Compilare: user.cpp: In function ‘int main()’: user.cpp:54:18: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(dp[1-i&1][rmq[l][lg[r-l+1]]]<dp[1-i&1][rmq[r-(1<<(lg[r-l+1]))+1][lg[r-l+1]]]){ ^ user.cpp:54:47: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(dp[1-i&1][rmq[l][lg[r-l+1]]]<dp[1-i&1][rmq[r-(1<<(lg[r-l+1]))+1][lg[r-l+1]]]){ ^ user.cpp:55:22: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] min=dp[1-i&1][rmq[l][lg[r-l+1]]]; ^ user.cpp:59:22: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] min=dp[1-i&1][rmq[r-(1<<(lg[r-l+1]))+1][lg[r-l+1]]]; ^ user.cpp:15:14: warning: unused variable ‘x’ [-Wunused-variable] int i,n,j,x,poz,l,r,k,log; ^ user.cpp:15:24: warning: unused variable ‘k’ [-Wunused-variable] int i,n,j,x,poz,l,r,k,log; ^ user.cpp:19:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&n); ^ user.cpp:21:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&lim[i]); ^ user.cpp:23:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&del[i]); ^