Compilare: user.cpp: In function ‘void DF(int, int, long long int)’: user.cpp:23:24: warning: NULL used in arithmetic [-Wpointer-arith] if( node[nod].left == NULL) ^ user.cpp: In function ‘void BuildTree()’: user.cpp:47:103: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(MergeEnd <= MergeBegin || node[SingleQueue[SingleBegin]].val <= node[MergeQueue[MergeBegin]].val && SingleBegin <= SingleEnd) ^ user.cpp:49:111: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] else if ( SingleEnd <= SingleBegin || node[SingleQueue[SingleBegin]].val > node[MergeQueue[MergeBegin]].val && MergeBegin <= MergeEnd) ^ user.cpp:52:103: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(MergeEnd <= MergeBegin || node[SingleQueue[SingleBegin]].val <= node[MergeQueue[MergeBegin]].val && SingleBegin <= SingleEnd) ^ user.cpp:54:111: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] else if ( SingleEnd <= SingleBegin || node[SingleQueue[SingleBegin]].val > node[MergeQueue[MergeBegin]].val && MergeBegin <= MergeEnd) ^ user.cpp: In function ‘int main()’: user.cpp:82:26: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%d",&node[i].val); ^ user.cpp:78:6: warning: unused variable ‘x’ [-Wunused-variable] int x; ^