Compilare: main.cpp: In function 'int main()': main.cpp:13:28: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=] scanf("%d %d\n", &n, &k); ^ main.cpp:13:28: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long int*' [-Wformat=] main.cpp:11:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("alibaba.in", "r", stdin); ^ main.cpp:12:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("alibaba.out", "w", stdout); ^ main.cpp:13:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &k); ^ main.cpp:16:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &c[j]); ^