Submission #593145

#	Time	Username	Problem	Language	Result	Execution time	Memory
593145		ioi	Sandcastle 2 (JOI22_ho_t5)	C++14	9 / 100	7 ms	852 KiB

Main

#include<bits/stdc++.h>

using namespace std;

#define debug(x) cout << '[' << #x << " is: " << x << "] " << endl;
#define inF freopen("cardgame.in" , "r" , stdin);
#define outF freopen("cardgame.out" , "w" , stdout);
#define imod(a , n) (a % n + n ) % n
#define sor(v) sort(v.begin() , v.end());
#define print(v) for(auto f : v ) cout << f << " " ;
#define rsor(v) sort(v.rbegin() , v.rend());
#define rev(v) reverse(v.begin() , v.end());
#define scan(v)for(auto &it : v)cin >> it ;
#define ll long long

#define logar(x , y) log(x) / log(y)
#define __sum(n) n * (n + 1) / 2
#define __lcm(a , b) a / __gcd(a , b) * b
#define pii pair<int , int >
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);

//#define int ll

const int N =  3e5 + 3,  M = N * 4  , MX = 2e4 + 40;
const ll MOD = 998244353  , oo = 1e9 + 9 , OO = 1e18 , mod = MOD ;
const double pi = acos(-1) , eps = 1e-17 ;

int di[] = {1 , -1 , 0 , 0};
int dj[] = {0 , 0 , 1 , -1};





 int32_t main()
{
    // inF;
   // inF;outF;
    fastio;

    //Welcome back without <TAWJIHI>


    int n , m ;
    cin >> n >> m ;


    ll past = 1e8 , cnt = 0;

    ll ans = 0 ;
    int arr[n][m];

    for(int i = 0 ; i < n ; i ++){
        for(int j = 0 ; j < m ; j ++)cin >> arr[i][j];

    }


    for(int i = 0 ; i < m ; i ++){
        if(arr[0][i] < past)cnt ++ ;
        else ans += cnt * (cnt + 1) / 2 , cnt = 1 ;

        past = arr[0][i];

    }
    ans += cnt * (cnt + 1) / 2 ;


    past = 1e8 , cnt = 0 ;

    for(int i = m - 1 ; i >= 0 ; i --){

        if(arr[0][i] < past)cnt ++ ;
        else ans += cnt * (cnt + 1) / 2 - cnt , cnt = 1 ;

       past = arr[0][i];


    }
    ans += cnt * (cnt + 1) / 2 - cnt ;



    cout << ans ;



}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 5
• Subtask 4: 0 / 56
• Subtask 5: 0 / 20