제출 #1292565

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1292565		goulthen	Boat (APIO16_boat)	C++20	9 / 100	2 ms	656 KiB

boat

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define ll long long
#define pii pair<int, int>
#define fi first
#define se second
#define rep(i, a, b) for (int i = a; i <= b; ++i)
#define per(i, b, a) for (int i = b; i >= a; --i)
#define pb push_back
#define all(v) (v).begin(), (v).end()

const int MAXN = 5e2+10;
const int MOD = 1e9+7;
int l[MAXN], r[MAXN], dp[MAXN];

int32_t main() {
    ios_base::sync_with_stdio(0);cin.tie(nullptr);
    int n;cin >> n;
    rep(i,1,n) cin >> l[i] >> r[i];

    int ans = 0LL;
    rep(i,1,n) {
        dp[i] = 1;
        per(j,i-1,1) {
            if(l[i] > l[j]) dp[i] = (dp[i]+dp[j])%MOD;
        }
        ans = (ans+dp[i])%MOD;
    }
    cout << ans << '\n';

}

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