#include <utility>
#include <bits/stdc++.h>
using namespace std;
/**
* use this function in encode when you want to send a certain signal
* (it might come out wrong, and the return value tells you which signal
* was actually sent)
*/
int send(int);
/**
* use this function in decode; it returns the next signal that was actually
* sent during the corresponding call of encode
*/
int receive();
/**
* implement these two functions yourself
*/
void encode(int N, int X){
for(int j = 0; j < 2; ++j){
bool val = (1<<j)&X;
send(val);
send(val);
}
}
pair<int, int> decode(int N) {
int a = 0, b = 0;
int x[4];
for(int j = 0; j < 4; ++j) x[j] = receive();
if(x[0] == x[1]){
if(x[0] == 1){
a += 1;
b += 1;
}
}else if(x[0] != x[1]){
a += 1;
}
if(x[2] == x[3]){
if(x[2] == 1){
a += 2;
b += 2;
}
}else if(x[2] != x[3]){
b += 2;
}
if(x[0] != x[1] && x[2] != x[3]) a = b = 3;
return {a, b};
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
200 KB |
Not correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
21 ms |
200 KB |
Not correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
