//♥God will make a way♥
//#include <bits/stdc++.h>
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cassert>
#include <set>
#include <map>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stdio.h>
#include <climits>
#include <numeric>
using namespace std;
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;
//template <typename T>
//using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
/////////////////////define/////////////////////
#define ci(x) if(x) cout << "YES" << '\n'; else cout << "NO" << '\n';
#define cii(x) if(check(x))
#define MOD 1000000007
#define MOD2 998244353
#define oo 1e9
#define ool 1e18L
#define pii pair<int, int>
#define pll pair<long long, long long>
#define mii map<int, int>
#define vi vector<int>
#define vpi vector<pair<int, int>>
#define vll vector <ll>
#define ff first
#define ss second
#define mp make_pair
#define ll long long
#define ld long double
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound
#define bs binary_search
#define sz(x) (int((x).size()))
#define all(x) (x).begin(), (x).end()
#define alll(x) (x), (x) + n
#define clr(x) (x).clear();
#define fri(x) for(int i = 0; i < x; ++i)
#define frj(x) for(int j = 0; j < x; ++j)
#define frp(x) for(int p = 0; p < x; ++p)
#define frr(a, b) for(int i = a; i < b; ++i)
#define frrj(a, b) for(int j = a; j < b; ++j)
#define fra(x) for(int i = 0; i < x; ++i) cin >> a[i];
#define frb(x) for(int i = 0; i < x; ++i) cin >> b[i];
#define frs(x) for(auto it = x.begin(); it != x.end(); ++it)
#define fr(x) for(auto it : x) //el
#define fastio ios_base::sync_with_stdio(false); cin.tie(0);
#define dbg(x) cerr << #x << ": " << x << endl;
#define ce(x) cout << x << endl;
#define uniq(x) x.resize(unique(all(x)) - x.begin()); //make all one after sorting
#define blt __builtin_popcount
/////////////////////print array, vector, deque, set, multiset, pair, map /////////////////////
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]"; cout << endl;}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(stack <T> v) {cerr << "[ "; stack<T> s = v; while(s.size()) {T i = s.top(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(queue <T> v) {cerr << "[ "; queue<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(deque <T> v) {cerr << "[ "; deque<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop_front(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
/////////////////////de/////////////////////
int a[1005][1005];
bool used[1005][1005];
int n, m;
void dfs(int x, int y) {
used[x][y] = 1;
if(x + 1 < n && !a[x+1][y] && !used[x+1][y]) dfs(x+1, y);
if(y + 1 < m && !a[x][y+1] && !used[x][y+1]) dfs(x, y+1);
}
bool check() {
fri(n) frj(m) used[i][j] = 0;
dfs(0, 0);
// fri(n) print(used[i], m);
return (used[n-1][m-1]);
}
int main() {
fastio;
int x, y; cin >> n >> m;
fri(n) frj(m) cin >> a[i][j];
int q; cin >> q;
fri(q) {
cin >> x >> y; x--, y--;
a[x][y] = 1;
if(check()) {
cout << 1 << '\n';
} else {
cout << 0 << '\n';
a[x][y] = 0;
}
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
596 KB |
Output is correct |
| 2 |
Correct |
7 ms |
852 KB |
Output is correct |
| 3 |
Correct |
20 ms |
820 KB |
Output is correct |
| 4 |
Correct |
33 ms |
856 KB |
Output is correct |
| 5 |
Correct |
36 ms |
896 KB |
Output is correct |
| 6 |
Correct |
57 ms |
904 KB |
Output is correct |
| 7 |
Correct |
24 ms |
852 KB |
Output is correct |
| 8 |
Correct |
28 ms |
852 KB |
Output is correct |
| 9 |
Correct |
96 ms |
912 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
596 KB |
Output is correct |
| 2 |
Correct |
7 ms |
852 KB |
Output is correct |
| 3 |
Correct |
20 ms |
820 KB |
Output is correct |
| 4 |
Correct |
33 ms |
856 KB |
Output is correct |
| 5 |
Correct |
36 ms |
896 KB |
Output is correct |
| 6 |
Correct |
57 ms |
904 KB |
Output is correct |
| 7 |
Correct |
24 ms |
852 KB |
Output is correct |
| 8 |
Correct |
28 ms |
852 KB |
Output is correct |
| 9 |
Correct |
96 ms |
912 KB |
Output is correct |
| 10 |
Correct |
1462 ms |
892 KB |
Output is correct |
| 11 |
Correct |
33 ms |
596 KB |
Output is correct |
| 12 |
Execution timed out |
5035 ms |
7316 KB |
Time limit exceeded |
| 13 |
Halted |
0 ms |
0 KB |
- |
