Compilare: user.cpp: In function ‘void rmq()’: user.cpp:35:30: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for(int i = 1;i <= n - 1<<p;i ++) ^ user.cpp:37:34: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for(int j = 1;j <= m - 1<<p;j ++) ^ user.cpp: In function ‘int main()’: user.cpp:49:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d %d",&n,&m,&k,&q); ^ user.cpp:52:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&dp[i][j][0]); ^ user.cpp:58:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&x); ^