Submission #508777

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
508777	2022-01-13 17:57:21	nichke	Furniture (JOI20_furniture)	C++14	0 / 100	2 ms	720 KiB

furniture

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// I may fail a thousand times
// But there is no giving up
// IOI - here I come
#include <bits/stdc++.h>
using namespace std;
int n,m;
map<int,int> cnt;
int a[(int)1e3+5][(int)1e3+5];
signed main(){
  ios_base::sync_with_stdio(0);cin.tie(0);
  cin>>n>>m;
  for(int i=0;i<n;i++){
    for(int j=0;j<m;j++){
      cin>>a[i][j];
      cnt[i+j]++;
    }
  }
  for(int i=0;i<n;i++){
    for(int j=0;j<m;j++){
      if(a[i][j]){
        cnt[i+j]--;
      }
    }
  }
  int q;cin>>q;
  for(;q;q--){
    int x,y;cin>>x>>y;
    x--;y--;
    if(cnt[x+y]==1)cout<<0<<'\n';
    else{
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 0 / 95