Submission #1697409


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
typedef pair<int,P> P1;
typedef pair<P,P> P2;
typedef pair<double,int>Q;
#define pu push
#define pb push_back
#define mp make_pair
#define eps 1e-7
#define INF 1000000000
#define mod 1000000007
#define fi first
#define sc second
#define rep(i,x) for(int i=0;i<x;i++)
#define repn(i,x) for(int i=1;i<=x;i++)
#define SORT(x) sort(x.begin(),x.end())
#define ERASE(x) x.erase(unique(x.begin(),x.end()),x.end())
#define POSL(x,v) (lower_bound(x.begin(),x.end(),v)-x.begin())
#define POSU(x,v) (upper_bound(x.begin(),x.end(),v)-x.begin())
int n,p[1000005],M[1000005],beg,sum;
ll ans=1;
int x[1000005];
int main(){
	cin>>n;
	rep(i,n) cin>>p[i];
	rep(i,n){
		int a = p[i]-i*2;
		if(a>=1) beg++,sum++;
		else break;
	}
	rep(i,n){
		ans = ans*1LL*(beg==n?sum:(1+sum))%mod;
		while(beg<n && p[beg]-(beg-i-1)*2 >=1){
			beg++; sum++;
		}
		sum--;
	}
	cout<<ans<<endl;
}

Submission Info

Submission Time
Task A - Robot Racing
User IH19980412
Language C++14 (GCC 5.4.1)
Score 900
Code Size 990 Byte
Status AC
Exec Time 57 ms
Memory 6400 KB

Judge Result

Set Name Sample Subtask All
Score / Max Score 0 / 0 500 / 500 400 / 400
Status
AC × 4
AC × 14
AC × 28
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt
Subtask 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 2_00.txt, 2_01.txt, 2_02.txt, 2_03.txt, 2_04.txt, 2_05.txt, 2_06.txt, 2_07.txt, 2_08.txt, 2_09.txt, 2_10.txt, 2_11.txt, 2_12.txt
Case Name Status Exec Time Memory
0_00.txt AC 2 ms 4352 KB
0_01.txt AC 2 ms 4352 KB
0_02.txt AC 2 ms 4352 KB
0_03.txt AC 2 ms 4352 KB
1_00.txt AC 2 ms 4352 KB
1_01.txt AC 2 ms 4352 KB
1_02.txt AC 2 ms 4352 KB
1_03.txt AC 2 ms 4352 KB
1_04.txt AC 2 ms 4352 KB
1_05.txt AC 2 ms 4352 KB
1_06.txt AC 2 ms 4352 KB
1_07.txt AC 2 ms 4352 KB
1_08.txt AC 2 ms 4352 KB
1_09.txt AC 2 ms 4352 KB
1_10.txt AC 2 ms 4352 KB
2_00.txt AC 38 ms 6400 KB
2_01.txt AC 41 ms 6400 KB
2_02.txt AC 57 ms 6400 KB
2_03.txt AC 39 ms 6400 KB
2_04.txt AC 39 ms 6400 KB
2_05.txt AC 40 ms 6400 KB
2_06.txt AC 40 ms 6400 KB
2_07.txt AC 40 ms 6400 KB
2_08.txt AC 40 ms 6400 KB
2_09.txt AC 40 ms 6400 KB
2_10.txt AC 40 ms 6400 KB
2_11.txt AC 53 ms 6400 KB
2_12.txt AC 54 ms 6400 KB