Submission #1027310

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027310		LIF	Robot Contest (IOI23_robot)	C++17	24 / 100	132 ms	5972 KiB

robot

#include "robot.h"
#include<bits/stdc++.h>
using namespace std;
enum state
{
    Start, //當在起點，且已經存在1,代表已經回到起點
    Extent, //如果存在0時向四周擴展
    Back, //如果不存在0時，代表應返回
    End, //-2 -2 
    Clear, //無路可走時，正式clear,返回到1和4;
    Clear_extent, //當周圍存在4時，去找2
};
class robot
{
public:
    state robot_state;
    vector<int> S;
    robot(){return;}
    robot(vector<int> _S)//init;
    {
        S = _S;
        if(S[2] == -2 && S[3] == -2)
        {
            robot_state = state::End;
            return;
        }
        for(int i=0;i<5;i++)
        {
            if(S[i] == 1 || S[i] == 4) // 周圍存在4;
            {
                for(int j=1;j<5;j++)
                {
                    if(S[j] == 2)
                    {
                        robot_state = state::Clear_extent;
                        return;
                    }
                }
                if((S[1] == -2 && S[4] == -2) && (S[2] == 1 || S[3] == 1))
                {
                    robot_state = state::Start;
                    return;
                }
                robot_state = state::Clear;
                return;
            }
        }
        for(int it = 1;it<5;it++)
        {
            if(S[it] == 0)
            {
                robot_state = state::Extent;
                return;
            }
        }
        robot_state = state::Back;
        return;
    }
};
class instruction
{
public:
    robot now_robot;
    int Z;
    char A = 'H';
    char find_direction(int num)
    {
        if(num == 1)return 'W';
        if(num == 2)return 'S';
        if(num == 3)return 'E';
        if(num == 4)return 'N';
    }
    instruction(robot _now)
    {
        now_robot = _now;
        if(now_robot.robot_state  == state::End)
        {
            Z = 1;
            for(int i=1;i<5;i++)
            {
                if(now_robot.S[i] == 3)A = find_direction(i);
            }
        }
        if(now_robot.robot_state == state::Extent)
        {
            for(int i=1;i<5;i++)
            {
                if(now_robot.S[i] == 0)
                {
                    Z = 3;
                    A = find_direction(i);
                }
            }
        }
        if(now_robot.robot_state == state::Back)
        {
            for(int i=1;i<5;i++)
            {
                if(now_robot.S[i] == 3)
                {
                    Z = 2;
                    A = find_direction(i);

                }
            }
        }
        
        if(now_robot.robot_state == state::Clear)
        {
            //沿著1或4的方向去走;
            bool flag = false;
            for(int i=1;i<5;i++)
            {
                if(now_robot.S[i] == 4)
                {
                    flag = true;
                    A = find_direction(i);
                    Z = 0;
                }
            }
            if(flag == false)
            {
                Z = 1;
                for(int i=1;i<5;i++)
                {
                    if(now_robot.S[i] == 3)
                    {
                        A = find_direction(i);
                        Z = 1;
                    }
                }
            }
        }
        if(now_robot.robot_state == state::Clear_extent)
        {
            for(int i=1;i<5;i++)
            {
                if(now_robot.S[i] == 2)
                {
                    Z = 4;
                    A = find_direction(i);
                }
            }
        }
        if(now_robot.robot_state == state::Start)
        {
            Z = 1;
            A = 'T';
        }
        return;
    } 
    void work() //除構造函數外，應寫成 void function() / int function()的形式
    {
        /*if(now_robot.S[0] == 1 && now_robot.S[1] == 3 && now_robot.S[2] == -2 && now_robot.S[3] == 1 && now_robot.S[4] == -1)
        {
            cout<<now_robot.robot_state<<" "<<Z<<" "<<A<<endl;
        }*/
        set_instruction(now_robot.S,Z,A);
        return;
    }
};
void program_pulibot()
{
    vector<int> v;
    for(int i=-2;i<=4;i++)v.push_back(i);
    for(auto it : v)//可以縮進取代多個大括號
        for(auto it2 : v)
            for(auto it3 : v)
                for(auto it4 : v)
                    for(auto it5 : v)
                    {
                        vector<int> temp;
                        temp = {it,it2,it3,it4,it5};
                        robot now_robot(temp);

                        instruction now_instruction(now_robot);
                        now_instruction.work();                     
                    }
    //注 s[0]原地，s[1] 西方，s[2]南方，s[3]東方，s[4]北方

}

Compilation message (stderr)

robot.cpp: In member function 'char instruction::find_direction(int)':
robot.cpp:72:5: warning: control reaches end of non-void function [-Wreturn-type]
   72 |     }
      |     ^

• Subtask 0: 0 / 0
• Subtask 1: 6 / 6
• Subtask 2: 0 / 10
• Subtask 3: 18 / 18
• Subtask 4: 0 / 20
• Subtask 5: 0 / 46