Submission #823768

#	Time	Username	Problem	Language	Result	Execution time	Memory
823768		Amylopectin	Flight to the Ford (BOI22_communication)	C++17	0 / 100	787 ms	1720 KiB

communication

#include"communication.h"
#include <stdio.h>
#include <iostream>
#include <vector>
#include <stdlib.h>
#include <time.h>
using namespace std;
const int mxn = 510;
int dran[mxn] = {};
void encode(int n, int x) 
{
    int i,j,cn,cm,fn,fm,cou = 0,cret,csta;
    srand(time(0));
    for(i=0; i<410; i++)
    {
        if(rand() %3 == 2)
        {
            dran[i] = 1;
        }
        else 
        {
            dran[i] = 0;
        }
    }
    for(i=0; i<30; i++)
    {
        if((1<<i) & x)
        {
            cn = 1;
        }
        else 
        {
            cn = 0;
        }
        // cm = (cn + dran[cou]) & 1;
        cou ++;
        cret = send(cn);
        if(cret == cn)
        {
            csta = 0;
        }
        else 
        {
            csta = 1;
        }
        while(1)
        {
            // cm = (cn + dran[cou]) & 1;
            cou ++;
            cret = send(cn);
            if(csta == 0)
            {
                if(cret == cn)
                {
                    break;
                }
            }
            csta = (csta + 1) & 1;
        }
    }
    return ;
}

std::pair<int, int> decode(int n) 
{
    int i,j,m,cn,cm,fn,fm,cva = 0,be;
    for(i=0; i<30; i++)
    {
        be = receive();
        while(1)
        {
            cn = receive();
            if(cn == be)
            {
                cva += (cn<<i);
                break;
            }
            be = cn;
        }
    }
    return {cva,cva+1};
}

Compilation message (stderr)

communication.cpp: In function 'void encode(int, int)':
communication.cpp:12:11: warning: unused variable 'j' [-Wunused-variable]
   12 |     int i,j,cn,cm,fn,fm,cou = 0,cret,csta;
      |           ^
communication.cpp:12:16: warning: unused variable 'cm' [-Wunused-variable]
   12 |     int i,j,cn,cm,fn,fm,cou = 0,cret,csta;
      |                ^~
communication.cpp:12:19: warning: unused variable 'fn' [-Wunused-variable]
   12 |     int i,j,cn,cm,fn,fm,cou = 0,cret,csta;
      |                   ^~
communication.cpp:12:22: warning: unused variable 'fm' [-Wunused-variable]
   12 |     int i,j,cn,cm,fn,fm,cou = 0,cret,csta;
      |                      ^~
communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:66:11: warning: unused variable 'j' [-Wunused-variable]
   66 |     int i,j,m,cn,cm,fn,fm,cva = 0,be;
      |           ^
communication.cpp:66:13: warning: unused variable 'm' [-Wunused-variable]
   66 |     int i,j,m,cn,cm,fn,fm,cva = 0,be;
      |             ^
communication.cpp:66:18: warning: unused variable 'cm' [-Wunused-variable]
   66 |     int i,j,m,cn,cm,fn,fm,cva = 0,be;
      |                  ^~
communication.cpp:66:21: warning: unused variable 'fn' [-Wunused-variable]
   66 |     int i,j,m,cn,cm,fn,fm,cva = 0,be;
      |                     ^~
communication.cpp:66:24: warning: unused variable 'fm' [-Wunused-variable]
   66 |     int i,j,m,cn,cm,fn,fm,cva = 0,be;
      |                        ^~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 85