Compilare: user.cpp: In function ‘int main()’: user.cpp:69:38: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] while(e >= b && dp[1 - m & 1][tr(deq[e], n)] <= dp[1 - m & 1][p]) ^ user.cpp:69:70: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] while(e >= b && dp[1 - m & 1][tr(deq[e], n)] <= dp[1 - m & 1][p]) ^ user.cpp:76:42: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] dp[m & 1][pos] = dp[1 - m & 1][tr(deq[b], n)]; ^ user.cpp: In function ‘char nextch()’: user.cpp:14:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAXBUF, fi); ^