oj.uz

답안 #141517

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
141517 2019-08-08T09:48:39 Z cheetose 마스코트 (JOI13_mascots) C++11
40 / 100
 72 ms 71032 KB 
#include<cstdio>
#include<cstdlib>
#include<iostream>
#include<vector>
#include<queue>
#include<bitset>
#include<string>
#include<stack>
#include<set>
#include<unordered_set>
#include<map>
#include<unordered_map>
#include<cstring>
#include<complex>
#include<cmath>
#include<iomanip>
#include<numeric>
#include<algorithm>
#include<list>
#include<functional>
#include<cassert>
#define mp make_pair
#define pb push_back
#define X first
#define Y second
#define y0 y12
#define y1 y22
#define INF 987654321
#define PI 3.141592653589793238462643383279502884
#define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
#define fdn(i,a,b,c) for(int (i)=(a);(i)>=(b);(i)-=(c))
#define MEM0(a) memset((a),0,sizeof(a));
#define MEM_1(a) memset((a),-1,sizeof(a));
#define ALL(a) a.begin(),a.end()
#define SYNC ios_base::sync_with_stdio(false);cin.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
typedef pair<ld, ld> Pd;
typedef vector<int> Vi;
typedef vector<ll> Vll;
typedef vector<double> Vd;
typedef vector<Pi> VPi;
typedef vector<Pll> VPll;
typedef vector<Pd> VPd;
typedef tuple<int, int, int> iii;
typedef tuple<int,int,int,int> iiii;
typedef tuple<ll, ll, ll> LLL;
typedef vector<iii> Viii;
typedef vector<LLL> VLLL;
typedef complex<double> base;
const ll MOD = 1000000007;
ll POW(ll a, ll b, ll MMM = MOD) {ll ret=1; for(;b;b>>=1,a=(a*a)%MMM)if(b&1)ret=(ret*a)% MMM; return ret; }
ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
ll lcm(ll a, ll b) { if (a == 0 || b == 0)return a + b; return a*(b / gcd(a, b)); }
int dx[] = { 0,1,0,-1,1,1,-1,-1 }, dy[] = { 1,0,-1,0,1,-1,1,-1 };

int n,m;
ll d[3001][3001];
ll fac[3001];
ll inv[3001];
ll nCr(int n, int r)
{
	if(r>n)return 0;
	ll c = fac[n];
	c = (c*inv[r]) % MOD;
	c = (c*inv[n - r]) % MOD;
	return c;
}
ll go(int N,int M)
{
	if(N==n && M==m)return 1;
	ll &ret=d[N][M];
	if(ret!=-1)return ret;
	ret=0;
	if(N<n)ret=(ret+fac[M]*go(N+1,M))%MOD;
	if(M<m)ret=(ret+fac[N]*go(N,M+1))%MOD;
	return ret;
}
int main() {
	fac[0] = inv[0] = 1;
	fup(i, 1, 3000, 1)
		fac[i] = (fac[i - 1] * i) % MOD;
	inv[3000] = POW(fac[3000], MOD - 2);
	fdn(i, 2999, 1, 1)
		inv[i] = (inv[i + 1] * (i+1)) % MOD;
	MEM_1(d);
	scanf("%d%d",&n,&m);
	int t;
	scanf("%d",&t);
	int mnx=INF,mxx=-1,mny=INF,mxy=-1;
	fup(i,1,t,1)
	{
		int x,y;
		scanf("%d%d",&x,&y);
		mxx=max(mxx,x);
		mnx=min(mnx,x);
		mxy=max(mxy,y);
		mny=min(mny,y);
	}
	int U=mnx-1,D=n-mxx,L=mny-1,R=m-mxy;
	int xx=mxx-mnx+1,yy=mxy-mny+1;
	ll ans=fac[xx*yy-t];
	ans=(ans*go(xx,yy))%MOD;
	ans=(ans*nCr(L+R,L))%MOD;
	ans=(ans*nCr(U+D,U))%MOD;
	printf("%lld\n",ans);
}

Compilation message

mascots.cpp: In function 'int main()':
mascots.cpp:93:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~
mascots.cpp:95:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&t);
  ~~~~~^~~~~~~~~
mascots.cpp:100:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&x,&y);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 60 ms 70904 KB Output is correct
2 Correct 60 ms 70880 KB Output is correct
3 Correct 60 ms 71032 KB Output is correct
4 Correct 61 ms 70880 KB Output is correct
5 Correct 63 ms 70904 KB Output is correct
6 Correct 60 ms 70904 KB Output is correct
7 Correct 60 ms 70820 KB Output is correct
8 Correct 60 ms 71032 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 61 ms 70904 KB Output is correct
2 Correct 60 ms 70792 KB Output is correct
3 Correct 60 ms 70900 KB Output is correct
4 Correct 72 ms 70904 KB Output is correct
5 Correct 60 ms 70832 KB Output is correct
6 Correct 60 ms 70880 KB Output is correct
7 Correct 60 ms 70904 KB Output is correct
8 Correct 60 ms 70852 KB Output is correct
9 Correct 60 ms 70904 KB Output is correct
10 Correct 60 ms 70904 KB Output is correct
11 Correct 60 ms 70908 KB Output is correct
12 Correct 60 ms 70776 KB Output is correct

Subtask #3
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 60 ms 70844 KB Output is correct
2 Incorrect 61 ms 70904 KB Output isn't correct
3 Halted 0 ms 0 KB -