Compilare: main.cpp: In function 'void solve(int)': main.cpp:104:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < old.size() && !isNew; i++) ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:116:7: warning: variable 'startTime' set but not used [-Wunused-but-set-variable] auto startTime = chrono::high_resolution_clock::now(); ^~~~~~~~~ main.cpp:111:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("palatulvoltaic.in", "r", stdin); ^ main.cpp:113:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("palatulvoltaic.out", "w", stdout); ^