Submission #914177

#	Time	Username	Problem	Language	Result	Execution time	Memory
914177		Litusiano	Airplane (NOI23_airplane)	C++17	0 / 100	34 ms	6740 KiB

Main

#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math,inline")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,lzcnt,mmx,abm,avx,avx2,fma")
#include<bits/stdc++.h>
using namespace std;
#define int long long

int n,m;

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin>>n>>m;
	vector<vector<int>> G;
	vector<int> v(n); for(int& i : v) cin>>i;
	int trash;
	while(m--) cin>>trash>>trash;
	vector<int> suf(n+1); suf[n] = 0;	
	for(int i = n-1; i>=0 ; i--) suf[i] = max(v[i], suf[i+1]);
	int h = 0;
	int ans = 0;
	for(int i = 0; i<n; i++){
		if(v[i] > h){
			ans += v[i]-h; h = v[i]; // just go up
		}
		else if(h < suf[i]) h++;
		else if(h > suf[i]) h--;
	}
	cout<<ans+n<<endl;
}

• Subtask 1: 0 / 22
• Subtask 2: 0 / 10
• Subtask 3: 0 / 31
• Subtask 4: 0 / 37