Compilare: main.cpp: In function 'int main()': main.cpp:30:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) { ~~^~~~ main.cpp:24:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hacker3.in", "r", stdin); ^ main.cpp:25:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hacker3.out", "w", stdout); ^ main.cpp:29:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%u", &n); ^ main.cpp:31:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%llu %llu", &a[i], &b[i]); ^ main.cpp: In function 'void init_pows()': main.cpp:19:17: warning: iteration 10 invokes undefined behavior [-Waggressive-loop-optimizations] pow2[i] = 1 << i; ~~~~~~~~^~~~~~~~ main.cpp:18:24: note: within this loop for (uint i = 0; i < 31; i++) { ~~^~~~ main.cpp: In function 'int main()': main.cpp:51:20: warning: iteration 10 invokes undefined behavior [-Waggressive-loop-optimizations] if (dp[n][i]) sol = min(sol, dp[n][i]); ~~~~~~~^ main.cpp:50:24: note: within this loop for (uint i = 0; i <= pmax; i++) { ~~^~~~~~~