Compilare: user.cpp: In function ‘int main()’: user.cpp:24:75: warning: iteration 28u invokes undefined behavior [-Waggressive-loop-optimizations] dp[act][j] = min(dp[act][j] , dp[prev][j-1] + a*(1ll<<(j-1)) ); ^ user.cpp:23:9: note: containing loop for(int j=1;j<=30;++j) ^ user.cpp:22:35: warning: iteration 29u invokes undefined behavior [-Waggressive-loop-optimizations] dp[act][j] = dp[prev][j] + b *(1ll<<j); ^ user.cpp:21:9: note: containing loop for(int j=0;j<=30;++j) ^