Submission #1474242
Source Code Expand
#include <iostream> #include <cstring> #include <cmath> #include <algorithm> #include <cstdio> #include <fstream> #include <map> #include <vector> //#include <unordered_map> //#include <unordered_set> #include <stack> #include <set> #include <queue> #include <list> using namespace std; long long mod=1e9+7; long long k[100005]; int f[100005]; int main() { int n,z; scanf("%d",&n); for(int i=1;i<=n;++i) scanf("%d",&f[i]); f[1]=1; if(f[2]>2) f[2]=3; k[1]=1; k[2]=2; for(int i=3;i<=n;++i) { if(f[i]>f[i-1]+1) f[i]=f[i-1]+2; k[i]=(k[i-1]*(i-(2*(i-1)-f[i-1])/2))%mod; } cout<<k[n]<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | A - Robot Racing |
User | vjudge1 |
Language | C++14 (Clang 3.8.0) |
Score | 900 |
Code Size | 670 Byte |
Status | AC |
Exec Time | 15 ms |
Memory | 1536 KB |
Judge Result
Set Name | Sample | Subtask | All | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | 400 / 400 | ||||||
Status |
|
|
|
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 | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | AC | 1 ms | 256 KB |
0_03.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 1 ms | 256 KB |
1_02.txt | AC | 1 ms | 256 KB |
1_03.txt | AC | 1 ms | 256 KB |
1_04.txt | AC | 1 ms | 256 KB |
1_05.txt | AC | 1 ms | 256 KB |
1_06.txt | AC | 1 ms | 256 KB |
1_07.txt | AC | 1 ms | 256 KB |
1_08.txt | AC | 1 ms | 256 KB |
1_09.txt | AC | 1 ms | 256 KB |
1_10.txt | AC | 1 ms | 256 KB |
2_00.txt | AC | 13 ms | 1408 KB |
2_01.txt | AC | 13 ms | 1408 KB |
2_02.txt | AC | 15 ms | 1408 KB |
2_03.txt | AC | 13 ms | 1408 KB |
2_04.txt | AC | 13 ms | 1408 KB |
2_05.txt | AC | 13 ms | 1536 KB |
2_06.txt | AC | 13 ms | 1408 KB |
2_07.txt | AC | 13 ms | 1408 KB |
2_08.txt | AC | 13 ms | 1408 KB |
2_09.txt | AC | 13 ms | 1408 KB |
2_10.txt | AC | 13 ms | 1408 KB |
2_11.txt | AC | 14 ms | 1408 KB |
2_12.txt | AC | 14 ms | 1408 KB |