E. Two Teams

E. Two Teams

theme:n个人排成一行,每个人有一个属性值。先两个教练轮流选队员。每次从中选出属性值最大的人,并选出他左右连续的各k个人出来(如果有的话则出队),直至每个人都成为一对。求每个人最终属于哪个队。1<=n,k<=2e5

solution:模拟题。用双向队列模拟。首先预处理出每个位置紧挨着的前后下标,之后按属性从大到小排列,按l=L[l],r=R[r]左右遍历即可,每次遍历更新L[r]=l,R[l]=r

#include<bits/stdc++.h>
#include<vector>
#include<algorithm>
#define far(i,t,n) for(int i=t;i<n;++i)
#define pb(a) push_back(a)
#define lowbit(x) x&(-x)
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
int inf=0x3f3f3f3f;
int mod=998244353;
const int maxn=200010;

pair<int,int>a[maxn];
int L[maxn],R[maxn];

int ans[maxn];

int main()
{
    int n,k;
    cin>>n>>k;
    far(i,1,n+1)
    {
        scanf("%d",&a[i].first);
        a[i].second=i;
        L[i]=i-1;
        R[i]=i+1;
    }

    sort(a+1,a+n+1,greater<pair<int,int>>());
    int flag=1;
    far(i,1,n+1)
    {
        if(ans[a[i].second])
            continue;
        ans[a[i].second]=flag;
        int t=k,l,r=R[a[i].second];
        while(t--&&r<=n)
        {
            ans[r]=flag;
            r=R[r];
        }
        t=k,l=L[a[i].second];
        while(t--&&l>=1)
        {
            ans[l]=flag;
            l=L[l];
        }
        R[l]=r;
        L[r]=l;
        flag=flag==1?2:1;
    }
    far(i,1,n+1)
        printf("%d",ans[i]);
    puts("");
}

 

### Sensor Interface Engineer Responsibilities and Skills #### Key Responsibilities A sensor interface engineer focuses on designing, developing, and maintaining interfaces between sensors and various systems or platforms. The primary tasks involve ensuring seamless communication between hardware components like sensors and software applications. The role includes: - Designing robust circuits to connect different types of sensors (temperature, pressure, motion, etc.) with microcontrollers or computers. - Developing firmware for embedded systems that can efficiently process raw data collected by these sensors[^1]. ```cpp // Example C++ code snippet showing basic setup for reading temperature sensor value via I2C protocol #include <Wire.h> #define SENSOR_ADDRESS 0x48 // Address of the ADC device which connects thermometer void setup() { Wire.begin(); } float readTemperature() { int temp_raw; float voltage; Wire.requestFrom(SENSOR_ADDRESS, 2); // Request two bytes from slave device #SENSOR_ADDRESS while(Wire.available()) { // Slave may send less than requested (abnormal case) temp_raw = Wire.read(); // receive high byte (overwrites previous reading) temp_raw <<= 8; // shift high byte to be high 8 bits temp_raw |= Wire.read(); // receive low byte as lower 8 bits } voltage = ((temp_raw * 3.3) / pow(2, 12)); // Convert digital signal back into analog form return (voltage - 0.5) * 100; // Calculate actual Celsius degrees based on datasheet formula } ``` - Implementing calibration procedures so that measurements taken are accurate across all operating conditions. - Troubleshooting issues related to connectivity problems or erroneous readings reported by connected devices. - Collaborating closely with cross-functional teams including mechanical engineers, electrical engineers, and software developers during product development cycles. #### Required Skills To excel in this position, one should possess strong technical expertise along with soft skills such as effective problem-solving abilities and excellent interpersonal communication capabilities. Technical competencies required include but not limited to: - Proficiency in programming languages commonly used within electronics projects—such as Python, C/C++, MATLAB/Simulink—and experience working directly at a command line terminal environment when necessary. - Understanding principles behind common protocols utilized for interfacing purposes e.g., SPI/I²C/UART/JTAG/etc.. - Familiarity with PCB layout tools alongside schematic capture packages would also prove beneficial since custom board designs might sometimes become part of job duties too. - Knowledge about real-time processing techniques especially concerning big datasets generated continuously through IoT networks could enhance performance metrics significantly[^3]. Soft skill requirements encompass: - Excellent verbal & written expression proficiency enabling clear articulation ideas both internally amongst colleagues plus externally towards clients/customers alike. - Strong organizational habits allowing simultaneous management multiple assignments without compromising quality standards set forth initially agreed upon timelines. - Demonstrated leadership qualities fostering collaborative work culture promoting innovation whilst adhering strictly ethical guidelines established throughout organization structure.
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