题意
题目链接
Sol
挺简单的吧。考虑两个元素什么时候不满足条件
设\(a_i\)与\(a_i + 1\)最高的不同位分别为0 1
,显然\(S\)的这一位必须为\(0\),否则这一位必须为\(1\)
剩下的就没有限制条件了
时间复杂度:\(nlogn\)??????!!!!!!
#include<bits/stdc++.h>
using namespace std;
const int MAXN = 30001;
inline int read() {
int x = 0, f = 1; char c = getchar();
while (c < '0' || c > '9') {if (c == '-') f = -1; c = getchar();}
while (c >= '0' && c <= '9') x = x * 10 + c - '0', c = getchar();
return x * f;
}
int N, a[5][MAXN], rak[5][MAXN], base = 1;
bitset<MAXN> B[5][175];
main() {
N = read(); base = sqrt(N);
for (int i = 1; i <= N; i++) for (int j = 0; j < 5; j++) a[j][i] = read(), rak[j][a[j][i]] = i;
for (int j = 0; j < 5; j++)
for (int i = 1; i * base <= N; i++)
for(int k = 1; k <= i * base; k++) B[j][i].set(rak[j][k]);
for (int i = 1; i <= N; i++) {
bitset<MAXN> tmp, cal; tmp.set();
for(int j = 0; j < 5; j++) {
cal.reset();
int now = a[j][i] / base;
cal |= B[j][now];
for(int k = now * base + 1; k <= a[j][i]; k++) cal.set(rak[j][k]);
tmp &= cal;
}
printf("%d\n", tmp.count() - 1);
}
}