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  1.  
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. #define ll long long
  5.  
  6. struct SegmentTreeNode
  7. {
  8. ll sum = 0;
  9. void assignLeaf(ll value)
  10. {
  11. sum = value;
  12. }
  13.  
  14. void merge(SegmentTreeNode& left, SegmentTreeNode& right)
  15. {
  16. sum = left.sum + right.sum;
  17. }
  18.  
  19. ll getValue()
  20. {
  21. return sum;
  22. }
  23. };
  24.  
  25. class SegmentTree
  26. {
  27. SegmentTreeNode* nodes;
  28. int N;
  29. vector<ll> lazy;
  30. public:
  31.  
  32. SegmentTree(ll arr[], int N)
  33. {
  34. this->N = N;
  35. nodes = new SegmentTreeNode[4*N+1];
  36. lazy.resize(4*N+1,0);
  37. buildTree(arr, 1, 0, N-1);
  38. }
  39.  
  40. ~SegmentTree()
  41. {
  42. delete[] nodes;
  43. }
  44.  
  45. ll getValue(int lo, int hi)
  46. {
  47. SegmentTreeNode result = getValue(1, 0, N-1, lo, hi);
  48. return result.getValue();
  49. }
  50.  
  51. void update(int index, ll value)
  52. {
  53. update(1, 0, N-1, index, value);
  54. }
  55.  
  56.  
  57. void buildTree(ll arr[], int stIndex, int lo, int hi)
  58. {
  59. if (lo == hi)
  60. {
  61. nodes[stIndex].assignLeaf(arr[lo]);
  62. return;
  63. }
  64. int left = 2 * stIndex, right = left + 1, mid = (lo + hi) / 2;
  65. buildTree(arr, left, lo, mid);
  66. buildTree(arr, right, mid + 1, hi);
  67. nodes[stIndex].merge(nodes[left], nodes[right]);
  68. }
  69.  
  70. SegmentTreeNode getValue(int stIndex, int left, int right, int lo, int hi)
  71. {
  72. if (left == lo && right == hi)
  73. return nodes[stIndex];
  74.  
  75. int mid = (left + right) / 2;
  76. if (lo > mid)
  77. return getValue(2*stIndex+1, mid+1, right, lo, hi);
  78. if (hi <= mid)
  79. return getValue(2*stIndex, left, mid, lo, hi);
  80.  
  81. SegmentTreeNode leftResult = getValue(2*stIndex, left, mid, lo, mid);
  82. SegmentTreeNode rightResult = getValue(2*stIndex+1, mid+1, right, mid+1, hi);
  83. SegmentTreeNode result;
  84. result.merge(leftResult, rightResult);
  85. return result;
  86. }
  87.  
  88. int getSegmentTreeSize(int N)
  89. {
  90. int size = 1;
  91. for (; size < N; size <<= 1);
  92. return size << 1;
  93. }
  94.  
  95. void update(int stIndex, int lo, int hi, int index, ll value)
  96. {
  97. if (lo == hi)
  98. {
  99. nodes[stIndex].assignLeaf(value);
  100. return;
  101. }
  102.  
  103. int left = 2 * stIndex, right = left + 1, mid = (lo + hi) / 2;
  104. if (index <= mid)
  105. update(left, lo, mid, index, value);
  106. else
  107. update(right, mid+1, hi, index, value);
  108. nodes[stIndex].merge(nodes[left], nodes[right]);
  109. }
  110.  
  111. void lazy_update(int a, int b, int start, int end, int index, ll val)
  112. {
  113. if(lazy[index] != 0)
  114. {
  115. nodes[index].sum += (end-start+1)*lazy[index];
  116. if(start != end)
  117. {
  118. lazy[2*index] += lazy[index];
  119. lazy[2*index+1] += lazy[index];
  120. }
  121. lazy[index] = 0;
  122. }
  123. if(b < start || a > end) return;
  124.  
  125. if(a <= start && b >= end)
  126. {
  127. nodes[index].sum += (end-start+1)*val;
  128. if(start != end)
  129. {
  130. lazy[2*index] += val;
  131. lazy[2*index+1] += val;
  132. }
  133. return;
  134. }
  135.  
  136. else
  137. {
  138. int mid = (start+end)/2;
  139. lazy_update(a,b,start,mid,2*index,val);
  140. lazy_update(a,b,mid+1,end,2*index+1,val);
  141. nodes[index].sum = nodes[2*index].sum + nodes[2*index+1].sum;
  142. }
  143. }
  144.  
  145. ll lazy_query(int a, int b, int start,int end, int index)
  146. {
  147. if(b < start || a > end) return 0;
  148.  
  149. if(lazy[index] != 0)
  150. {
  151. nodes[index].sum += (end-start+1)*lazy[index];
  152. if(start != end)
  153. {
  154. lazy[2*index] += lazy[index];
  155. lazy[2*index+1] += lazy[index];
  156. }
  157. lazy[index] = 0;
  158. }
  159.  
  160. if(a <= start && b >= end)
  161. {
  162. return nodes[index].sum;
  163. }
  164.  
  165. else
  166. {
  167. int mid = (start+end)/2;
  168. ll l = lazy_query(a,b,start,mid,2*index);
  169. ll r = lazy_query(a,b,mid+1,end,2*index+1);
  170. return l+r;
  171. }
  172. }
  173. };
  174.  
  175. int main()
  176. {
  177. ios_base::sync_with_stdio(false);
  178. cin.tie(NULL);
  179. int t;
  180. cin>>t;
  181. while(t--)
  182. {
  183. int n,c;
  184. cin>>n>>c;
  185. ll arr[n];
  186. for(int i=0; i<n; ++i) arr[i] = 0;
  187. SegmentTree st(arr,n);
  188. while(c--)
  189. {
  190. int x;
  191. cin>>x;
  192. if(x == 0)
  193. {
  194. int a,b;
  195. ll value;
  196. cin>>a>>b>>value;
  197. st.lazy_update(a-1,b-1,0,n-1,1,value);
  198. }
  199. else
  200. {
  201. int a,b;
  202. cin>>a>>b;
  203. cout << st.lazy_query(a-1,b-1,0,n-1,1) <<"\n";
  204. }
  205. }
  206. }
  207. return 0;
  208. }
Runtime error #stdin #stdout 0s 16672KB
stdin
Standard input is empty
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