Submission #1097668

#	Time	Username	Problem	Language	Result	Execution time	Memory
1097668		TrinhKhanhDung	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	18 ms	3204 KiB

Main

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define sz(x) (int)x.size()
#define ALL(v) v.begin(),v.end()
#define MASK(k) (1LL << (k))
#define BIT(x, i) (((x) >> (i)) & 1)
#define oo (ll)1e18
#define INF (ll)1e9
#define MOD (ll)(1e9 + 7)

using namespace std;

template<class T1, class T2>
    bool maximize(T1 &a, T2 b){if(a < b){a = b; return true;} return false;}

template<class T1, class T2>
    bool minimize(T1 &a, T2 b){if(a > b){a = b; return true;} return false;}

template<class T1, class T2>
    void add(T1 &a, T2 b){a += b; if(a >= MOD) a -= MOD;}

template<class T1, class T2>
    void sub(T1 &a, T2 b){a -= b; if(a < 0) a += MOD;}

template<class T>
    void cps(T &v){sort(ALL(v)); v.resize(unique(ALL(v)) - v.begin());}

const int MAX = 2e5 + 10;

int N;
int a[MAX];

void solve(){
    cin >> N;
    for(int i = 1; i <= N; i++){
        cin >> a[i];
    }

    ll L = 0, R = 0;
    for(int i = 1; i < N; i++){
        if(a[i] <= a[i + 1]) R += a[i + 1] - a[i] + 1;
    }

    ll ans = oo;
    for(int i = 1; i <= N; i++){
        minimize(ans, max(L, R));
//        cout << i << ' ' << L << ' ' << R << '\n';
        if(a[i] >= a[i + 1]) L += a[i] - a[i + 1] + 1;
        if(a[i] <= a[i + 1]) R -= a[i + 1] - a[i] + 1;
    }

    cout << ans << '\n';
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
//     freopen("CAU3.inp","r",stdin);
//     freopen("CAU3.out","w",stdout);

    int t = 1;
//    cin >> t;
    while(t--){
        solve();
    }

    return 0;
}

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60