Compilare: main.cpp: In function 'int solve(int, int)': main.cpp:31:9: warning: unused variable 'Last' [-Wunused-variable] int Last = i; ^~~~ main.cpp: In function 'int main()': main.cpp:56:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("stiva.in", "r", stdin); ^ main.cpp:57:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("stiva.out", "w", stdout); ^ main.cpp:59:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s + 1); ^