Submission #3453826
Source Code Expand
#include <iostream> using namespace std; const int MAX = 510000; const int MOD = 1000000007; unsigned long long fac[MAX], finv[MAX], inv[MAX]; // テーブルを作る前処理 void COMinit() { fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; inv[1] = 1; for (int i = 2; i < MAX; i++){ fac[i] = fac[i - 1] * i % MOD; inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD; finv[i] = finv[i - 1] * inv[i] % MOD; } } // 二項係数計算 unsigned long long COM(int n, int k){ if (n < k) return 0; if (n < 0 || k < 0) return 0; return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD; } int main() { // 前処理 COMinit(); int w,h; cin >> w; cin >> h; // 計算例 cout << COM(w+h-2, h-1) << endl; }
Submission Info
Submission Time | |
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Task | C - 経路 |
User | GochiusaLover |
Language | C++14 (GCC 5.4.1) |
Score | 101 |
Code Size | 796 Byte |
Status | AC |
Exec Time | 10 ms |
Memory | 12160 KB |
Judge Result
Set Name | Sample | Dataset1 | Dataset2 | All | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 50 / 50 | 50 / 50 | 1 / 1 | ||||||||
Status |
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Set Name | Test Cases |
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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 | 10 ms | 12160 KB |
001.txt | AC | 10 ms | 12160 KB |
002.txt | AC | 10 ms | 12160 KB |
003.txt | AC | 9 ms | 12160 KB |
004.txt | AC | 10 ms | 12160 KB |
005.txt | AC | 10 ms | 12160 KB |
006.txt | AC | 10 ms | 12160 KB |
007.txt | AC | 9 ms | 12160 KB |
008.txt | AC | 10 ms | 12160 KB |
009.txt | AC | 10 ms | 12160 KB |
010.txt | AC | 10 ms | 12160 KB |
011.txt | AC | 10 ms | 12160 KB |
012.txt | AC | 10 ms | 12160 KB |
013.txt | AC | 10 ms | 12160 KB |
014.txt | AC | 10 ms | 12160 KB |
015.txt | AC | 9 ms | 12160 KB |
016.txt | AC | 9 ms | 12160 KB |
017.txt | AC | 10 ms | 12160 KB |
018.txt | AC | 9 ms | 12160 KB |
019.txt | AC | 10 ms | 12160 KB |
020.txt | AC | 10 ms | 12160 KB |
021.txt | AC | 10 ms | 12160 KB |
022.txt | AC | 10 ms | 12160 KB |
023.txt | AC | 10 ms | 12160 KB |
024.txt | AC | 10 ms | 12160 KB |
025.txt | AC | 10 ms | 12160 KB |
026.txt | AC | 9 ms | 12160 KB |
027.txt | AC | 9 ms | 12160 KB |
028.txt | AC | 10 ms | 12160 KB |
029.txt | AC | 10 ms | 12160 KB |
030.txt | AC | 10 ms | 12160 KB |
031.txt | AC | 10 ms | 12160 KB |
032.txt | AC | 9 ms | 12160 KB |
s0.txt | AC | 9 ms | 12160 KB |
s1.txt | AC | 9 ms | 12160 KB |