Submission #978537

#	Time	Username	Problem	Language	Result	Execution time	Memory
978537		IUA_Hasin	Boat (APIO16_boat)	C++17	9 / 100	1 ms	604 KiB

boat

#include <bits/stdc++.h>

#define endl                                "\n"
#define ll                                  long long

using namespace std;

const ll mod = 1e9+7;

int main(){
    ll n;
    cin>>n;
    ll arr[n];
    ll brr[n];
    for(int i=0; i<n; i++){
        cin>>arr[i];
        cin>>brr[i];
    }

    ll dp[n];
    dp[n-1] = 1;

    for(int i=n-2; i>=0; i--){
        ll a = arr[i];
        // cout << a << " " << 25 << endl;
        ll sum = 0;
        for(int j=i+1; j<n; j++){
            if(arr[j]>a){
                sum = (sum+dp[j])%mod;
                // cout << arr[j] << " " << 30 << endl;
            }
        }
        dp[i] = sum+1;
    }

    ll ans = 0;

    for(int i=0; i<n; i++){
        // cout << dp[i] << " ";
        ans = (ans+dp[i])%mod;
        ans = ans%mod;
    }
    // cout<<endl;

    cout << ans%mod << endl;



    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 27
• Subtask 4: 0 / 42