// Bolatulu
#include <bits/stdc++.h>
#include "communication.h"
/*
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
*/
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
#define pb push_back
#define eb emplace_back
#define ins insert
#define F first
#define S second
#define md (tl+tr)/2
#define TL v+v,tl,md
#define TR v+v+1,md+1,tr
#define Tl t[v].l,tl,md
#define Tr t[v].r,md+1,tr
#define all(x) (x).begin(),(x).end()
#define yes cout << "YES\n"
#define no cout << "NO\n"
// #define int long long
#define file(s) freopen(s".in", "r", stdin); freopen(s".out", "w", stdout);
#define ld long double
using namespace std;
int binpow(int a,int n,int M) {
if (n==0)
return 1;
if (n%2!=0)
return (a * binpow(a,n-1,M))%M;
int z=binpow(a,n/2,M);
return (z*z)%M;
}
const ll INF = 1e18+7;
const int N = 1e5+7;
const int M = 1e4+7;
const ld eps = 1e-3;
void encode(int n,int x) {
int sz=0;
for (int j=1;j<30;j++) {
int bit=(x>>j&1),i=0;
bool ok=true;
while (ok and i<11) {
ok=send(0);
sz++;
i++;
}
send(bit);
sz++;
}
}
pair <int,int> decode(int n) {
int k=1,ans=0,j=1,last=0;
while (k<30) {
int z=receive();
if ((last<i-1 and j==0) or j==11) {
ans+=(1<<k)*z;
k++;
last=i;
j=0;
} else if (z==0) {
j++;
} else {
j=0;
}
}
return {ans,ans+1};
}
/*
signed main() {
// file("jenga");
ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
int test = 1;
solve(3);
// cin >> test;
while (test--) {
// solve();
if (test)
cout << '\n';
}
return 0;
}
*/
Compilation message
communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:65:19: error: 'i' was not declared in this scope
65 | if ((last<i-1 and j==0) or j==11) {
| ^
