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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#87831 | #5112. Where Am I? | zoker | WA | 2ms | 3488kb | C++17 | 4.0kb | 2023-03-14 14:56:50 | 2023-03-14 14:56:51 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt")
using ll = long long int;
using ull = unsigned long long int;
using vi = vector<ll>;
using ii = pair<ll,ll>;
using vii = vector<ii>;
using ld = long double;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template<class T>
using ordered_set = tree < T, null_type, less<T>,
rb_tree_tag,
tree_order_statistics_node_update >;
#ifdef SA_DEBUG
template <class T>
void print(T a) {cerr << a << endl;}
template <class T, class... V>
void print(T a, V... b) {cerr << a << ", "; print(b...);}
#define dbg(...) cerr << "[" << __LINE__ << "] " << #__VA_ARGS__ << " :: ", print(__VA_ARGS__)
#else
#define dbg(...) 7
#endif
#define eb emplace_back
#define fi first
#define se second
const ll INFL = 2e18;
const int INF = 1e9;
const double PI = acos(-1);
const ll mod = 1e9+7;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template<class T, class V>
ostream& operator << (ostream &s, pair<T, V> a){
s << a.fi << ' ' << a.se; return s;
}
template<class T, class V>
istream& operator >> (istream &s, pair<T, V> &a){
s >> a.fi >> a.se; return s;
}
template<class T>
ostream& operator << (ostream &s, vector<T> a){
for(int i = 0; i < (int)a.size(); i++){
if(i > 0)s << ' ' ;
s << a[i];
} return s;
}
template<class T>
istream& operator >> (istream &s, vector<T> &a){
for(T &x : a)s >> x;
return s;
}
template<class T>
void input(T a[], int l, int r, istream &s = cin){
while(l <= r)s >> a[l++];
}
template<class T>
void output(T a[], int l, int r, bool en = true, ostream &s = cout){
while(l <= r){ s << a[l++];
if(l <= r) s << ' ';
} if(en)s << "\n";
}
const int N = 1e2+3, K = 26;
//====================================================================//
vector<int> L(1, -1), R(1, -1), cnt(1, 0);
string grid[N];
int di[] = {-1, 0, 1, 0};
int dj[] = {0, 1, 0, -1};
void testcase(){
int n, m;
cin >> m >> n;
int tot = 0;
for(int i = 0; i < n; i++)cin >> grid[i], tot += count(grid[i].begin(), grid[i].end(), 'X');
vector<pair<vector<int>, int>> all;
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
all.eb();
all.back().se = i * m + j;
int curI = i, curJ = j;
int k = 1, l = 2, p = 0, t = 0, mov = 0;
if(grid[i][j] == 'X')all.back().fi.eb(0);
while(all.back().fi.size() < tot){
curI += di[p];
curJ += dj[p];
mov++;
if(curI >= 0 && curI < n && curJ >= 0 && curJ < m && grid[curI][curJ] == 'X')all.back().fi.eb(mov);
t++;
if(t == k){
l--;
t = 0;
p = (p + 1) & 3;
if(l == 0)l = 2, k++;
}
//dbg(i, j);
}
}
}
sort(all.begin(), all.end());
vector<int> ans(all.size());
auto solve = [&](auto &&solve, int mov, int l, int r, int ind){
if(l == r){
ans[l] = mov - 1;
return;
}
int lo = l, hi = r + 1;
while(lo < hi){
int mid = lo + hi >> 1;
if(all[mid].fi[ind] == mov)lo = mid + 1;
else hi = mid;
}
if(l != lo)solve(solve, mov + 1, l, lo - 1, ind + 1);
if(lo != r + 1)solve(solve, mov + 1, lo, r, ind);
};
solve(solve, 0, 0, all.size() - 1, 0);
ld sum = accumulate(ans.begin(), ans.end(), 0LL);
sum /= ans.size();
cout << fixed << setprecision(3) << sum << "\n";
int mx = *max_element(ans.begin(), ans.end());
cout << mx << "\n";
vii temp;
for(int i = 0; i < ans.size(); i++){
if(ans[i] == mx){
temp.eb(n - all[i].se / m, all[i].se % m + 1);
}
}
sort(temp.begin(), temp.end());
for(int i = 0; i < temp.size(); i++){
cout << "(" << temp[i].se << "," << temp[i].fi << ")" << " \n"[i + 1 == temp.size() ];
}
cout << "\n";
}
int main(){
ios::sync_with_stdio(false);
cin.tie(NULL);
int T = 1;
//cin >> T;
for(int qq = 1; qq <= T; ++qq){
//cout << "Case #" << qq << ": ";
testcase();
}
return 0;
}
/*
6 1597352862016328480
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 3488kb
input:
1 1 X
output:
-1.000 -1 (1,1)
result:
wrong answer read -1.000000 but expected 0.000000, error = 1.000000