//Never stop trying
#include "bits/stdc++.h"
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
typedef long long ll;
typedef string str;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
const int MOD = 1e9 + 7; //998244353
const ll INF = 1e18;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up
template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
//constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
//mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
ll random(ll a, ll b){
return a + rng() % (b - a + 1);
}
#ifndef LOCAL
#define cerr if(false) cerr
#endif
#define dbg(x) cerr << #x << " : " << x << endl;
#define dbgs(x,y) cerr << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << #v << " : " << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;
#define here() cerr << "here" << endl;
void IO() {
#ifdef LOCAL
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}
/////////////////////////ONLY CLEAN CODES ALLOWED/////////////////////////
#define Send send
#ifndef LOCAL
#include "Anna.h"
#endif
#ifdef LOCAL
void Send(int a){
return;
}
#endif
void Anna(int N, V<char> S) {
FOR(i,0,N){
if(S[i]=='X') send(0),send(0);
else if(S[i]=='Y') send(0),send(1);
else send(1),send(0);
}
}
#ifdef LOCAL
int main() {
boost; IO();
return 0;
}
#endif
//Change your approach
//Never stop trying
#include "bits/stdc++.h"
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
typedef long long ll;
typedef string str;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
const int MOD = 1e9 + 7; //998244353
const ll INF = 1e18;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up
template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
//constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
//mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
ll random(ll a, ll b){
return a + rng() % (b - a + 1);
}
#ifndef LOCAL
#define cerr if(false) cerr
#endif
#define dbg(x) cerr << #x << " : " << x << endl;
#define dbgs(x,y) cerr << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << #v << " : " << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;
#define here() cerr << "here" << endl;
void IO() {
#ifdef LOCAL
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}
/////////////////////////ONLY CLEAN CODES ALLOWED/////////////////////////
#define Remove rmv
#ifndef LOCAL
#include "Bruno.h"
#endif
#ifdef LOCAL
set<int>s;
vi a(MX);
int ans=0;
void Remove(int idx){
auto i=s.find(idx);
int y=(a[*i]==1);
if(i!=s.begin()){
i--;
if(a[*i]!=0) y=0;
i++;
i++;
if(i==s.end()) y=0;
else if(a[*i]!=2) y=0;
i--;
}
else y=0;
ans+=y;
s.erase(i);
}
#endif
void Bruno(int N, int L, vi A) {
vi vec;
for(int i=0; i<L; i+=2){
vec.pb(A[i]*2+A[i+1]);
}
vi st;
FOR(i,0,N){
if(vec[i]==0){
st.pb(i);
}
else if(vec[i]==2){
rmv(i);
}
else{
if(!sz(st))
rmv(i);
else{
int j=i+1;
while(j<N && vec[j]!=2){
rmv(j);
j++;
}
rmv(i);
i=j-1;
}
}
}
while(sz(st)){
rmv(st.back());
st.pop_back();
}
}
#ifdef LOCAL
int main() {
boost; IO();
int N; cin>>N;
FOR(i,0,N) s.insert(i);
vi vec;
FOR(i,0,N){
int x; cin>>x;
int y; cin>>y;
vec.pb(x);
vec.pb(y);
a[i]=x*2+y;
}
Bruno(N,sz(vec),vec);
cout << ans << endl;
return 0;
}
#endif
//Change your approach
Compilation message
/usr/bin/ld: /tmp/ccnbzqtW.o: in function `Anna(int, std::vector<char, std::allocator<char> >)':
Anna.cpp:(.text+0x56): undefined reference to `send(int)'
/usr/bin/ld: Anna.cpp:(.text+0x5d): undefined reference to `send(int)'
/usr/bin/ld: Anna.cpp:(.text+0x81): undefined reference to `send(int)'
/usr/bin/ld: Anna.cpp:(.text+0x8b): undefined reference to `send(int)'
/usr/bin/ld: Anna.cpp:(.text+0xa3): undefined reference to `send(int)'
/usr/bin/ld: /tmp/ccnbzqtW.o:Anna.cpp:(.text+0xaa): more undefined references to `send(int)' follow
collect2: error: ld returned 1 exit status
/usr/bin/ld: /tmp/cc76YGgG.o: in function `Bruno(int, int, std::vector<int, std::allocator<int> >)':
Bruno.cpp:(.text+0x1e9): undefined reference to `rmv(int)'
/usr/bin/ld: Bruno.cpp:(.text+0x267): undefined reference to `rmv(int)'
/usr/bin/ld: Bruno.cpp:(.text+0x2f6): undefined reference to `rmv(int)'
/usr/bin/ld: Bruno.cpp:(.text+0x319): undefined reference to `rmv(int)'
collect2: error: ld returned 1 exit status
