Go: package main

import "fmt"

func main() {
	var sTime, fTime, exists, eSTime, eFTime int

	fmt.Scan(&sTime, &fTime)
	fmt.Scan(&exists)

	var flag bool

	for i := 0; i < exists; i++ {
		fmt.Scan(&eSTime, &eFTime)

		if sTime > eSTime && sTime < eFTime {
			flag = true
		}
		if fTime > eSTime && fTime < eFTime {
			flag = true
		}
		if eSTime > sTime && eFTime < fTime {
			flag = true
		}
	}

	if flag {
		fmt.Println(1)
	} else {package main

import "fmt"

func main() {
	var sTime, fTime, exists, eSTime, eFTime int

	fmt.Scan(&sTime, &fTime)
	fmt.Scan(&exists)

	var flag bool

	for i := 0; i < exists; i++ {
		fmt.Scan(&eSTime, &eFTime)

		if sTime > eSTime && sTime < eFTime {
			flag = true
		}
		if fTime > eSTime && fTime < eFTime {
			flag = true
		}
		if eSTime > sTime && eFTime < fTime {
			flag = true
		}
	}

	if flag {
		fmt.Println(1)
	} else {
		fmt.Println(0)
	}
}

		fmt.Println(0)
	}
}

C++: #include <iostream>
using namespace std;
int main(){
  int a,b,n,s,f,i=0;
  cin >> a >> b >> n;
  while(1){
    cin >> s >> f;
    if((a == s && b == f) || (s > a && s < b) || (f > a && f < b)){
      cout << '1' << endl;
      break;
    }
    if(++i == n){
      cout << '0' << endl;
      break;
    }
  }
}

C++: #include<iostream>
using namespace std ;
int main()
{
	int a=0 , b=0 , N=0 , s=0 , f=0 , A=0 ;
	cin >> a >> b >> N ;
	for(int i=0;i<N;i++)
	{
		cin >> s >> f ;
		if(a<s&&s<b) A=1 ;

		if(s<a&&a<f&&s<b&&b<f) A=1 ;

		if(a<f&&f<b) A=1 ;
	}
	cout << A << endl ;
	return 0 ;
}

C++: #include<iostream>
using namespace std;

int main(){
  bool flag = false;
  int start,stop;
  cin >> start >> stop;
  int num;
  cin >> num;
  int book_start,book_stop;
  for(int i=0;i<num;i++){
    cin >> book_start >> book_stop;
    if(start>=book_start && start<book_stop){
      flag = true;
    }
    if(stop>book_start && stop<=book_stop){
      flag = true;
    }
    if(start<=book_start&&stop>=book_stop){
      flag = true;
    }
  }

  cout << flag << endl;

}

C++: #include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<P,int> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-8;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

const int M=1005;
bool a[M];
int n,l,r;

int main(){
	cin>>l>>r>>n;
	for(int i=0;i<n;i++){
		int L,R;
		cin>>L>>R;
		while(L<R) a[L++]=1;
	}
	while(l<r){
		if(a[l]){
			cout<<1<<endl;
			return 1;
		}
		l++;
	}
	cout<<0<<endl;
}

C++: #include <iostream>
#include <string>
#include <algorithm>
#define rep(i,n) for(int i=0;i<n;++i)

using namespace std;
int n, m, o, a, b, ans = 0;
int main() {
	cin >> n >> m >> o;
	rep(i, o) {
		cin >> a >> b;
		if (n > a&&n < b) ans = 1;
		if (m > a&&m < b) ans = 1;
		if (n < a&&m > b) ans = 1;
	}

	cout << ans << endl;
	return 0;
}

C++: #include <iostream>
#include <vector>
using namespace std;

int main() {
	int a, b, N;
	cin >> a >> b;
	cin >> N;
	vector<int> s(N);
	vector<int> f(N);
	for (int i = 0; i < N; i++)
		cin >> s.at(i) >> f.at(i);

	for (int i = 0; i < N; i++){
		if (a < s.at(i) && s.at(i) < b&&a < f.at(i) && f.at(i) < b||a==s.at(i)&&b==f.at(i)){
			cout << '1' << endl;
			break;
		}
		if (i == N - 1)
			cout << '0' << endl;
	}
}

C++: 
#include<cstdio>
#include<iostream>
#include<algorithm>
#include<string>
#include<cstring>
#include<queue>
#include<vector>
#include<functional>
#include<cmath>
#include<map>
#include<stack>
#include<set>
#include<numeric>
#include<limits>
#include<iomanip>
#include<iterator>

#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define rep(i,n) for(int i=0; i<n; i++)
#define FOR(i,a,n) for(int i=a; i<n; i++)

using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<ll, char> plc;

int main()
{
	int a, b,n;
	cin >> a >> b >> n;

	bool ans = true;
	rep(i, n) {
		int s, f;
		cin >> s >> f;
		if ((a <= s && s < b) || (s <= a && f >= b))ans = false;
	}
	if (ans)cout << 0 << endl;
	else cout << 1 << endl;
	return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
    int a, b, N;
    cin >> a;
    cin >> b;
    cin >> N;

    int s[N], f[N];

    for (int i=0; i<N; ++i)
    {
        cin >> s[i];
        cin >> f[i];
    }
    
    for (int i=0; i<N; ++i)
    {
        if (s[i] <= a && a < f[i])
        {
            cout << 1 << endl;
            return 0;
        }

        if (s[i] < b && b <= f[i])
        {
            cout << 1 << endl;
            return 0;
        }
    }

    cout << 0 << endl;
}

C++: #include<iostream>
#include<cassert>
using namespace std;

bool overlap(int a, int b, int c, int d){
  assert( a < b ); assert( c < d );
  if ( d <= a ) return false;
  if ( b <= c ) return false;
  return true;
}

bool notOverlap(int a, int b, int c, int d){
  return b <= c || d <=a;
}

main(){
  int a, b, s, f, n;
  cin >> a >> b >> n;
  for ( int i = 0; i < n; i++ ){
    cin >> s >> f;
    if ( overlap(a, b, s, f) ){
      cout << 1 << endl;
      return 0;
    } else {
      assert(notOverlap(a, b, s, f));
    }
  }
  cout << 0 << endl;
  return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
#define ll long long 
int main(){
    int a,b,n;
    cin >>a >>b >>n;
    vector<vector<int>> vec(n,vector<int>(2));
    for(int i=0;i<n;i++){
        cin>>vec.at(i).at(0)>>vec.at(i).at(1);
    }
    vector<int> cat(1000,0);
    for(int i=0;i<n;i++){
        cat.at(vec.at(i).at(0)-1) ++;
        cat.at(vec.at(i).at(1)-1) --;
    }
    cat.at(a-1) ++;
    cat.at(b-1) --;
    vector<int> rsw(1001);
    rsw.at(0) =0;
    for(int i=1;i<1001;i++){
        rsw.at(i) = rsw.at(i-1) + cat.at(i-1);
    }
    for(int i=0;i<1001;i++){
        if(rsw.at(i) == 2){
            cout << 1 << endl;
            break;
        }else if(i==1000){
            cout << 0 << endl;
        }
    }


}

C++: #include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n) FOR(i,0,n)
#define repr(i,n) for(int i=(n)-1;0<=i;--i)
#define each(e,v) for(auto&& e:(v))
#define all(v) begin(v),end(v)
#define dump(x) cerr<<#x<<": "<<(x)<<endl
#define INF 100000000
#define IINF 9999999999999;
using vint = vector<int>;
using ll = long long;
using vll = vector<ll>;
template <class T> void chmin(T& a, const T& b) { a = min(a, b); }
template <class T> void chmax(T& a, const T& b) { a = max(a, b); }

// 1

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    int a, b;
    cin >> a >> b;
    int N;
    cin >> N;
    int temp1, temp2;
    bool reservation[1001] = {false};
    rep(i, N) {
        cin >> temp1 >> temp2;
        for(int j = temp1; j <= temp2; ++j) {
            reservation[temp1] = true;
        }
    }
    int ans = 0;
    for(int i = a; i <= b; ++i) {
        if(reservation[a]) ans = 1;
    }

    cout << ans << endl;
}

C++: #include<iostream>
using namespace std;
int main(){
	int a,b,N,s[105],f[105];
	cin >> a>>b>>N;
	for (int i = 0; i < N; i++){
		cin >> s[i] >> f[i];
		if (f[i]>a&&s[i]<b){
			cout << 1; break;
		}
		cout << 0;
	} 
	return 0;
}

C++: #include <iostream>
using namespace std;

int main(){
    int a,b,n;
    cin >> a>> b >> n;
    int ans=0;
    for(int i=0; i<n; i++){
        int s,f;
        cin >> s >> f;
        if((a<s && s<b) || (s<=a && a<f)){
            ans=1;
        }
    }
    cout << ans << endl;
    return 0;
}