- C++
1999
- 2025-1-20 13:25:27 @
#include<iostream>
#include<cstdio>
using namespace std;
const int N = 1005;
int n, a[N];
int dp[N], f[N];
int main(void)
{
while(cin >> a[++n]);
n--;
// 第一问,显然就是求最长不上升子序列
for(int i = 1; i <= n; i++)
{
dp[i] = 1;
for(int j = 1; j < i; j++)
{
if(a[i] <= a[j]) dp[i] = max(dp[i], dp[j] + 1);
}
}
int ans = 1;
for(int i = 1;i <= n; i++) ans = max(ans, dp[i]);
cout << ans << endl;
//第二问,考虑贪心
int m = 0;
for(int i = 1; i <= n; i++)
{
int left = 1, right = m;
if(m == 0)
{f[++m] = a[i];continue;}
int res = 0;
while(left <= right)
{
int mid = (left + right) / 2;
if(f[mid] >= a[i])
{
res = mid;
right = mid - 1;
}
else left = mid + 1;
}
if(res) f[res] = a[i];
else f[++m] = a[i];
}
cout << m << endl;
return 0;
}
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