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Submission
# When Author Problem Language CPU Memory
3624 2021-12-21 23:14:00 ewu_ieee21_user_34 Range Equal Query C++ 11 7 ms 3644 kb Wrong Answer - 4
Test Cases
# CPU Memory Points
1 3 ms 3476 kb 1 Accepted
2 3 ms 3484 kb 1 Accepted
3 4 ms 3472 kb 1 Accepted
4 7 ms 3644 kb 0 Wrong Answer
5 0 ms 0 kb 0 Skipped
6 0 ms 0 kb 0 Skipped
7 0 ms 0 kb 0 Skipped
8 0 ms 0 kb 0 Skipped
9 0 ms 0 kb 0 Skipped
10 0 ms 0 kb 0 Skipped
11 0 ms 0 kb 0 Skipped
12 0 ms 0 kb 0 Skipped
13 0 ms 0 kb 0 Skipped
14 0 ms 0 kb 0 Skipped
15 0 ms 0 kb 0 Skipped
16 0 ms 0 kb 0 Skipped
17 0 ms 0 kb 0 Skipped
18 0 ms 0 kb 0 Skipped
19 0 ms 0 kb 0 Skipped
20 0 ms 0 kb 0 Skipped
Source Code
  1. #include<bits/stdc++.h>
  2. #include<ext/pb_ds/assoc_container.hpp>
  3. #include<ext/pb_ds/tree_policy.hpp>
  4. using namespace std;
  5. using namespace __gnu_pbds;
  6.  
  7. template <typename num_t>
  8. using ordered_set = tree<num_t,null_type,less<num_t>,rb_tree_tag,tree_order_statistics_node_update>;
  9.  
  10. const int DEBUGGER = 0;
  11.  
  12. #define io ios_base::sync_with_stdio(0); cin.tie(NULL)
  13. #define mset(a,v) memset(a,v,sizeof(a))
  14. #define lp(i,a,n) for(int i=a;i<n;i++)
  15. #define lpr(i,a,n) for(int i=n-1;i>=a;i--)
  16. #define stlp(it,stl) for(__typeof(stl.begin()) it=stl.begin();it!=stl.end();it++)
  17. #define stlpr(it,stl) for(__typeof(stl.rbegin()) it=stl.rbegin();it!=stl.rend();it++)
  18. #define r(a) a.begin(),a.end()
  19. #define II ({ ll TEMP; cin>>TEMP; TEMP; })
  20. #define SI ({ string TEMP; cin>>TEMP; TEMP; })
  21. #define AI(a) ({ int n=sizeof(a)/sizeof(a[0]); lp(I,0,n)a[I]=II; })
  22. #define AO(a) ({ int n=sizeof(a)/sizeof(a[0]); lp(I,0,n){cout<<(I?" ":"")<<a[I];} if(DEBUGGER)cout<<endl;else cout<<'\n'; })
  23. #define VI(v) ({ lp(I,0,v.size())v[I]=II; })
  24. #define VO(v) ({ lp(I,0,v.size()){cout<<(I?" ":"")<<v[I];} if(DEBUGGER)cout<<endl;else cout<<'\n'; })
  25. #define outa(a) ({ if(DEBUGGER)dbg(a); else cout<<a<<'\n'; })
  26. #define dbg(a) ({ if(DEBUGGER)cout<<#a<<" = "<<a<<endl; })
  27. #define cbit(n,p) ((n)&(1LL<<(p)))
  28. #define sbit(n,p) ((n)|(1LL<<(p)))
  29. #define tbit(n,p) ((n)^(1LL<<(p)))
  30. #define F first
  31. #define S second
  32.  
  33. typedef long long ll;
  34. typedef pair<ll,ll> pll;
  35. typedef vector<ll> vl;
  36.  
  37. const ll MAX = 1e5+5;
  38. const ll MOD = 1e9+7;
  39. const ll INF = 9e18;
  40. const double PI = 3.141592653589793238462;
  41. ll addM(ll a,ll b){return (a+=b)>=MOD?(a-=MOD):a;}
  42. ll subM(ll a,ll b){return (a-=b)<0?(a+=MOD):a;}
  43.  
  44. ll n,m,blc[320],blc2[320],len,ps[320],pr=110017;
  45. vl a,b,blcvl[320];
  46.  
  47. ll bigMOD(ll a,ll x){
  48. if(x==0)return 1;
  49. if(x==1 || a<=1)return a%MOD;
  50. ll r=bigMOD(a,x/2);
  51. r=(r*r)%MOD;
  52. if(x&1)
  53. r=(r*a)%MOD;
  54. return r;
  55. }
  56.  
  57. ll hashval(vl v){
  58. ll ans=0;
  59. ll p_pow=1;
  60. lp(i,0,v.size()){
  61. ans=(ans+v[i]*p_pow)%MOD;
  62. p_pow=(p_pow*pr)%MOD;
  63. }
  64. return ans;
  65. }
  66.  
  67. void init(){
  68. len=(int)sqrt(n)+1;
  69. for(int i=0;i<n;i+=len){
  70. vl ax;
  71. lp(k,i,min(i+len,n))
  72. ax.push_back(a[k]);
  73.  
  74. vl bx;
  75. lp(k,i,min(i+len,m))
  76. bx.push_back(b[k]);
  77.  
  78. blc[i/len]=hashval(ax);
  79. blcvl[i/len]=ax;
  80.  
  81. blc2[i/len]=hashval(bx);
  82. }
  83. }
  84.  
  85. void update(int i,int val){
  86. int c_i=i/len;
  87.  
  88. blcvl[c_i][i%len]=val;
  89. blc[c_i]=hashval(blcvl[c_i]);
  90.  
  91. a[i]=val;
  92. }
  93.  
  94. ll rv(ll i,ll j,int c){
  95. ll sz=j-i+1;
  96. if(!sz)return 0;
  97. if(c)
  98. return blc[i/len]%ps[sz];
  99. else
  100. return (blc[i/len]*bigMOD(ps[len-sz],MOD-2))%MOD;
  101. }
  102.  
  103. bool query(int l,int r){
  104. bool ans=1;
  105. int c_l=l/len,c_r=r/len;
  106. if(c_l==c_r){
  107. for(int i=l,j=0;i<=r;i++,j++)
  108. ans&=(a[i]==b[j]);
  109. }
  110. else{
  111. int j=0;
  112. for(int i=l, l_end=(c_l+1)*len-1;i<=l_end;i++,j++){
  113. ans&=a[i]==b[j];
  114. }
  115. dbg(ans);
  116.  
  117. for(int i=c_l+1;i<=c_r-1;i++,j+=len){
  118. ll in1=j;
  119. ll in2=((j/len)+1)*len-1;
  120. ll in3=j+len-1;
  121.  
  122. ll hs=(((rv(in1,in2,1)*ps[in2-in1+1])%MOD)+rv(in2+1,in3,0))%MOD;
  123.  
  124. ans&=blc[i]==hs;
  125. }
  126. dbg(ans);
  127.  
  128. for(int i=c_r*len;i<=r;i++,j++){
  129. ans&=a[i]==b[j];
  130. }
  131. dbg(ans);
  132. }
  133. return ans;
  134. }
  135.  
  136. void solve(){
  137. ps[0]=1;
  138. lp(i,1,320)
  139. ps[i]=(ps[i-1]*pr)%MOD;
  140.  
  141.  
  142. map<ll,ll>mp;
  143. vl tmp;
  144.  
  145. n=II,m=II;
  146. lp(i,0,n)a.push_back(II),tmp.push_back(a.back());
  147. lp(i,0,m)b.push_back(II),tmp.push_back(b.back());
  148.  
  149. sort(r(tmp));
  150. ll v=1;
  151. lp(i,0,tmp.size())
  152. if(mp.find(tmp[i])==mp.end())
  153. mp[tmp[i]]=v++;
  154.  
  155. lp(i,0,n)a[i]=mp[a[i]];
  156. lp(i,0,m)b[i]=mp[b[i]];
  157.  
  158. init();
  159.  
  160. if(DEBUGGER){
  161. lp(i,0,n)cout<<a[i]<<' ';cout<<endl;
  162. lp(i,0,m)cout<<b[i]<<' ';cout<<endl;
  163. dbg(len);
  164. lp(i,0,len)cout<<blc[i]<<' ';cout<<endl;
  165. lp(i,0,len){
  166. lp(j,0,blcvl[i].size())
  167. cout<<blcvl[i][j]<<' ';
  168. cout<<", ";
  169. }cout<<endl;
  170. lp(i,0,len)cout<<blc2[i]<<' ';cout<<endl;
  171. }
  172.  
  173. ll q=II;
  174. while(q--){
  175. if(II==1){
  176. ll i=II-1,x=II;
  177. if(mp.find(x)==mp.end())
  178. mp[x]=v++;
  179. x=mp[x];
  180. update(i,x);
  181. }
  182. else{
  183. ll l=II-1,r=II-1;
  184. if(query(l,r)) outa("YES");
  185. else outa("NO");
  186. }
  187. }
  188. }
  189.  
  190. int main(void){
  191. io;
  192. int multipletest=0;
  193. if(multipletest){
  194. int tc;
  195. cin>>tc;
  196. while(tc--)
  197. solve();
  198. }
  199. else
  200. solve();
  201. return 0;
  202. }
  203.