Compilare: main.cpp: In function 'int check(int)': main.cpp:15:12: warning: unused variable 'j' [-Wunused-variable] int i, j, t = 1, p = 0, val = 0; ^ main.cpp: In function 'void read_and_solve()': main.cpp:32:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &N), NR = 0; ^ main.cpp:36:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] assert(A[i] >= 0 && A[i] <= 10000); ^ main.cpp: In function 'int main()': main.cpp:53:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("auto.in", "rt", stdin); ^ main.cpp:54:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("auto.out", "wt", stdout); ^ main.cpp:58:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &teste); ^