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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4. #define ull unsigned long long
  5. #define si(X) scanf("%d", &(X))
  6. #define sll(X) scanf("%lld",&(X))
  7. #define INFL 0x3f3f3f3f3f3f3f3fLL
  8. const ll mod = 1e9 + 7;
  9.  
  10. ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);}
  11. ll expo(ll base,ll pow){ll ans = 1;
  12. while(pow!=0){if(pow&1==1){ans = ans*base;ans = ans%mod;}
  13. base *= base;base%=mod;pow/=2;}return ans;}
  14. ll inv(ll x){return expo(x,mod-2);}
  15. int dx[8] = {1 , 0 , -1 , 0 , 1 , -1 , -1 , 1}; // last 4 diagonal
  16. int dy[8] = {0 , 1 , 0 , -1 , 1 , 1 , -1 , -1};
  17. /*---------------------------------------------------------------------------------------------------------------------*/
  18.  
  19. const int M = 1e5 + 5;
  20.  
  21. ll pref[M], alpha;
  22. set<pair<ll , ll> > se[M]; // distance, timer
  23. /*
  24. contains pairs of (max_distance, timer) of all leaf nodes attched to node i.
  25. */
  26.  
  27. int N;
  28. int timer = 0;
  29. int now_time[M];
  30. struct Node{
  31. ll dis;
  32. int node;
  33. };
  34. Node segTree[4*M];
  35.  
  36.  
  37. void merge(int ind){
  38. if(segTree[2*ind].dis > segTree[2*ind + 1].dis){
  39. segTree[ind].dis = segTree[2*ind].dis;
  40. segTree[ind].node = segTree[2*ind].node;
  41. }
  42. else if(segTree[2*ind].dis == segTree[2*ind + 1].dis){
  43. int u = segTree[2*ind].node;
  44. int v = segTree[2*ind + 1].node;
  45. ll u_tim = now_time[u];
  46. ll v_tim = now_time[v];
  47.  
  48.  
  49. if(u_tim > v_tim){
  50. segTree[ind].dis = segTree[2*ind].dis;
  51. segTree[ind].node = segTree[2*ind].node;
  52. }
  53. else{
  54. segTree[ind].dis = segTree[2*ind + 1].dis;
  55. segTree[ind].node = segTree[2*ind + 1].node;
  56. }
  57. }
  58. else{
  59. segTree[ind].dis = segTree[2*ind + 1].dis;
  60. segTree[ind].node = segTree[2*ind + 1].node;
  61. }
  62. }
  63.  
  64. void build(int ind , int l , int r){
  65. if(l > r) return;
  66. if(l == r){
  67. segTree[ind].dis = pref[l];
  68. segTree[ind].node = l;
  69. return;
  70. }
  71. int mid = (l + r)/2;
  72. build(2*ind , l , mid);
  73. build(2*ind + 1 , mid + 1 , r);
  74. merge(ind);
  75. }
  76.  
  77. pair<int , ll> query(int ind , int l , int r , int ql , int qr){
  78. if(l > r || ql > qr || l > qr || r < ql || ql == 0 || qr == 0) return make_pair(-1 , -1);
  79.  
  80.  
  81. if(l >= ql && r <= qr){
  82. return make_pair(segTree[ind].node , segTree[ind].dis);
  83. }
  84. int mid = (l + r)/2;
  85.  
  86. pair<int , ll> p1 = query(2*ind , l , mid , ql , qr);
  87. pair<int , ll> p2 = query(2*ind + 1 , mid + 1 , r , ql , qr);
  88.  
  89. if(p1.second > p2.second) return p1;
  90. return p2;
  91. }
  92.  
  93. void update(int ind , int l , int r , int point , ll W){
  94.  
  95. if(l > r || point < l || point > r ) return;
  96.  
  97. if(l == r){
  98. segTree[ind].dis += W;
  99. return;
  100. }
  101.  
  102. int mid = (l + r)/2;
  103. update(2*ind , l , mid , point , W);
  104. update(2*ind + 1 , mid + 1 , r , point , W);
  105. merge(ind);
  106. }
  107.  
  108. pair<int , ll> find_farthest(int x){
  109. // returns pair of the base node and distance
  110.  
  111.  
  112.  
  113. int max_node = x;
  114. ll max_dis = -(*se[x].begin()).first;
  115. pair<int , ll> ans = make_pair(max_node , max_dis);
  116.  
  117. pair<int , ll> p1 = query(1 , 1 , N , x + 1 , N);
  118.  
  119. p1.second = p1.second - pref[x];
  120.  
  121. pair<int , ll> p2 = query(1 , 1 , N , 1 , x - 1);
  122.  
  123. p2.second = p2.second + alpha - pref[x];
  124.  
  125. if(x == 1) p2 = p1;
  126. if(x == N) p1 = p2;
  127.  
  128. vector<pair<ll , pair<int , int> > > temp;
  129.  
  130.  
  131. int u = p1.first; ll u_dis = p1.second; ll u_tim = now_time[u];
  132. int v = p2.first; ll v_dis = p2.second; ll v_tim = now_time[v];
  133.  
  134. max_node = u;
  135. max_dis = u_dis;
  136.  
  137. if((u_dis > v_dis) || (u_dis == v_dis && u_tim > v_tim)){
  138.  
  139. }
  140. else{
  141. p1 = p2;
  142. max_node = v;
  143. max_dis = v_dis;
  144. }
  145.  
  146. p2 = ans;
  147.  
  148. v = p2.first; v_dis = p2.second; v_tim = now_time[v];
  149.  
  150. if((u_dis > v_dis) || (u_dis == v_dis && u_tim > v_tim)){
  151.  
  152. }
  153. else{
  154. p1 = p2;
  155. max_node = v;
  156. max_dis = v_dis;
  157. }
  158.  
  159.  
  160. ans.first = max_node;
  161. ans.second = max_dis;
  162.  
  163. return ans;
  164. }
  165.  
  166. int main(){
  167.  
  168. si(N);
  169. //if(N < 10000) cout<<pref[M+M];
  170. ll el;
  171. for(int i = 1 ; i <= N ; i++){
  172. sll(el);
  173. alpha += el;
  174. pref[i + 1] = pref[i] + el;
  175. se[i].insert(make_pair(0 , 0));
  176. }
  177. build(1 , 1 , N);
  178.  
  179. int q;
  180. si(q);
  181.  
  182. while(q--){
  183.  
  184. timer++;
  185. int typ, x;
  186. ll w;
  187. si(typ); si(x);
  188.  
  189. if(typ == 1){
  190. pair<int , ll> P = find_farthest(x);
  191. int y = P.first;
  192. ll omega = P.second;
  193. sll(w);
  194.  
  195. pair<ll , ll> PX = *(se[y].begin());
  196. se[y].erase(se[y].begin());
  197. PX.first -= w;
  198. PX.second = -timer;
  199. se[y].insert(PX);
  200. now_time[y] = -timer;
  201.  
  202. update(1 , 1 , N , y , w);
  203.  
  204. }
  205.  
  206. else if(typ == 2){
  207. sll(w);
  208. ll pres = -(*se[x].begin()).first;
  209. se[x].insert(make_pair(-w , -timer));
  210.  
  211. if(w >= pres){
  212. now_time[x] = -timer;
  213. update(1 , 1 , N , x , w - pres);
  214. }
  215. }
  216.  
  217. else if(typ == 3){
  218. pair<int , ll> P = find_farthest(x);
  219. int y = P.first;
  220. ll omega = P.second;
  221.  
  222. pair<ll , ll> PX = *(se[y].begin());
  223. se[y].erase(se[y].begin());
  224. ll max_dis = -PX.first;
  225. ll new_max = -(*se[y].begin()).first;
  226. now_time[y] = -(*se[y].begin()).second;
  227. update(1 , 1 , N , y , new_max - max_dis);
  228. }
  229.  
  230. else{
  231. pair<int , ll> P = find_farthest(x);
  232. int y = P.first;
  233. ll omega = P.second;
  234. printf("%lld\n" , omega);
  235. }
  236. }
  237.  
  238.  
  239. }
Success #stdin #stdout 0.02s 7808KB
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