Compilare: main.cpp: In function 'int main()': main.cpp:11:21: warning: format '%u' expects argument of type 'unsigned int*', but argument 2 has type 'ull* {aka long long unsigned int*}' [-Wformat=] scanf("%ull", &n); ^ main.cpp:12:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < n; ++i) { ~~^~~ main.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < n-2; ++i) { ~~^~~~~ main.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < n-3; ++i) { ~~^~~~~ main.cpp:28:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i+2; j < n; ++j) { ~~^~~ main.cpp:11:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%ull", &n); ^ main.cpp:14:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &temp); ^