Submission #382825

#	Time	Username	Problem	Language	Result	Execution time	Memory
382825		Slavita	Po (COCI21_po)	C++14	30 / 70	19 ms	1132 KiB

Main

#include <bits/stdc++.h>
#define ve vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pi pair<int,int>
#define all(v) v.begin(),v.end()
#define si(v) (int)v.size()
#define en '\n'
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

const int N = 1e5 + 228;
const int big = 1e9;
int n, n2, a[N], b[N];

int main(){
    iostream::sync_with_stdio(false); cin.tie(0); ios_base::sync_with_stdio(false); cout.tie(0);
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    cin >> n;
    n2 = 0;
    b[0] = -9999999;
    for (int i = 1; i <= n; i++) {cin >> b[i]; if (b[i] != b[i - 1]) {n2++; a[n2] = b[i];}}
    int kol = 0, kol2 = 0;
    a[0] = 0;
    for (int i = 1; i <= n2; i++){
        if (a[i] < a[i - 1] && a[i] < a[i + 1]) {i++; kol += 2; continue;}
        if (a[i] < a[i - 1]) kol++;
    }
    for (int i = 0; i <= n2; i++){
        if (a[i] > a[i + 1]) kol2++;
    }
    cout << max(kol, kol2);
    return 0;
}

• Subtask 1: 30 / 70