oj.uz

Submission #394098

# Submission time Handle Problem Language Result Execution time Memory
394098 2021-04-25T14:41:15 Z jeqcho Boat (APIO16_boat) C++17
0 / 100
 23 ms 8224 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pair<int,int>> vpi;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define rsz resize
#define sz(x) int(x.size())
#define all(x) begin(x), end(x)
#define fi first
#define se second

int const N=5e2+3;
int const A=1e3+3;
int a[N],b[N];
map<int,ll> dp[N];
ll mod =1e9+7;
set<int> vis[N];
int n;


int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin>>n;
	F0R(i,n)
	{
		cin>>a[i]>>b[i];
	}
	dp[0][0]=1;
	F0R(i,n)
	{
		trav(e,dp[i])
		{
			dp[i+1][e.fi]=e.se;
			if(e.fi < a[i])
			{
				dp[i+1][a[i]]+=e.se;
				dp[i+1][a[i]]%=mod;
			}
		}
	}
	ll ans = 0;
	trav(e,dp[n])
	{
		ans+=e.se;
		ans%=mod;
	}
	cout<<ans<<'\n';
	return 0;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 8224 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 8224 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 588 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 8224 KB Output isn't correct
2 Halted 0 ms 0 KB -