Submission #3623789
Source Code Expand
#include <algorithm> #include <cassert> #include <cctype> #include <climits> #include <cmath> #include <complex> #include <cstdio> #include <cstring> #include <deque> #include <functional> #include <iomanip> #include <iostream> #include <map> #include <numeric> #include <queue> #include <random> #include <set> #include <stack> #include <string> #include <tuple> #include <unordered_map> #include <vector> #define rep(i, n) for (int i = 0; i < (int)(n); ++i) #define show(x) cout << #x << " = " << (x) << endl; using namespace std; using ll = long long; using pii = pair<int,int>; ll mod = 1e9+7; pii a[200005]; int main(){ int n; scanf("%d", &n); rep(i,2*n){ scanf("%d", &a[i].first); a[i].second = i; } sort(a,a+2*n); ll ans = 1; int hoge = 0; rep(i,2*n){ if(a[i].second < n){ if(hoge< 0) ans = ans * (-hoge) % mod; hoge++; }else{ if(hoge > 0) ans = ans * hoge % mod; hoge--; } } printf("%lld\n", ans); }
Submission Info
Submission Time | |
---|---|
Task | A - 1D Matching |
User | polyomino |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 1084 Byte |
Status | AC |
Exec Time | 41 ms |
Memory | 1792 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:32:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ ./Main.cpp:34:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i].first); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | ||||
Status |
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Set Name | Test Cases |
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Sample | example0.txt, example1.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, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 25 ms | 1152 KB |
001.txt | AC | 10 ms | 640 KB |
002.txt | AC | 13 ms | 768 KB |
003.txt | AC | 14 ms | 768 KB |
004.txt | AC | 37 ms | 1664 KB |
005.txt | AC | 41 ms | 1792 KB |
006.txt | AC | 41 ms | 1792 KB |
007.txt | AC | 41 ms | 1792 KB |
008.txt | AC | 41 ms | 1792 KB |
009.txt | AC | 41 ms | 1792 KB |
010.txt | AC | 40 ms | 1792 KB |
011.txt | AC | 40 ms | 1792 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |