Compilare: user.cpp: In function ‘void RMQ()’: user.cpp:97:21: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for ( int i = 1; i+ 1<<(j-1) <= N; i++ ) ^ user.cpp:98:34: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] if(niv[c[i][j-1]] < niv[c[i+1<<(j-1)][j-1]]) c[i][j]=c[i][j-1]; ^ user.cpp:99:64: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] else c[i][j]= c[i+1<<(j-1)][j-1]; ^