oj.uz

답안 #141521

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
141521 2019-08-08T09:57:18 Z cheetose 마스코트 (JOI13_mascots) C++11
100 / 100
 447 ms 213048 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[9000001];
ll inv[9000001];
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, 9000000, 1)
		fac[i] = (fac[i - 1] * i) % MOD;
	inv[9000000] = POW(fac[9000000], MOD - 2);
	fdn(i, 8999999, 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 297 ms 211700 KB Output is correct
2 Correct 293 ms 211644 KB Output is correct
3 Correct 294 ms 211808 KB Output is correct
4 Correct 300 ms 211732 KB Output is correct
5 Correct 295 ms 211688 KB Output is correct
6 Correct 295 ms 211708 KB Output is correct
7 Correct 296 ms 211656 KB Output is correct
8 Correct 296 ms 211676 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 295 ms 211776 KB Output is correct
2 Correct 298 ms 211780 KB Output is correct
3 Correct 293 ms 211768 KB Output is correct
4 Correct 295 ms 211652 KB Output is correct
5 Correct 328 ms 211704 KB Output is correct
6 Correct 296 ms 211732 KB Output is correct
7 Correct 294 ms 211700 KB Output is correct
8 Correct 298 ms 211712 KB Output is correct
9 Correct 297 ms 211700 KB Output is correct
10 Correct 295 ms 211696 KB Output is correct
11 Correct 302 ms 211660 KB Output is correct
12 Correct 298 ms 211640 KB Output is correct

Subtask #3
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 294 ms 211664 KB Output is correct
2 Correct 296 ms 211768 KB Output is correct
3 Correct 301 ms 211788 KB Output is correct
4 Correct 308 ms 211776 KB Output is correct
5 Correct 304 ms 211800 KB Output is correct
6 Correct 354 ms 212604 KB Output is correct
7 Correct 299 ms 211764 KB Output is correct
8 Correct 296 ms 211828 KB Output is correct
9 Correct 329 ms 212420 KB Output is correct
10 Correct 426 ms 212184 KB Output is correct
11 Correct 374 ms 212036 KB Output is correct
12 Correct 314 ms 212432 KB Output is correct
13 Correct 312 ms 211752 KB Output is correct
14 Correct 295 ms 211792 KB Output is correct
15 Correct 426 ms 212792 KB Output is correct
16 Correct 390 ms 211976 KB Output is correct
17 Correct 311 ms 212220 KB Output is correct
18 Correct 447 ms 213048 KB Output is correct