Submission #65886068

Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int read(){int f=0,x=0;char a=getchar();while(!isdigit(a)){if(a=='-')f=1;a=getchar();}while(isdigit(a)){x=x*10+a-'0';a=getchar();}if(f)return -x;return x;}
int n,p[300007],w[300007];
int da,xn,pa,pn;
int main()
{
    //freopen(in.in,r,stdin);
    //freopen(out.out,w,stdout);
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>p[i];
        if(p[i]>p[i-1]&&i!=1)
        {
            w[i]=w[i-1]+1;
        }
        else w[i]=w[i-1];
    }
    long long ans=0;
    for(int i=2;i<=n;i++)
    {
        if(da&&xn)
        {
            ans+=w[min(da,xn)]-w[max(pa,pn)];
        }
        if(p[i-1]<p[i]&&p[i]>p[i+1])
        {
            if(da)pa=da;
            da=i;
        }
        if(p[i-1]>p[i]&&p[i]<p[i+1])
        {
            if(xn)pn=xn;
            xn=i;
        }
    }
    cout<<ans;
    return 0;
}

Submission Info

Submission Time
Task C - ~
User evilwater
Language C++ 20 (gcc 12.2)
Score 350
Code Size 957 Byte
Status AC
Exec Time 18 ms
Memory 5980 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 350 / 350
Status
AC × 3
AC × 38
Set Name Test Cases
Sample sample00.txt, sample01.txt, sample02.txt
All sample00.txt, sample01.txt, sample02.txt, testcase00.txt, testcase01.txt, testcase02.txt, testcase03.txt, testcase04.txt, testcase05.txt, testcase06.txt, testcase07.txt, testcase08.txt, testcase09.txt, testcase10.txt, testcase11.txt, testcase12.txt, testcase13.txt, testcase14.txt, testcase15.txt, testcase16.txt, testcase17.txt, testcase18.txt, testcase19.txt, testcase20.txt, testcase21.txt, testcase22.txt, testcase23.txt, testcase24.txt, testcase25.txt, testcase26.txt, testcase27.txt, testcase28.txt, testcase29.txt, testcase30.txt, testcase31.txt, testcase32.txt, testcase33.txt, testcase34.txt
Case Name Status Exec Time Memory
sample00.txt AC 1 ms 3640 KiB
sample01.txt AC 1 ms 3508 KiB
sample02.txt AC 1 ms 3452 KiB
testcase00.txt AC 4 ms 3916 KiB
testcase01.txt AC 18 ms 5856 KiB
testcase02.txt AC 3 ms 3728 KiB
testcase03.txt AC 18 ms 5900 KiB
testcase04.txt AC 16 ms 5596 KiB
testcase05.txt AC 18 ms 5844 KiB
testcase06.txt AC 12 ms 5124 KiB
testcase07.txt AC 17 ms 5824 KiB
testcase08.txt AC 1 ms 3420 KiB
testcase09.txt AC 1 ms 3448 KiB
testcase10.txt AC 5 ms 4232 KiB
testcase11.txt AC 15 ms 5868 KiB
testcase12.txt AC 11 ms 5036 KiB
testcase13.txt AC 15 ms 5904 KiB
testcase14.txt AC 14 ms 5860 KiB
testcase15.txt AC 7 ms 4632 KiB
testcase16.txt AC 13 ms 5900 KiB
testcase17.txt AC 6 ms 4508 KiB
testcase18.txt AC 13 ms 5864 KiB
testcase19.txt AC 4 ms 4004 KiB
testcase20.txt AC 14 ms 5836 KiB
testcase21.txt AC 6 ms 4380 KiB
testcase22.txt AC 14 ms 5904 KiB
testcase23.txt AC 8 ms 4764 KiB
testcase24.txt AC 13 ms 5804 KiB
testcase25.txt AC 7 ms 4748 KiB
testcase26.txt AC 13 ms 5980 KiB
testcase27.txt AC 4 ms 4144 KiB
testcase28.txt AC 14 ms 5848 KiB
testcase29.txt AC 6 ms 4440 KiB
testcase30.txt AC 14 ms 5868 KiB
testcase31.txt AC 3 ms 3812 KiB
testcase32.txt AC 13 ms 5852 KiB
testcase33.txt AC 6 ms 4452 KiB
testcase34.txt AC 13 ms 5744 KiB