5 条题解

  • 1
    @ 2022-8-13 23:00:17
    #include <iostream>
    #include <algorithm>
    using namespace std;
    const int N=1e5 + 10;
    const int INF=0x3f3f3f3f;
    int n,a[N],dp[N],len=1,dp1[N],lenn=1;
    int main()
    {
    	while(cin>>a[++n]);
    	n--;
    	dp[1]=dp1[1]=a[1];
    	for(int i=2;i<=n;i++)
    	{
    		if(a[i] <= dp[len])
    			dp[++len] = a[i];
    		else
    		{
    			int pos = upper_bound(dp+1,dp+1+len,a[i],greater<int>())-dp;
    			dp[pos]=a[i];
    		}
    		if(a[i]>dp1[lenn])
    		{
    			dp1[++lenn]=a[i];
    		}
    		else
    		{
    			int pos=lower_bound(dp1+1,dp1+lenn+1,a[i])-dp1;
    			dp1[pos]=a[i];
    		}
    	}
    	cout<<len<<endl<< lenn;
    	return 0;
    }
    
    • 0
      @ 2023-12-10 16:40:55
      /****************************************
      Note:
      ****************************************/
      #include <queue>
      #include <math.h>
      #include <stack>
      #include <vector>
      #include <stdio.h>
      #include <iostream>
      #include <vector>
      #include <iomanip>
      #include <string.h>
      #include <cstring>
      #include <algorithm>
      #define int long long
      using namespace std;
      const int N = 1e6 + 10;
      const int INF = 0x3f3f3f3f;
      int a[N];
      int dp[N];
      int f[N];
      int n;
      int maxx = -1;
      signed main(){
      	ios::sync_with_stdio(false);
      	cin.tie(0);
      	cout.tie(0);
      	while(cin >> a[n+1])
      //		cin >> a[n+1];
      		n++;
      	int len = 0;
      	dp[len] = INF;
      	for(int i=1;i<=n;i++){
      		if(a[i]<=dp[len])
      			dp[++len]=a[i];
      		else{
      			int l,r;
      			l = 0,r = len;
      			while(l<r){
      				int mid = l + r + 1 >> 1;
      				if(dp[mid] >= a[i])
      					l = mid;
      				else
      					r = mid - 1;
      			}
      			dp[l+1] = a[i];
      		}
      	}
      	cout << len << endl;
      	
      	len = 0;
      	dp[len] = -INF;
      	for(int i=1;i<=n;i++){
      		if(a[i]>dp[len])
      			dp[++len]=a[i];
      		else{
      			int l,r;
      			l = 0,r = len;
      			while(l<r){
      				int mid = l + r + 1 >> 1;
      				if(dp[mid] < a[i])
      					l = mid;
      				else
      					r = mid - 1;
      			}
      			dp[l+1] = a[i];
      		}
      	}
      	cout << len << endl;
      	return 0;
      }
      
      
      • 0
        @ 2021-10-24 11:41:14
        /*****************************************
        Note  : 
        ******************************************/
        #include <queue>
        #include <math.h>
        #include <stack>
        #include <stdio.h>
        #include <iostream>
        #include <string.h>
        #include <algorithm>
        using namespace std;
        #define LL long long
        const int N = 1e6 + 10;
        const int INF = 0x3f3f3f3f;
        int a[N];
        int dp[N];
        int main()
        {
            int n = 0;
            while(cin >> a[n])
                n++;
            int len = 1;
            dp[0] = INF;
            for(int i = 0 ; i < n ; i++)
            {
                if(dp[len - 1] >= a[i])
                    dp[len++] = a[i];
                else
                {
                    int l = 0;
                    int r = len - 1;
                    while(l < r)
                    {
                        int mid = l + r >> 1;
                        if(dp[mid] >= a[i])
                            l = mid + 1;
                        else
                            r = mid;
                    }
                    dp[l] = a[i];
                }
            }
            cout << len - 1 << endl;
            memset(dp,-1,sizeof(dp));
            len = 1;
            for(int i = 0 ; i < n ; i++)
            {
                if(dp[len - 1] < a[i])
                    dp[len++] = a[i];
                else
                {
                    int l = 0;
                    int r = len - 1;
                    while(l < r)
                    {
                        int mid = l + r >> 1;
                        if(dp[mid] >= a[i])
                            r = mid;
                        else
                            l = mid + 1;
                    }
                    if(l != 0)
                        dp[l] = a[i];
                }
            }
            cout<< len - 1 <<endl;
            return 0;
        }
        • 0
          @ 2021-10-24 11:40:55
          /**************
          Note:咸鱼不贤于
          **************/
          #include <cmath>
          #include <cstring>
          #include <algorithm>
          #include <cstdio>
          #include <iostream>
          #include <queue>
          #include <stack>
          #include <string>
          using namespace std;
          #define LL long long
          const int N = 1e6 + 10;
          const int INF = 0x3f3f3f3f;
          int a[N];
          int dp[N];
          int main()
          {
          	int n = 0 ; 
          	while(cin >> a[n])
          	{
          		n++;
          	}
          	int len = 1;
          	dp[0] = 0x3f3f3f3f;
          	for(int i = 0 ; i < n ; i++)
          	{
          		if(dp[len-1] >= a[i])
          			dp[len++] = a[i];
          		else 
          		{
          			int l = 0,r = len-1;  
          			while(l < r)
          			{
          				int mid = l + r  >> 1;
          				if(dp[mid] >= a[i])
          					l = mid + 1;
          				else 
          					r = mid;
          			}
          			dp[l] = a[i];
          		}
          	}
          	cout << len -1  << endl;
          	memset(dp,-1,sizeof(dp));
          	len = 1;
          	for(int i = 0 ; i < n ; i++)
          	{
          		if(dp[len-1] < a[i])
          			dp[len++] = a[i];
          		else 
          		{
          			int l = 0,r = len-1;
          			while(l < r)
          			{
          				int mid = l + r >> 1;
          				if(dp[mid] >= a[i])
          					r = mid;
          				else 
          					l = mid + 1;
          			}
          			if(l != 0)
          				dp[l] = a[i];
          		}
          	}
          	cout << len-1 << endl;
          	return 0;
          }
          
          • -2
            @ 2021-10-24 11:36:49
            /*****************************************
            Note  : 
            ******************************************/
            #include <queue>
            #include <math.h>
            #include <stack>
            #include <stdio.h>
            #include <iostream>
            #include <vector>
            #include <iomanip>
            #include <string.h>
            #include <algorithm>
            using namespace std;
            #define LL long long
            const int N = 1e5 + 10;
            const int INF = 0x3f3f3f3f;
            int a[N];
            int dp[N];
            bool cmp(int a, int b)
            {
            	return a > b;
            }
            int main()
            {
            	int len = 1;
            	while(scanf("%d",&a[len]) != EOF)
            		len++;
            	int last = 0;
            	dp[0] = INF;
            	for(int i = 1 ; i < len ; i++)
            	{
            		if(dp[last] >= a[i])
            			dp[++last] = a[i];
            		else 
            		{
            			int num = upper_bound(dp+1 , dp+last+1 , a[i],cmp) - dp;
            			dp[num ] = a[i];
            		}
            	}
            	cout << last << endl;
            
            	last = 0;
            	memset(dp , 0 , sizeof dp);
            	dp[0] = -INF;
            	for(int i = 1 ; i < len ; i++)
            	{
            		if(dp[last] < a[i])
            			dp[++last] = a[i];
            		else 
            		{
            			int num = lower_bound(dp+1 , dp+last+1 , a[i]) - dp;
            			dp[num] = a[i];
            		}
            	}
            	cout << last << endl;
            }
            
            • 1

            信息

            ID
            641
            时间
            1000ms
            内存
            256MiB
            难度
            7
            标签
            递交数
            291
            已通过
            63
            上传者