Compilare: main.cpp: In function 'long long int Solve(unsigned int)': main.cpp:106:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p2 <= n && dif <= x) { ~~~~^~~~ main.cpp: In function 'int main()': main.cpp:123:34: 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:124:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.out", "w", stdout); ^ main.cpp:125:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &l, &u); ^ main.cpp:128:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^