Language: C++

0#include<bits/stdc++.h>
using namespace std;

#define endl '\n'
#define ALL(a)  (a).begin(),(a).end()
#define ALLR(a)  (a).rbegin(),(a).rend()
#define spa << " " <<
#define test cout<<"test"<<endl;
#define fi first
#define se second
#define MP make_pair
#define PB push_back
#define EB emplace_back
#define rep(i,n,m) for(ll i = n; i < (ll)(m); i++)
#define rrep(i,n,m) for(ll i = m - 1; i >= (ll)(n); i--)
using ll = long long;
using ld = long double;
const ll MOD = 1e9+7;
//const ll MOD = 998244353;
const ll INF = 1e18;
using P = pair<ll, ll>;
template<typename T>
void chmin(T &a,T b){if(a>b)a=b;}
template<typename T>
void chmax(T &a,T b){if(a<b)a=b;}
void pmod(ll &a,ll b){a=(a+b)%MOD;}
void pmod(ll &a,ll b,ll c){a=(b+c)%MOD;}
void qmod(ll &a,ll b){a=(a*b)%MOD;}
void qmod(ll &a,ll b,ll c){a=(b*c)%MOD;}
ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
template<typename T1,typename T2>
void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}  
template<typename T>
void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}};
void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
{for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}};
template<typename T>
void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;};
template<typename T>
vector<vector<T>>vec(ll x, ll y, T w){
  vector<vector<T>>v(x,vector<T>(y,w));return v;}
ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;}
vector<ll>dx={1,0,-1,0,1,1,-1,-1};
vector<ll>dy={0,1,0,-1,1,-1,1,-1};
template<typename T>
vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
template<typename... Ts>
auto make_v(size_t a,Ts... ts){
  return vector<decltype(make_v(ts...))>(a,make_v(ts...));
}
template< int mod >
struct ModInt {
  int x;

  ModInt() : x(0) {}

  ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}

  ModInt &operator+=(const ModInt &p) {
    if((x += p.x) >= mod) x -= mod;
    return *this;
  }

  ModInt &operator-=(const ModInt &p) {
    if((x += mod - p.x) >= mod) x -= mod;
    return *this;
  }

  ModInt &operator*=(const ModInt &p) {
    x = (int) (1LL * x * p.x % mod);
    return *this;
  }

  ModInt &operator/=(const ModInt &p) {
    *this *= p.inverse();
    return *this;
  }

  ModInt operator-() const { return ModInt(-x); }

  ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }

  ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }

  ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }

  ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }

  bool operator==(const ModInt &p) const { return x == p.x; }

  bool operator!=(const ModInt &p) const { return x != p.x; }

  ModInt inverse() const {
    int a = x, b = mod, u = 1, v = 0, t;
    while(b > 0) {
      t = a / b;
      swap(a -= t * b, b);
      swap(u -= t * v, v);
    }
    return ModInt(u);
  }

  ModInt pow(int64_t n) const {
    ModInt ret(1), mul(x);
    while(n > 0) {
      if(n & 1) ret *= mul;
      mul *= mul;
      n >>= 1;
    }
    return ret;
  }

  friend ostream &operator<<(ostream &os, const ModInt &p) {
    return os << p.x;
  }

  friend istream &operator>>(istream &is, ModInt &a) {
    int64_t t;
    is >> t;
    a = ModInt< mod >(t);
    return (is);
  }

  static int get_mod() { return mod; }
};
using modint = ModInt< MOD >;
int main(){
  cin.tie(nullptr);
  ios_base::sync_with_stdio(false);
  //cout<<fixed<<setprecision(10);
  ll res=0,buf=0;
  bool judge = true;
  ll n;cin>>n;
  vector<ll>t(n+1),a(n+1);
  rep(i,0,n)cin>>t[i+1];
  rep(i,0,n)cin>>a[i];
  modint ret=1;
  rep(i,0,n){
    if(t[i]>t[i+1])judge=false;
    if(a[i]<a[i+1])judge=false;
    buf=-1;
    if(t[i]!=t[i+1])buf=t[i+1];
    if(a[i]!=a[i+1]){
      if(buf!=-1&&buf!=a[i])judge=false;
      buf=a[i];
    }
    if(buf>t[i+1])judge=false;
    if(buf>a[i])judge=false;
    if(buf==-1)ret*=min(a[i],t[i+1]);

  }
  //cout<<t[n-1] spa a[1]<<endl;
  if(t[n-1]!=a[1])judge=false;
  if(!judge)cout<<0<<endl;
  else cout<<ret<<endl;
  return 0;
}

Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | 0#include<bits/stdc++.h>
      |  ^
a.cc:1:1: error: expected unqualified-id before numeric constant
    1 | 0#include<bits/stdc++.h>
      | ^
a.cc:21:11: error: 'pair' does not name a type
   21 | using P = pair<ll, ll>;
      |           ^~~~
a.cc: In function 'll median(ll, ll, ll)':
a.cc:30:41: error: 'max' was not declared in this scope
   30 | ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
      |                                         ^~~
a.cc:30:54: error: 'min' was not declared in this scope
   30 | ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
      |                                                      ^~~
a.cc: In function 'void ans1(bool)':
a.cc:31:25: error: 'cout' was not declared in this scope
   31 | void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
      |                         ^~~~
a.cc:31:48: error: 'cout' was not declared in this scope
   31 | void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
      |                                                ^~~~
a.cc: In function 'void ans2(bool)':
a.cc:32:25: error: 'cout' was not declared in this scope
   32 | void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
      |                         ^~~~
a.cc:32:48: error: 'cout' was not declared in this scope
   32 | void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
      |                                                ^~~~
a.cc: In function 'void ans3(bool)':
a.cc:33:25: error: 'cout' was not declared in this scope
   33 | void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
      |                         ^~~~
a.cc:33:49: error: 'cout' was not declared in this scope
   33 | void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
      |                                                 ^~~~
a.cc: In function 'void ans(bool, T1, T2)':
a.cc:35:33: error: 'cout' was not declared in this scope
   35 | void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}
      |                                 ^~~~
a.cc:35:52: error: 'cout' was not declared in this scope
   35 | void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}
      |                                                    ^~~~
a.cc: At global scope:
a.cc:37:6: error: variable or field 'debug' declared void
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |      ^~~~~
a.cc:37:12: error: 'vector' was not declared in this scope
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |            ^~~~~~
a.cc:37:19: error: 'vector' was not declared in this scope
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                   ^~~~~~
a.cc:37:27: error: expected primary-expression before '>>' token
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                           ^~
a.cc:37:30: error: 'v' was not declared in this scope
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                              ^
a.cc:37:35: error: expected primary-expression before 'h'
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                                   ^
a.cc:37:40: error: expected primary-expression before 'w'
   37 | void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                                        ^
a.cc:39:6: error: variable or field 'debug' declared void
   39 | void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |      ^~~~~
a.cc:39:12: error: 'vector' was not declared in this scope
   39 | void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |            ^~~~~~
a.cc:39:19: error: 'string' was not declared in this scope
   39 | void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                   ^~~~~~
a.cc:39:27: error: 'v' was not declared in this scope
   39 | void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                           ^
a.cc:39:32: error: expected primary-expression before 'h'
   39 | void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                                ^
a.cc:39:37: error: expected primary-expression before 'w'
   39 | void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
      |                                     ^
a.cc:42:6: error: variable or field 'debug' declared void
   42 | void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
      |      ^~~~~
a.cc:42:12: error: 'vector' was not declared in this scope
   42 | void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
      |            ^~~~~~
a.cc:42:20: error: expected primary-expression before '>' token
   42 | void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
      |                    ^
a.cc:42:22: error: 'v' was not declared in this scope
   42 | void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
      |                      ^
a.cc:42:27: error: expected primary-expression before 'n'
   42 | void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
      |                           ^
a.cc:45:1: error: 'vector' does not name a type
   45 | vector<vector<T>>vec(ll x, ll y, T w){
      | ^~~~~~
a.cc:48:1: error: 'vector' does not name a type
   48 | vector<ll>dx={1,0,-1,0,1,1,-1,-1};
      | ^~~~~~
a.cc:49:1: error: 'vector' does not name a type
   49 | vector<ll>dy={0,1,0,-1,1,-1,1,-1};
      | ^~~~~~
a.cc:51:1: error: 'vector' does not name a type
   51 | vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
      | ^~~~~~
a.cc:53:13: error: 'size_t' was not declared in this scope
   53 | auto make_v(size_t a,Ts... ts){
      |             ^~~~~~
a.cc:1:1: note: 'size_t' is defined in header '<cstddef>'; this is probably fixable by adding '#include <cstddef>'
  +++ |+#include <cstddef>
    1 | 0#include<bits/stdc++.h>
a.cc:53:24: error: expected primary-expression before '...' token
   53 | auto make_v(size_t a,Ts... ts){
      |                        ^~~
a.cc:53:30: error: expression list treated as compound expression in initializer [-fpermissive]
   53 | auto make_v(size_t a,Ts... ts){
      |                              ^
a.cc:53:31: error: expected ';' before '{' token
   53 | auto make_v(size_t a,Ts... ts){
      |                               ^
      |                               ;
a.cc:62:17: error: expected ')' before 'y'
   62 |   ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
      |         ~       ^~
      |                 )
a.cc:108:14: error: 'int64_t' has not been declared
  108 |   ModInt pow(int64_t n) const {
      |              ^~~~~~~
a.cc:118:10: error: 'ostream' does not name a type
  118 |   friend ostream &operator<<(ostream &os, const ModInt &p) {
      |          ^~~~~~~
a.cc:122:10: error: 'istream' does not name a type
  122 |   friend istream &operator>>(istream &is, ModInt &a) {
      |          ^~~~~~~
a.cc: In member function 'ModInt<mod> ModInt<mod>::inverse() const':
a.cc:102:7: error: there are no arguments to 'swap' that depend on a template parameter, so a declaration of 'swap' must be available [-fpermissive]
  102 |       swap(a -= t * b, b);
      |       ^~~~
a.cc:102:7: note: (if you use '-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
a.cc:103:7: error: there are no arguments to 'swap' that depend on a template parameter, so a declaration of 'swap' must be available [-fpermissive]
  103 |       swap(u -= t * v, v);
      |       ^~~~
a.cc: In function 'int main()':
a.cc:133:3: error: 'cin' was not declared in this scope
  133 |   cin.tie(nullptr);
      |   ^~~
a.cc:134:3: error: 'ios_base' has not been declared
  134 |   ios_base::sync_with_stdio(false);
      |   ^~~~~~~~
a.cc:139:3: error: 'vector' was not declared in this scope
  139 |   vector<ll>t(n+1),a(n+1);
      |   ^~~~~~
a.cc:139:12: error: expected primary-expression before '>' token
  139 |   vector<ll>t(n+1),a(n+1);
      |            ^
a.cc:139:13: error: 't' was not declared in this scope
  139 |   vector<ll>t(n+1),a(n+1);
      |             ^
a.cc:139:20: error: 'a' was not declared in this scope
  139 |   vector<ll>t(n+1),a(n+1);
      |                    ^
a.cc:142:14: error: conversion from 'int' to non-scalar type 'modint' {aka 'ModInt<1000000007>'} requested
  142 |   modint ret=1;
      |              ^
a.cc:154:21: error: 'min' was not declared in this scope; did you mean 'main'?
  154 |     if(buf==-1)ret*=min(a[i],t[i+1]);
      |                     ^~~
      |                     main
a.cc:159:13: error: 'cout' was not declared in this scope
  159 |   if(!judge)cout<<0<<endl;
      |             ^~~~
a.cc:160:8: error: 'cout' was not declared in this scope
  160 |   else cout<<ret<<endl;
      |        ^~~~