Submission #1247924
Source Code Expand
#include<iostream> using namespace std; typedef long long LL; const LL mod = 1000000007; LL modp(LL x, LL n, LL md) { if (n == 0)return 1; LL res = modp(x*x%md, n / 2, md); if (n & 1)res = res*x%mod; return res; } int main() { LL w, h; cin >> w >> h; //(w+h-2)!/(h-1)!(w-1)! //a^(p-2)===a^-1 LL ans = 1; for (int i = 1; i <= w + h - 2; i++) { ans *= i; ans %= mod; } for (int i = 1; i <= h - 1; i++) { ans *= (modp(i, mod - 2, mod) % mod); ans %= mod; } for (int i = 1; i <= w - 1; i++) { ans *= (modp(i, mod - 2, mod) % mod); ans %= mod; } cout << ans%mod << endl; getchar(); getchar(); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - 経路 |
User | Rho17 |
Language | C++14 (GCC 5.4.1) |
Score | 101 |
Code Size | 670 Byte |
Status | AC |
Exec Time | 93 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | Dataset1 | Dataset2 | All | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 50 / 50 | 50 / 50 | 1 / 1 | ||||||||
Status |
|
|
|
|
Set Name | Test Cases |
---|---|
Sample | s0.txt, s1.txt |
Dataset1 | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, s0.txt |
Dataset2 | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, s0.txt, s1.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, 029.txt, 030.txt, 031.txt, 032.txt, s0.txt, s1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 1 ms | 256 KB |
001.txt | AC | 1 ms | 256 KB |
002.txt | AC | 1 ms | 256 KB |
003.txt | AC | 1 ms | 256 KB |
004.txt | AC | 1 ms | 256 KB |
005.txt | AC | 1 ms | 256 KB |
006.txt | AC | 1 ms | 256 KB |
007.txt | AC | 1 ms | 256 KB |
008.txt | AC | 1 ms | 256 KB |
009.txt | AC | 1 ms | 256 KB |
010.txt | AC | 1 ms | 256 KB |
011.txt | AC | 2 ms | 256 KB |
012.txt | AC | 2 ms | 256 KB |
013.txt | AC | 2 ms | 256 KB |
014.txt | AC | 2 ms | 256 KB |
015.txt | AC | 2 ms | 256 KB |
016.txt | AC | 2 ms | 256 KB |
017.txt | AC | 2 ms | 256 KB |
018.txt | AC | 2 ms | 256 KB |
019.txt | AC | 2 ms | 256 KB |
020.txt | AC | 2 ms | 256 KB |
021.txt | AC | 2 ms | 256 KB |
022.txt | AC | 78 ms | 256 KB |
023.txt | AC | 68 ms | 256 KB |
024.txt | AC | 63 ms | 256 KB |
025.txt | AC | 20 ms | 256 KB |
026.txt | AC | 19 ms | 256 KB |
027.txt | AC | 60 ms | 256 KB |
028.txt | AC | 72 ms | 256 KB |
029.txt | AC | 39 ms | 256 KB |
030.txt | AC | 69 ms | 256 KB |
031.txt | AC | 53 ms | 256 KB |
032.txt | AC | 93 ms | 256 KB |
s0.txt | AC | 1 ms | 256 KB |
s1.txt | AC | 2 ms | 256 KB |