Submission #596582

#TimeUsernameProblemLanguageResultExecution timeMemory
596582DeepessonBrperm (RMI20_brperm)C++17
50 / 100
3079 ms52180 KiB
#include <bits/stdc++.h> #define MAX 505000 void init(int n, const char s[]); int query(int i, int k); int prefsum[MAX][26]; int inverte(int x,int k){ int ans=0; for(int i=0;i!=k;++i){ int u = (k-1)-i; if((1<<i)&x)ans+=1<<u; } return ans; } int lim; char vals[MAX]; void init(int n, const char s[]) { for(int j=0;j!=n;++j){ vals[j]=s[j]; for(int k=0;k!=26;++k){ prefsum[j+1][k]=prefsum[j][k]; } prefsum[j+1][s[j]-'a']++; } lim = n; } int count=0; int query(int i, int k) { int sz = 1<<(k); if(i+sz>lim)return 0; int r=i+sz-1; for(int j=0;j!=sz;++j){ int mirror = inverte(j,k); if(vals[mirror+i]!=vals[j+i])return 0; ++count; if(count==55000)break; } return 1; }

Compilation message (stderr)

brperm.cpp: In function 'int query(int, int)':
brperm.cpp:32:9: warning: unused variable 'r' [-Wunused-variable]
   32 |     int r=i+sz-1;
      |         ^
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...