从网上复制来的快读不知道为什么本地正确提交wa改用cin就过了

#include<iostream>
using namespace std;
int n,k,dp[31],ans,stack[32],top; 
void write(int x) {
  static int sta[15];
  int top1 = 0;
  do {
    sta[top1++] = x % 10, x /= 10;
  } while (x);
  while (top1) putchar(sta[--top1] + 48);  
}
inline int read() {
  int x = 0;
  char ch = 0;
  while (ch < '0' || ch > '9') {  
    ch = getchar(); 
  }
  while (ch >= '0' && ch <= '9') {
    x = x * 10 + ch - '0';
    ch = getchar();  
  }
  return x;  
}
int main(){
	n=read();
	while(n--){
		k=read();
		top=ans=0;
		for(int i=0;i<32;i++){
			if(k&(1<<i)){
				stack[++top]=i;
				if(ans<dp[i])
					ans=dp[i];
			}
		}
		for(int i=1;i<=top;i++){
			dp[stack[i]]=ans+1;
		}
	}
	ans=0;
	for(int i=0;i<32;i++)
		if(dp[i]>ans)
			ans=dp[i];
	write(ans);
	return 0;
}