#include <bits/stdc++.h>
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>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<str> vstr;
#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define rsz resize
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)
const double EPS = 1e-9;
const int MOD = 1e9+7; // 998244353;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};
#ifdef DEBUG
#define DBG if(1)
#else
#define DBG if(0)
#endif
#define dbg(x) cout << "(" << #x << " : " << x << ")" << endl;
// ostreams
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "["; REP(i, v.size()) out << v[i] << ", "; out << "]"; return out;}
// istreams
template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }
template<class T, class U>
istream& operator>>(istream& in, pair<T, U> &p){ in >> p.ff >> p.ss; return in; }
//searches
template<typename T, typename U>
T bsl(T lo, T hi, U f){ hi++; T mid; while(lo < hi){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid+1; } return lo; }
template<typename U>
double bsld(double lo, double hi, U f, double p = 1e-9){ int r = 3 + (int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid; } return (lo + hi)/2; }
template<typename T, typename U>
T bsh(T lo, T hi, U f){ lo--; T mid; while(lo < hi){ mid = (lo + hi + 1)/2; f(mid) ? lo = mid : hi = mid-1; } return lo; }
template<typename U>
double bshd(double lo, double hi, U f, double p = 1e-9){ int r = 3+(int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? lo = mid : hi = mid; } return (lo + hi)/2; }
// some more utility functions
template<typename T>
pair<T, int> get_min(vector<T> &v){ typename vector<T> :: iterator it = min_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T>
pair<T, int> get_max(vector<T> &v){ typename vector<T> :: iterator it = max_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T> bool ckmin(T& a, const T& b){return b < a ? a = b , true : false;}
template<typename T> bool ckmax(T& a, const T& b){return b > a ? a = b, true : false;}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
int n, m;
cin >> n >> m;
vi cnt(n + m + 10, 0);
vector<vi> c(n, vi(m, 0));
auto add_block = [&](int row, int col){
if(c[row][col] == 1) return 1;
if(cnt[row + col] - 1 == 0){
return 0;
}
else{
auto bd = [&](int f, int s){
return (f < 0 || f >= n || s < 0 || s >= m || c[f][s] == 1);
};
queue<array<int, 2>> q;
q.push({row, col});
while(!q.empty()){
array<int, 2> v = q.front();
q.pop();
if(c[v[0]][v[1]] == 1) continue;
if((v[0] == 0 && v[1] == 0) || (v[0] == n - 1 && v[1] == m - 1)) continue;
c[v[0]][v[1]] = 1;
cnt[v[0] + v[1]]--;
REP(sm, 4){
int ny = v[0] + dy[sm];
int nx = v[1] + dx[sm];
if(ny < 0 || ny >= n || nx < 0 || nx >= m) continue;
if(bd(ny + 1, nx) && bd(ny, nx + 1))
q.push({ny, nx});
else if(bd(ny - 1, nx) && bd(ny, nx - 1))
q.push({ny, nx});
}
}
return 1;
}
};
vector<vi> in(n, vi(m, 0));
REP(i, n) cin >> in[i];
REP(i, n) REP(j, m) cnt[i + j]++;
REP(i, n){
REP(j, m){
if(in[i][j] == 1)
add_block(i, j);
}
}
int q; cin >> q;
REP(i, q){
int row, col;
cin >> row >> col;
row--; col--;
cout << add_block(row, col) << "\n";
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
2 ms |
364 KB |
Output is correct |
| 3 |
Correct |
3 ms |
492 KB |
Output is correct |
| 4 |
Correct |
4 ms |
492 KB |
Output is correct |
| 5 |
Correct |
4 ms |
492 KB |
Output is correct |
| 6 |
Correct |
5 ms |
492 KB |
Output is correct |
| 7 |
Correct |
4 ms |
492 KB |
Output is correct |
| 8 |
Correct |
4 ms |
492 KB |
Output is correct |
| 9 |
Correct |
4 ms |
492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
2 ms |
364 KB |
Output is correct |
| 3 |
Correct |
3 ms |
492 KB |
Output is correct |
| 4 |
Correct |
4 ms |
492 KB |
Output is correct |
| 5 |
Correct |
4 ms |
492 KB |
Output is correct |
| 6 |
Correct |
5 ms |
492 KB |
Output is correct |
| 7 |
Correct |
4 ms |
492 KB |
Output is correct |
| 8 |
Correct |
4 ms |
492 KB |
Output is correct |
| 9 |
Correct |
4 ms |
492 KB |
Output is correct |
| 10 |
Correct |
17 ms |
1132 KB |
Output is correct |
| 11 |
Correct |
4 ms |
492 KB |
Output is correct |
| 12 |
Correct |
259 ms |
12396 KB |
Output is correct |
| 13 |
Correct |
97 ms |
9076 KB |
Output is correct |
| 14 |
Correct |
414 ms |
17028 KB |
Output is correct |
| 15 |
Correct |
416 ms |
16828 KB |
Output is correct |
| 16 |
Correct |
421 ms |
18284 KB |
Output is correct |
| 17 |
Correct |
432 ms |
18540 KB |
Output is correct |
| 18 |
Correct |
442 ms |
18464 KB |
Output is correct |
| 19 |
Correct |
458 ms |
18800 KB |
Output is correct |
| 20 |
Correct |
427 ms |
18680 KB |
Output is correct |
| 21 |
Correct |
449 ms |
18284 KB |
Output is correct |
