Submission #403895

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
403895	2021-05-13T14:43:31 Z	sad	Boat (APIO16_boat)	C++14	9 / 100	5 ms	1324 KB

boat

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
using namespace std;
int dp[503][503],a[503],b[503];
int n;const int mod=1e9+7;
int d(int x,int y)
{
    if(x==n)return 1;
    int &u=dp[x][y];
    if(u!=-1)return u;
    u=0;
    u+=d(x+1,y);
    if(a[x]>a[y])u+=d(x+1,x);
    u%=mod;
    return u;
}
int main()
{
    cin>>n;
    memset(dp,-1,sizeof dp);
    for(int i=0;i<n;i++)
    {
        cin>>a[i]>>a[i];
    }
    ll re=0;
    for(int i=0;i<n;i++)
    {
        re+=d(i,i);
        re%=mod;
    }cout<<re;

}

Subtask #1

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	1228 KB	Output is correct
2	Correct	3 ms	1228 KB	Output is correct
3	Correct	4 ms	1228 KB	Output is correct
4	Correct	3 ms	1228 KB	Output is correct
5	Correct	4 ms	1324 KB	Output is correct
6	Correct	4 ms	1228 KB	Output is correct
7	Correct	4 ms	1228 KB	Output is correct
8	Correct	4 ms	1208 KB	Output is correct
9	Correct	5 ms	1228 KB	Output is correct
10	Correct	5 ms	1228 KB	Output is correct
11	Correct	4 ms	1228 KB	Output is correct
12	Correct	4 ms	1228 KB	Output is correct
13	Correct	4 ms	1228 KB	Output is correct
14	Correct	4 ms	1228 KB	Output is correct
15	Correct	4 ms	1228 KB	Output is correct
16	Correct	4 ms	1228 KB	Output is correct
17	Correct	4 ms	1228 KB	Output is correct
18	Correct	4 ms	1228 KB	Output is correct
19	Correct	3 ms	1228 KB	Output is correct
20	Correct	5 ms	1320 KB	Output is correct

Subtask #2

0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	1228 KB	Output is correct
2	Correct	3 ms	1228 KB	Output is correct
3	Correct	4 ms	1228 KB	Output is correct
4	Correct	3 ms	1228 KB	Output is correct
5	Correct	4 ms	1324 KB	Output is correct
6	Correct	4 ms	1228 KB	Output is correct
7	Correct	4 ms	1228 KB	Output is correct
8	Correct	4 ms	1208 KB	Output is correct
9	Correct	5 ms	1228 KB	Output is correct
10	Correct	5 ms	1228 KB	Output is correct
11	Correct	4 ms	1228 KB	Output is correct
12	Correct	4 ms	1228 KB	Output is correct
13	Correct	4 ms	1228 KB	Output is correct
14	Correct	4 ms	1228 KB	Output is correct
15	Correct	4 ms	1228 KB	Output is correct
16	Correct	4 ms	1228 KB	Output is correct
17	Correct	4 ms	1228 KB	Output is correct
18	Correct	4 ms	1228 KB	Output is correct
19	Correct	3 ms	1228 KB	Output is correct
20	Correct	5 ms	1320 KB	Output is correct
21	Incorrect	3 ms	1324 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #3

0 / 27.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	1228 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4

0 / 42.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	1228 KB	Output is correct
2	Correct	3 ms	1228 KB	Output is correct
3	Correct	4 ms	1228 KB	Output is correct
4	Correct	3 ms	1228 KB	Output is correct
5	Correct	4 ms	1324 KB	Output is correct
6	Correct	4 ms	1228 KB	Output is correct
7	Correct	4 ms	1228 KB	Output is correct
8	Correct	4 ms	1208 KB	Output is correct
9	Correct	5 ms	1228 KB	Output is correct
10	Correct	5 ms	1228 KB	Output is correct
11	Correct	4 ms	1228 KB	Output is correct
12	Correct	4 ms	1228 KB	Output is correct
13	Correct	4 ms	1228 KB	Output is correct
14	Correct	4 ms	1228 KB	Output is correct
15	Correct	4 ms	1228 KB	Output is correct
16	Correct	4 ms	1228 KB	Output is correct
17	Correct	4 ms	1228 KB	Output is correct
18	Correct	4 ms	1228 KB	Output is correct
19	Correct	3 ms	1228 KB	Output is correct
20	Correct	5 ms	1320 KB	Output is correct
21	Incorrect	3 ms	1324 KB	Output isn't correct
22	Halted	0 ms	0 KB	-