Submission #971408

#	Time	Username	Problem	Language	Result	Execution time	Memory
971408		LCJLY	Passport (JOI23_passport)	C++14	16 / 100	2 ms	1368 KiB

passport

#include <bits/stdc++.h>
using namespace std;
	
#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<long long,long long>pii;
typedef pair<int,pii>pi2;
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());

pii arr[305];
int n;
int memo[305][305];

int dp(int l, int r){
	if(l==1&&r==n) return 0;
	if(memo[l][r]!=-1) return memo[l][r];
	int ans=1e15;
	for(int x=l;x<=r;x++){
		if(arr[x].first<l||arr[x].second>r){
			ans=min(ans,dp(min(l,arr[x].first),max(r,arr[x].second))+1);
		}
	}
	return memo[l][r]=ans;
}

void solve(){
	cin >> n;
	for(int x=1;x<=n;x++){
		cin >> arr[x].first >> arr[x].second;
	}
	
	int q;
	cin >> q;
	int temp;
	memset(memo,-1,sizeof(memo));
	for(int x=0;x<q;x++){
		cin >> temp;
		int hold=dp(arr[temp].first,arr[temp].second);
		if(hold>1e12){
			cout << -1 << "\n";
		}
		else cout << hold+1 << "\n";
	}
}
 
int32_t main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
	//freopen("in.txt","r",stdin);
	//cin >> t;
	while(t--){
		solve();
	}
}

• Subtask 1: 0 / 6
• Subtask 2: 16 / 16
• Subtask 3: 0 / 24
• Subtask 4: 0 / 8
• Subtask 5: 0 / 46