Compilare: main.cpp: In function 'int main()': main.cpp:25:18: warning: array subscript has type 'char' [-Wchar-subscripts] freq[s[i]]++; ^ main.cpp:26:27: warning: array subscript has type 'char' [-Wchar-subscripts] rel[i] = freq[s[i]]; ^ main.cpp:33:30: warning: array subscript has type 'char' [-Wchar-subscripts] long long f = freq[ch], F = freq[CH], cnt = rel[n % k]; ^ main.cpp:33:44: warning: array subscript has type 'char' [-Wchar-subscripts] long long f = freq[ch], F = freq[CH], cnt = rel[n % k]; ^ main.cpp:17:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("caps.in", "r", stdin); ^ main.cpp:18:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("caps.out", "w", stdout); ^ main.cpp:22:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d ", &k, &q); ^ main.cpp:23:26: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(s, 1, k, stdin); ^ main.cpp:29:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%llu", &n); ^