Submission #12992

#	Time	Username	Problem	Language	Result	Execution time	Memory
12992		dohyun0324	마스코트 (JOI13_mascots)	C++98	100 / 100	132 ms	142676 KiB

mascots

#include<stdio.h>
int x,y,q,n,m,minx=2147483647,miny=2147483647,maxx,maxy;
long long dap=1,d[3010][3010],fact[3010],comb[3010][3010];
int main()
{
    int i,j;
    scanf("%d %d",&n,&m);
    scanf("%d",&q);
    for(i=1;i<=q;i++)
    {
        scanf("%d %d",&x,&y);
        if(minx>x) minx=x;
        if(maxx<x) maxx=x;
        if(miny>y) miny=y;
        if(maxy<y) maxy=y;
    }
    fact[1]=1;
    for(i=2;i<=3000;i++){fact[i]=fact[i-1]*i; fact[i]%=1000000007;}
    for(i=1;i<=(maxx-minx+1)*(maxy-miny+1)-q;i++){dap*=i; dap%=1000000007;}
    x=maxx-minx+1; y=maxy-miny+1;
    comb[0][0]=1;
    for(i=1;i<=3000;i++)
    {
        comb[i][0]=1;
        for(j=1;j<=i;j++)
        {
            comb[i][j]=comb[i-1][j]+comb[i-1][j-1];
            comb[i][j]%=1000000007;
        }
    }
    d[x][y]=1;
    for(i=x;i<=n;i++)
    {
        for(j=y;j<=m;j++)
        {
            if(i>x) d[i][j]+=d[i-1][j]*fact[j];
            if(j>y) d[i][j]+=d[i][j-1]*fact[i];
            d[i][j]%=1000000007;
        }
    }
    dap*=d[n][m]; dap%=1000000007;
    dap*=comb[n-x][minx-1]; dap%=1000000007;
    dap*=comb[m-y][miny-1]; dap%=1000000007;
    printf("%lld",dap);
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 60 / 60