Submission #983177

#	Time	Username	Problem	Language	Result	Execution time	Memory
983177		Aiperiii	Boat (APIO16_boat)	C++14	9 / 100	1 ms	452 KiB

boat

#include <bits/stdc++.h>
#define int long long
#define ull unsigned long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
const int mod=1e9+7;

signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    vector <int> a(n+1),b(n+1),dp(n+1);
    for(int i=1;i<=n;i++)cin>>a[i]>>b[i];
    dp[0]=1;
    for(int i=1;i<=n;i++){
        for(int j=0;j<i;j++){
            if(a[j]<a[i]){
                dp[i]+=dp[j];
                dp[i]%=mod;
            }
        }
    }
    int ans=0;
    for(int i=1;i<=n;i++){
        ans+=dp[i];
        ans%=mod;
    }
    cout<<ans<<"\n";
}
/*
3
3 3
5 5
2 2
 
*/
 

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