답안 #674773

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
674773	2022-12-26T07:42:29 Z	Valera_Grinenko	비밀 (JOI14_secret)	C++17	컴파일 오류	0 ms	0 KB

secret

#include "secret.h"
#include <vector>
using namespace std;

template<class T, int SZ> struct offlineDQ {
  int n;
  T stor[SZ][32-__builtin_clz(SZ)], id = 1;
	vector<T> a;
	T comb (T a, T b) { return Secret(a, b); } // associative operation
	void fill(int l, int r, int ind) {
		if (ind < 0) return;
		int m = (l+r)/2;
		T prod = id;
    for(int i = m - 1; i >= l; i--) stor[i][ind] = prod = comb(a[i],prod);
		prod = id;
    for(int i = m; i < r; i++) stor[i][ind] = prod = comb(prod,a[i]);
		fill(l,m,ind-1); fill(m,r,ind-1);
	}
	void init(int N) {
		n = 1; while ((1<<n) < sz(a)) ++n;
		a.rsz(1<<n); fill(0,(1<<n),n-1);
	}
	T query(int l, int r) {
		if (l == r) return a[l];
		int t = 31-__builtin_clz(r^l);
		return comb(stor[l][t],stor[r][t]);
	}
};

void Init(int N, int A[]) {
  offlineDQ<int, N> odq;
  odq.a.resize(N);
  for(int i = 0; i < N; i++) odq.a[i] = A[i];
  odq.init();
}

int Query(int L, int R) {
  return odq.query(--L, --R);
}

Compilation message

secret.cpp: In function 'void Init(int, int*)':
secret.cpp:31:19: error: 'N' is not a constant expression
   31 |   offlineDQ<int, N> odq;
      |                   ^
secret.cpp:31:19: note: in template argument for type 'int'
secret.cpp:32:7: error: request for member 'a' in 'odq', which is of non-class type 'int'
   32 |   odq.a.resize(N);
      |       ^
secret.cpp:33:34: error: request for member 'a' in 'odq', which is of non-class type 'int'
   33 |   for(int i = 0; i < N; i++) odq.a[i] = A[i];
      |                                  ^
secret.cpp:34:7: error: request for member 'init' in 'odq', which is of non-class type 'int'
   34 |   odq.init();
      |       ^~~~
secret.cpp: In function 'int Query(int, int)':
secret.cpp:38:10: error: 'odq' was not declared in this scope
   38 |   return odq.query(--L, --R);
      |          ^~~