Submission #1689524
Source Code Expand
#include <bits/stdc++.h> #include <stdio.h> using namespace std; #define INF 2147483647 #define LINF 9223372036854775807 #define FOR(i,a,b) for (int i = (a); i < (b); ++i) #define REP(i,n) FOR(i,0,n) #define ALL(v) (v).begin(), (v).end() typedef long long ll; typedef pair<ll, int> P; int w,h; const ll MOD=1e9+7; ll kaijou(ll x) { ll res=1; while (x>0) { (res*=x)%=MOD; x--; } return res%MOD; } ll calc(ll x, ll m) { if(m==0) return 1; else if(m%2==0) return calc(x*x%MOD,m>>1)%MOD; else return calc(x*x%MOD,m>>1)*x%MOD; } int main(){ cin.tie(0); ios::sync_with_stdio(false); cin>>w>>h; ll a=kaijou(w+h-2); ll b=kaijou(h-1)*kaijou(w-1)%MOD; cout<<(a*calc(b,MOD-2)%MOD)<<endl; return 0; }
Submission Info
Submission Time | |
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Task | C - 経路 |
User | moko_freedom |
Language | C++14 (GCC 5.4.1) |
Score | 101 |
Code Size | 757 Byte |
Status | AC |
Exec Time | 3 ms |
Memory | 256 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 | 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 | 1 ms | 256 KB |
012.txt | AC | 1 ms | 256 KB |
013.txt | AC | 1 ms | 256 KB |
014.txt | AC | 1 ms | 256 KB |
015.txt | AC | 1 ms | 256 KB |
016.txt | AC | 1 ms | 256 KB |
017.txt | AC | 1 ms | 256 KB |
018.txt | AC | 1 ms | 256 KB |
019.txt | AC | 1 ms | 256 KB |
020.txt | AC | 1 ms | 256 KB |
021.txt | AC | 1 ms | 256 KB |
022.txt | AC | 3 ms | 256 KB |
023.txt | AC | 3 ms | 256 KB |
024.txt | AC | 2 ms | 256 KB |
025.txt | AC | 2 ms | 256 KB |
026.txt | AC | 2 ms | 256 KB |
027.txt | AC | 2 ms | 256 KB |
028.txt | AC | 3 ms | 256 KB |
029.txt | AC | 2 ms | 256 KB |
030.txt | AC | 2 ms | 256 KB |
031.txt | AC | 2 ms | 256 KB |
032.txt | AC | 3 ms | 256 KB |
s0.txt | AC | 1 ms | 256 KB |
s1.txt | AC | 1 ms | 256 KB |