Submission #1038191

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1038191	2024-07-29 14:13:03	hotboy2703	Building 4 (JOI20_building4)	C++17	11 / 100	45 ms	21852 KiB

building4

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#include<bits/stdc++.h>
using ll = long long;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL << (i))
const ll MAXN = 5e5+100;
ll A[MAXN][2];
bool ans[MAXN];
ll n;
int main(){
  ios_base::sync_with_stdio(0);cin.tie(nullptr);
  cin>>n;
  n*=2;
  for (ll i = 1;i <= n;i ++)cin>>A[i][0];
  for (ll i = 1;i <= n;i ++)cin>>A[i][1];
  ll last = -1;
  for (ll i = 1;i <= n;i ++){
    bool sw = 0;
    if (A[i][0] > A[i][1]){
      swap(A[i][0],A[i][1]);
      sw = 1;
    }
    if (max(A[i][0],A[i][1]) < last){
      cout<<-1<<endl;
      return 0;
 
 
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• Subtask 1: 11 / 11
• Subtask 2: 0 / 89