Submission #301737

#	Time	Username	Problem	Language	Result	Execution time	Memory
301737		CSQ31	Boat (APIO16_boat)	C++14	9 / 100	2 ms	512 KiB

boat

#pragma GCC optimize("Ofast") 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) a.size()
#define all(a) a.begin(),a.end()
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define MOD (ll)(1e9+7)
#define INF (ll)(1e18)
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll a,ll b){if(!b)return a;else return gcd(b,a%b);}
ll a[550];
ll b[550];
ll dp[550];
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)cin>>a[i]>>b[i];
	for(int i=1;i<=n;i++)dp[i] = 1;
	ll ans = 0;
	for(int i=1;i<=n;i++){
		for(int j=1;j<i;j++){
			if(a[i] > a[j]){
				dp[i]+=dp[j];
				dp[i]%=MOD;
			}
		}
		ans+=dp[i];
		ans%=MOD;
	}
	cout<<ans;
}

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