답안 #857196

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
857196	2023-10-05T14:42:31 Z	lolismek	Brperm (RMI20_brperm)	C++14	컴파일 오류	0 ms	0 KB

brperm

    #include "brperm.h"

    #include <iostream>

    using namespace std;

    const long long NMAX = 5e5;
    const long long LOGMAX = 19;

    const long long B = 29;
    const long long MOD = 1e9 + 7;

    long long dp[NMAX + 1][LOGMAX + 1][LOGMAX + 1];
    long long powB[NMAX + 1];

    long long h[NMAX + 1];

    void init(int n, const char s[]){
        powB[0] = 1;
        for(long long i = 1; i <= NMAX; i++){
            powB[i] = (1ll * powB[i - 1] * B) % MOD;
        }
        for(long long i = 1; i <= n; i++){
            h[i] = ((1ll * h[i - 1] * B) % MOD + (s[i - 1] - 'a' + 1)) % MOD;
        }
        long long pw = 1, pwind = 0;
        while(pw * 2 <= n){
            pw *= 2;
            pwind++;
        }

        for(long long k = pwind; k >= 0; k--){
            for(long long j = 0; (1 << j) <= n; j++){
                for(long long i = 1; i <= n; i++){
                    if(j == 0){
                        dp[i][j][k &axxyxxyb 1] = (s[i - 1] - 'a' + 1);
                    }else{
                        if(i + ((1 << j) - 1) * (1 << k) <= n){
                            dp[i][j][k & 1] = ((1ll * dp[i][j - 1][(k + 1) & 1] * powB[(1 << (j - 1))]) % MOD + dp[i + (1 << k)][j - 1][(k + 1) & 1]) % MOD;
                        }
                    }
                }
            }
        }

        return;
    }

    int query(int i, int k){
        ++i;
        long long H1 = dp[i][k][0];
        long long H2 = (1ll * h[i + (1 << k) - 1] + MOD - ((1l * h[i - 1] * powB[(1 << k)]) % MOD)) % MOD;
        return (H1 == H2);
    }

Compilation message

brperm.cpp: In function 'void init(int, const char*)':
brperm.cpp:36:37: error: 'axxyxxyb' was not declared in this scope
   36 |                         dp[i][j][k &axxyxxyb 1] = (s[i - 1] - 'a' + 1);
      |                                     ^~~~~~~~
brperm.cpp:36:45: error: expected ']' before numeric constant
   36 |                         dp[i][j][k &axxyxxyb 1] = (s[i - 1] - 'a' + 1);
      |                                             ^~
      |                                             ]