Submission #467711

#	Time	Username	Problem	Language	Result	Execution time	Memory
467711		stefantaga	Furniture (JOI20_furniture)	C++14	0 / 100	19 ms	1484 KiB

furniture

#include <bits/stdc++.h>
#define MOD1 1000000007
#define MOD2 1000000013
using namespace std;
int n,m,i,j,k,t,q,x,y,val,val2;
int v[1005][1005],din[1005][1005],din2[1005][1005];
int main()
{
    ios_base :: sync_with_stdio(false);
    cin.tie(0);
#ifdef HOME
    ifstream cin("date.in");
    ofstream cout("date.out");
#endif // HOME
    cin>>n>>m;
    for (i=1; i<=n; i++)
    {
        for (j=1; j<=m; j++)
        {
            cin>>v[i][j];
        }
    }
    din[1][1]=din2[1][1]=1;
    for (i=1; i<=n; i++)
    {
        for (j=1; j<=m; j++)
        {
            din[i][j]=(din[i][j]+din[i-1][j]+din[i][j-1])%MOD1;
            din2[i][j]=(din2[i][j]+din2[i-1][j]+din2[i][j-1])%MOD2;
        }
    }
    for (i=1; i<=n; i++)
    {
        for (j=1; j<=m; j++)
        {
            if (v[i][j]==1)
            {
                val=din[i][j];
                val2=din2[i][j];
                for (k=i; k<=n; k++)
                {
                    for (t=j; t<=m; t++)
                    {
                        din[k][t]=(din[k][t]-val+MOD1)%MOD1;
                        din2[k][t]=(din2[k][t]-val2+MOD2)%MOD2;
                    }
                }
            }
        }
    }
    cin>>q;
    for (i=1; i<=q; i++)
    {
        cin>>x>>y;
        if (x==1&&y==1)
        {
            cout<<"0"<<'\n';
            continue;
        }
        if ((din[n][m]-din[x][y]+MOD1)%MOD1!=0&&(din2[n][m]-din2[x][y]+MOD2)%MOD2!=0)
        {
            cout<<"1"<<'\n';
            val=din[x][y];
            val2=din2[x][y];
            for (k=x; k<=n; k++)
            {
                for (t=y; t<=m; t++)
                {
                    din[k][t]=(din[k][t]-val+MOD1)%MOD1;
                    din2[k][t]=(din2[k][t]-val2+MOD2)%MOD2;
                }
            }
        }
        else
        {
            cout<<"0"<<'\n';
        }
    }
    return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95