Compilare: main.cpp: In function 'int main()': main.cpp:28:16: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (i-j<=powerup1[j]) ^ main.cpp:40:58: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] if (dp[i]==dp[j]+1 && cost[i]>cost[j]+(i-j+1)>>1) ~~~~~~~^~~~~~~~ main.cpp:41:40: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] cost[i]=cost[j]+(i-j+1)>>1; ~~~~~~~^~~~~~~~ main.cpp:35:16: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (i-j<=powerup2[j]<<1) ^ main.cpp:8:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("scara3.in", "r", stdin); ^ main.cpp:9:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("scara3.out", "w", stdout); ^ main.cpp:13:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ main.cpp:14:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for (scanf ("%d", &i); i; i--) { ^ main.cpp:15:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &a, &b); ^ main.cpp:18:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for (scanf ("%d", &i); i; i--) { ^ main.cpp:19:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &a, &b); ^