#include #include #include #include #include #include using namespace std; void chmin(int &x,int y){x=min(x,y);} #include #include template class segment_tree { using size_type = typename std::vector::size_type; class unique_queue { size_type *que, *begin, *end; bool *in; public: unique_queue() : que(), begin(), end(), in() {} unique_queue(size_type n) : que(new size_type[n]), begin(que), end(que), in(new bool[n]{}) {} ~unique_queue() { delete[] que; delete[] in; } void clear() { begin = end = que; } bool empty() const { return begin == end; } bool push(size_type index) { if(in[index]) return false; return in[*end++ = index] = true; } size_type pop() { return in[*begin] = false, *begin++; } }; // struct unique_queue size_type size_orig, height, size_ext; std::vector data; unique_queue que; void recalc(const size_type node) { data[node] = data[node << 1] + data[node << 1 | 1]; } void rebuild() { while(!que.empty()) { const size_type index = que.pop() >> 1; if(index && que.push(index)) recalc(index); } que.clear(); } template size_type left_search_subtree(size_type index, const pred_type pred, monoid mono) const { assert(index); while(index < size_ext) { const monoid tmp = data[(index <<= 1) | 1] + mono; if(pred(tmp)) mono = tmp; else ++index; } return ++index -= size_ext; } template size_type right_search_subtree(size_type index, const pred_type pred, monoid mono) const { assert(index); while(index < size_ext) { const monoid tmp = mono + data[index <<= 1]; if(pred(tmp)) ++index, mono = tmp; } return (index -= size_ext) < size_orig ? index : size_orig; } public: segment_tree(const size_type n = 0) : size_orig{n}, height(n > 1 ? 32 - __builtin_clz(n - 1) : 0), size_ext{1u << height}, data(size_ext << 1), que(size_ext << 1) {} segment_tree(const size_type n, const monoid &init) : segment_tree(n) { std::fill(std::next(std::begin(data), size_ext), std::end(data), init); for(size_type i{size_ext}; --i; ) recalc(i); } template ::value_type> segment_tree(iter_type first, iter_type last) : size_orig(std::distance(first, last)), height(size_orig > 1 ? 32 - __builtin_clz(size_orig - 1) : 0), size_ext{1u << height}, data(size_ext << 1), que(size_ext << 1) { static_assert(std::is_constructible::value, "monoid(iter_type::value_type) is not constructible."); for(auto iter{std::next(std::begin(data), size_ext)}; iter != std::end(data) && first != last; ++iter, ++first) *iter = monoid{*first}; for(size_type i{size_ext}; --i; ) recalc(i); } template segment_tree(const container_type &cont) : segment_tree(std::begin(cont), std::end(cont)) {} size_type size() const { return size_orig; } size_type capacity() const { return size_ext; } // reference to the element at the index. typename decltype(data)::reference operator[](size_type index) { assert(index < size_orig); que.push(index |= size_ext); return data[index]; } // const reference to the element at the index. typename decltype(data)::const_reference operator[](size_type index) const { assert(index < size_orig); return data[index |= size_orig]; } monoid fold(size_type first, size_type last) { assert(last <= size_orig); rebuild(); monoid leftval{}, rightval{}; first += size_ext, last += size_ext; while(first < last) { if(first & 1) leftval = leftval + data[first++]; if(last & 1) rightval = data[--last] + rightval; first >>= 1, last >>= 1; } return leftval + rightval; } monoid fold() { return fold(0, size_orig); } template size_type left_search(size_type right, const pred_type pred) { assert(right <= size_orig); rebuild(); right += size_ext; monoid mono{}; for(size_type left{size_ext}; left != right; left >>= 1, right >>= 1) { if((left & 1) != (right & 1)) { const monoid tmp = data[--right] + mono; if(!pred(tmp)) return left_search_subtree(right, pred, mono); mono = tmp; } } return 0; } template size_type right_search(size_type left, const pred_type pred) { assert(left <= size_orig); rebuild(); left += size_ext; monoid mono{}; for(size_type right{size_ext << 1}; left != right; left >>= 1, right >>= 1) { if((left & 1) != (right & 1)) { const monoid tmp = mono + data[left]; if(!pred(tmp)) return right_search_subtree(left, pred, mono); mono = tmp; ++left; } } return size_orig; } }; // class segment_tree struct mono_type { int val=0; mono_type(int v=0) :val(v) {} // binary operation mono_type operator+(const mono_type& rhs) const { mono_type{*this} += rhs; } // operation assignment mono_type &operator+=(const mono_type &rhs) { val+=rhs.val; return *this; } }; main() { int n,Q; cin>>n>>Q; vector a(n),b(n); for(auto &e:a) cin>>e; segment_tree seg(n+1); while(Q--) { char c; int x,y; cin>>c>>x>>y; if(c=='A') { auto k=seg.fold(0,x); --x; b[x]+=k*a[x]; a[x]+=y; seg[x]-=k; seg[x+1]+=k; } else { --x; seg[x]++; seg[y]--; } } for(int i=0,k=0;i