Submission #1279434

#	Time	Username	Problem	Language	Result	Execution time	Memory
1279434		hssaan_arif	Airplane (NOI23_airplane)	C++20	0 / 100	31 ms	2004 KiB

Main

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

#define endl "\n"
#define pb push_back
#define int long long

const int N = 3e5 + 5, M = 1e9 + 7, LG = 20;

int n , u , v , A[N] , m;

void solve(){
    cin >> n >> m;
    int ans = 0 , cr = 0 , mx = 0;
    for (int i = 1 ; i <= n ; i++){
        cin >> A[i];
    }
    for (int i = 2 ; i <= n ; i++){
        if (A[i] <= cr){
            ans++;
            continue;
        }else{
            ans += (A[i] - cr);
            cr = A[i];
        }
    }
    for (int i = n-1 ; i >= 1 ; i--){
        if (A[i] > mx){
            cr--;
            mx = A[i];
        }
    }
    ans += (max((int)0 , cr));
    for (int i = 1 ; i <= m ; i++){
        cin >> u >> v;
    }
    cout << ans << endl;
}

signed main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int ts = 1;
    // cin >> ts;
    while(ts--){
        solve();
    }
}

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