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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#637072 | #2924. Lone Rook | enze114514# | WA | 0ms | 3868kb | C++20 | 3.1kb | 2024-10-13 07:57:20 | 2024-10-13 07:57:21 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define pb push_back
const ld pi = 3.14159265358979323846;
const int mod = 998244353;
const ll INF = 1e18;
template<typename T>
T chmax(T a, T b) {
return a > b ? a : b;
}
template<typename T>
T chmin(T a, T b) {
return a > b ? b : a;
}
const int N = (int)1e5 + 1, M = N * 2;
int dirx[4] = {1, -1, 0, 0};
int diry[4] = {0, 0, 1, -1};
void solve(){
int n, m;
cin >> n >> m;
char c[n][m];
vector<vector<int>> d(n, vector<int>(m, 0));
pair<int, int> st;
auto set = [&](int i, int j, int op) -> void{
if(i - 2 >= 0 && j - 1 >= 0) d[i - 2][j - 1] = op;
if(i - 2 >= 0 && j + 1 < m) d[i - 2][j + 1] = op;
if(i - 1 >= 0 && j - 2 >= 0) d[i - 1][j - 2] = op;
if(i - 1 >= 0 && j + 2 < m) d[i - 1][j + 2] = op;
if(i + 1 < n && j - 2 >= 0) d[i + 1][j - 2] = op;
if(i + 1 < n && j + 2 < m) d[i + 1][j + 2] = op;
if(i + 2 < n && j - 1 >= 0) d[i + 2][j - 1] = op;
if(i + 2 < n && j + 1 < m) d[i + 2][j + 1] = op;
};
for(int i = 0; i < n; i++){
string s;
cin >> s;
for(int j = 0; j < m; j++){
c[i][j] = s[j];
if(c[i][j] == 'R'){
st = {i, j};
}
if(c[i][j] == 'K'){
set(i, j, 1);
}
}
}
vector<vector<int>> vis(n + 1, vector<int>(m + 1, 0));
while(1){
queue<pair<int, int>> q;
q.push(st);
vector<pair<int, int>> hr;
vis[0][0] = 1;
while(!q.empty()){
pair<int, int> p = q.front();
q.pop();
int x = p.first, y = p.second;
for(int i = 0; i < 4; i++){
int dx = x, dy = y;
while(dx >= 0 && dy >= 0 && dx < n && dy < m){
if(d[dx][dy] || vis[dx][dy]){
}
else{
vis[dx][dy] = 1;
if(c[dx][dy] == 'K'){
hr.pb({dx, dy});
}
else{
if(c[dx][dy] == 'T'){
cout << "yes" << endl;
return;
}
q.push({dx, dy});
}
}
dx += dirx[i], dy += diry[i];
}
}
}
if(hr.size() == 0){
cout << "no" << endl;
return;
}
else{
for(auto p : hr){
c[p.first][p.second] = '.';
set(p.first, p.second, 0);
}
}
}
}
int main() {
// freopen(".in", "r", stdin);
// freopen(".out", "w", stdout);
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int t = 1;
// cin >> t;
while(t--){
solve();
}
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3868kb
input:
2 2 KR TK
output:
no
result:
wrong answer 1st lines differ - expected: 'yes', found: 'no'