Submission #6686377


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//#pragma GCC optimize("O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
//#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;


int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n;
    cin >> n;
    vector<int> h(n);
    for (int i = 0; i < n; i++) {
        cin >> h[i];
        if (i == 0 || h[i] - 1 >= h[i - 1]) {
            h[i]--;
        }
    }
    for (int i = 0; i + 1 < n; i++) {
        if (h[i] > h[i + 1]) {
            cout << "No\n";
            return 0;
        }
    }
    cout << "Yes\n";
    return 0;
}

Submission Info

Submission Time
Task C - Build Stairs
User meatrow
Language C++14 (GCC 5.4.1)
Score 300
Code Size 719 Byte
Status AC
Exec Time 12 ms
Memory 640 KB

Judge Result

Set Name All Sample
Score / Max Score 300 / 300 0 / 0
Status
AC × 17
AC × 4
Set Name Test Cases
All sample_01, sample_02, sample_03, sample_04, testcase_01, testcase_02, testcase_03, testcase_04, testcase_05, testcase_06, testcase_07, testcase_08, testcase_09, testcase_10, testcase_11, testcase_12, testcase_13
Sample sample_01, sample_02, sample_03, sample_04
Case Name Status Exec Time Memory
sample_01 AC 1 ms 256 KB
sample_02 AC 1 ms 256 KB
sample_03 AC 1 ms 256 KB
sample_04 AC 1 ms 256 KB
testcase_01 AC 7 ms 512 KB
testcase_02 AC 11 ms 640 KB
testcase_03 AC 11 ms 640 KB
testcase_04 AC 12 ms 640 KB
testcase_05 AC 4 ms 384 KB
testcase_06 AC 6 ms 384 KB
testcase_07 AC 12 ms 640 KB
testcase_08 AC 9 ms 640 KB
testcase_09 AC 9 ms 640 KB
testcase_10 AC 11 ms 640 KB
testcase_11 AC 11 ms 640 KB
testcase_12 AC 1 ms 256 KB
testcase_13 AC 12 ms 640 KB