp: In function 'int solve(std::string&)': main.cpp:7:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 7 | for(int i = 0; i <= n.length()-4; i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:25:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 25 | freopen("cifre.in", "r", stdin); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 26 | freopen("cifre.out", "w", stdout); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~