#include "communication.h"
#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define chmax(x, v) x = max(x, v)
#define chmin(x, v) x = min(x, v)
#define pb push_back
#define pii pair<int, int>
#define sz(x) (int)x.size()
#define x first
#define y second
#define int long long
using namespace std;
void encode(int N, int X){
if (X == 1){
for (int i = 0; i < 6; ++i)
int ans = send(i%2);
}
else if (X == 2){
for (int i = 0; i < 6; ++i)
int ans = send(1 - i%2);
}
else {
for (int i = 0; i < 6; ++i)
int ans = send(i%3 == 0);
}
}
vector<int> un = {0, 1, 0, 1, 0, 1}, deux = {1, 0, 1, 0, 1, 0}, trois = {1, 0, 0, 1, 0, 0};
pii decode(int N){
vector<int> vals;
for (int i = 0; i < 6; ++i)
vals.pb(receive());
for (int mask = 0; mask < (1 << 6); ++mask){
bool valid = true;
vector<int> inds;
for (int i = 0; i < 6; ++i){
if ((mask&(1 << i)) > 0)
inds.pb(i);
}
for (int i = 0; i < sz(inds) - 1; ++i)
valid &= (inds[i] != inds[i + 1] - 1);
if (!valid) continue;
vector<int> change = vals;
for (int ind : inds)
change[ind] ^= 1;
if (change == un)
return {1, 1};
if (change == deux)
return {2, 2};
if (change == trois)
return {3, 3};
}
}
Compilation message
communication.cpp: In function 'void encode(long long int, long long int)':
communication.cpp:17:23: warning: unused variable 'ans' [-Wunused-variable]
17 | int ans = send(i%2);
| ^~~
communication.cpp:21:23: warning: unused variable 'ans' [-Wunused-variable]
21 | int ans = send(1 - i%2);
| ^~~
communication.cpp:25:23: warning: unused variable 'ans' [-Wunused-variable]
25 | int ans = send(i%3 == 0);
| ^~~
communication.cpp: In function 'std::pair<long long int, long long int> decode(long long int)':
communication.cpp:32:19: warning: control reaches end of non-void function [-Wreturn-type]
32 | vector<int> vals;
| ^~~~
/usr/bin/ld: /tmp/cci2B14E.o: in function `_do_encode(int, int)':
interface.cpp:(.text+0x1d9): undefined reference to `encode(int, int)'
/usr/bin/ld: /tmp/cci2B14E.o: in function `_do_decode(int)':
interface.cpp:(.text+0x219): undefined reference to `decode(int)'
/usr/bin/ld: /tmp/cci2B14E.o: in function `main':
interface.cpp:(.text.startup+0xac): undefined reference to `decode(int)'
/usr/bin/ld: interface.cpp:(.text.startup+0x15c): undefined reference to `encode(int, int)'
collect2: error: ld returned 1 exit status
