Compilare: main.cpp: In function 'int main()': main.cpp:88:49: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf("%d\n", (1LL * n * (n + 1) / 2) % MOD); ^ main.cpp:80:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("puteri3.in", "r", stdin); ^ main.cpp:81:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("puteri3.out", "w", stdout); ^ main.cpp:85:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^