#include<bits/stdc++.h> using namespace std; #define ll long long struct SegmentTreeNode { ll sum = 0; void assignLeaf(ll value) { sum = value; } void merge(SegmentTreeNode& left, SegmentTreeNode& right) { sum = left.sum + right.sum; } ll getValue() { return sum; } }; class SegmentTree { SegmentTreeNode* nodes; int N; vector<ll> lazy; public: SegmentTree(ll arr[], int N) { this->N = N; nodes = new SegmentTreeNode[4*N+1]; lazy.resize(4*N+1,0); buildTree(arr, 1, 0, N-1); } ~SegmentTree() { delete[] nodes; } ll getValue(int lo, int hi) { SegmentTreeNode result = getValue(1, 0, N-1, lo, hi); return result.getValue(); } void update(int index, ll value) { update(1, 0, N-1, index, value); } void buildTree(ll arr[], int stIndex, int lo, int hi) { if (lo == hi) { nodes[stIndex].assignLeaf(arr[lo]); return; } int left = 2 * stIndex, right = left + 1, mid = (lo + hi) / 2; buildTree(arr, left, lo, mid); buildTree(arr, right, mid + 1, hi); nodes[stIndex].merge(nodes[left], nodes[right]); } SegmentTreeNode getValue(int stIndex, int left, int right, int lo, int hi) { if (left == lo && right == hi) return nodes[stIndex]; int mid = (left + right) / 2; if (lo > mid) return getValue(2*stIndex+1, mid+1, right, lo, hi); if (hi <= mid) return getValue(2*stIndex, left, mid, lo, hi); SegmentTreeNode leftResult = getValue(2*stIndex, left, mid, lo, mid); SegmentTreeNode rightResult = getValue(2*stIndex+1, mid+1, right, mid+1, hi); SegmentTreeNode result; result.merge(leftResult, rightResult); return result; } int getSegmentTreeSize(int N) { int size = 1; for (; size < N; size <<= 1); return size << 1; } void update(int stIndex, int lo, int hi, int index, ll value) { if (lo == hi) { nodes[stIndex].assignLeaf(value); return; } int left = 2 * stIndex, right = left + 1, mid = (lo + hi) / 2; if (index <= mid) update(left, lo, mid, index, value); else update(right, mid+1, hi, index, value); nodes[stIndex].merge(nodes[left], nodes[right]); } void lazy_update(int a, int b, int start, int end, int index, ll val) { if(lazy[index] != 0) { nodes[index].sum += (end-start+1)*lazy[index]; if(start != end) { lazy[2*index] += lazy[index]; lazy[2*index+1] += lazy[index]; } lazy[index] = 0; } if(b < start || a > end) return; if(a <= start && b >= end) { nodes[index].sum += (end-start+1)*val; if(start != end) { lazy[2*index] += val; lazy[2*index+1] += val; } return; } else { int mid = (start+end)/2; lazy_update(a,b,start,mid,2*index,val); lazy_update(a,b,mid+1,end,2*index+1,val); nodes[index].sum = nodes[2*index].sum + nodes[2*index+1].sum; } } ll lazy_query(int a, int b, int start,int end, int index) { if(b < start || a > end) return 0; if(lazy[index] != 0) { nodes[index].sum += (end-start+1)*lazy[index]; if(start != end) { lazy[2*index] += lazy[index]; lazy[2*index+1] += lazy[index]; } lazy[index] = 0; } if(a <= start && b >= end) { return nodes[index].sum; } else { int mid = (start+end)/2; ll l = lazy_query(a,b,start,mid,2*index); ll r = lazy_query(a,b,mid+1,end,2*index+1); return l+r; } } }; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); int t; cin>>t; while(t--) { int n,c; cin>>n>>c; ll arr[n]; for(int i=0; i<n; ++i) arr[i] = 0; SegmentTree st(arr,n); while(c--) { int x; cin>>x; if(x == 0) { int a,b; ll value; cin>>a>>b>>value; st.lazy_update(a-1,b-1,0,n-1,1,value); } else { int a,b; cin>>a>>b; cout << st.lazy_query(a-1,b-1,0,n-1,1) <<"\n"; } } } return 0; }
Standard input is empty
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