Compilare: main.cpp: In function 'int main()': main.cpp:32:30: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'ull* {aka long long unsigned int*}' [-Wformat=] scanf("%d %d", &a, &b); ^ main.cpp:32:30: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'ull* {aka long long unsigned int*}' [-Wformat=] main.cpp:26:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(inFile, "r", stdin); ^ main.cpp:27:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(outFile, "w", stdout); ^ main.cpp:29:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ main.cpp:32:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^