#include<bits/stdc++.h>
using namespace std;
#define int long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, r, l) for(int i = r; i >= l; i--)
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
const int N = 105;
const int oo = 1e18 + 7, mod = 1e9 + 7;
int n, m, c[N][N], q;
bool vis[N][N];
bool ck(){
queue<ii> bfs;
bfs.clear();
bfs.push({1, 1});
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++) vis[i][j] = 0;
}
vis[1][1] = 1;
int cnt = 0;
while(!bfs.empty()){
ii u = bfs.front();
bfs.pop();
cnt++;
assert(cnt <= n * m);
vis[u.fi][u.se] = 1;
if(u == make_pair(n, m)) return 1;
if(u.se != m && c[u.fi][u.se + 1] == 0 && !vis[u.fi][u.se + 1]) bfs.push({u.fi, u.se + 1});
if(u.fi != n && c[u.fi + 1][u.se] == 0 && !vis[u.fi + 1][u.se]) bfs.push({u.fi + 1, u.se});
}
return 0;
}
void process(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++) cin >> c[i][j];
}
cin >> q;
while(q--){
int x, y;
cin >> x >> y;
c[x][y] = 1;
if(!ck()){
cout << 0 << "\n";
c[x][y] = 0;
}
else cout << 1 << "\n";
}
}
signed main(){
ios_base::sync_with_stdio(0);
process();
}
Compilation message
furniture.cpp: In function 'bool ck()':
furniture.cpp:26:7: error: 'class std::queue<std::pair<long long int, long long int> >' has no member named 'clear'
26 | bfs.clear();
| ^~~~~
