QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#626278 | #4234. Tic Tac Toe Counting | nickbelov# | WA | 157ms | 4008kb | C++20 | 4.8kb | 2024-10-10 01:56:46 | 2024-10-10 01:56:46 |
Judging History
answer
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template<typename T>
ostream_iterator<T> oit(const string &s = " "){ return ostream_iterator<T>(cout,s.c_str()); }
inline auto rep(int l, int r) { return views::iota(min(l, r), r); }
inline auto rep(int n) { return rep(0, n); }
inline auto rep1(int l, int r) { return rep(l, r + 1); }
inline auto rep1(int n) { return rep(1, n + 1); }
inline auto per(int l, int r) { return rep(l, r) | views::reverse; }
inline auto per(int n) { return per(0, n); }
inline auto per1(int l, int r) { return per(l, r + 1); }
inline auto per1(int n) { return per(1, n + 1); }
#define A(a) begin(a),end(a)
inline auto len = ranges::ssize;
struct chash {
static uint64_t splitmix64(uint64_t x) {
// http://xorshift.di.unimi.it/splitmix64.c
x += 0x9e3779b97f4a7c15;
x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
return x ^ (x >> 31);
}
size_t operator()(uint64_t x) const {
static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
return splitmix64(x + FIXED_RANDOM);
}
};
template<typename T, typename U> using pb_map = gp_hash_table<T, U, chash>;
template<typename T> using pb_set = gp_hash_table<T, null_type, chash>;
#define K first
#define V second
using ll = long long;
using ld = long double;
using vi = vector<int>;
using vii = vector<vector<int>>;
typedef vector<ll> vll;
using pll = pair<ll,ll>;
using pii = pair<int,int>;
using B = array<array<char,3>,3>;
string BS(B b){
string s; for(auto &v : b) for(char c : v) s+=c;
return s;
}
map<B,pii> dp;
void run()
{
B g {};
for(auto &v : g) for(auto &c : v) cin >> c;
int xc=0,oc=0; //wrong number of guys
{
for(auto &v : g) for(auto c : v)
xc+=c=='X',oc+=c=='O';
if((xc-oc) != 0 and ((xc-oc)!=1))
return void(cout << "-1 -1\n");
}
auto find_lines = [](char w, B &g){
vector<set<pii>> lines;
for(int i : rep(3)){ //horizontal
set<pii> ln; bool good = true;
for(int j : rep(3)){
ln.insert({i,j});
good and_eq g[i][j]==w;
}
if(good) lines.push_back(ln);
}
for(int j : rep(3)){ //vertical
set<pii> ln; bool good = true;
for(int i : rep(3)){
ln.insert({i,j});
good and_eq g[i][j]==w;
}
if(good) lines.push_back(ln);
}
{ //diag1
set<pii> ln; bool good = true;
for(int i : rep(3))
good and_eq g[i][i]==w,ln.insert({i,i});
if(good) lines.push_back(ln);
}
{ //diag2
set<pii> ln; bool good = true;
for(int i : rep(3))
good and_eq g[i][3-i-1]==w,ln.insert({i,3-i-1});
if(good) lines.push_back(ln);
}
return lines;
};
auto l1 = find_lines('X',g), l2 = find_lines('O',g);
if(not l1.empty() and not l2.empty()){ //two winners?
return void(cout << "-1 -1\n");
}
if(not l1.empty()){ //multiply non intersecting winning lines
set<pii> l = l1[0];
for(auto &st : l1){
set<pii> nl;
for(auto x : st) if(l.contains(x)) nl.insert(x);
l=nl;
}
if(l.empty())
return void(cout << "-1 -1\n");
}
if(not l2.empty()){
set<pii> l = l2[0];
for(auto &st : l2){
set<pii> nl;
for(auto x : st) if(l.contains(x)) nl.insert(x);
l=nl;
}
if(l.empty())
return void(cout << "-1 -1\n");
}
array<char,2> ca = {'X','O'};
function<pii(B,int turn)> rec = [&](B state,int turn){
if(dp.contains(state)) return dp[state];
auto &here = dp[state]; here = {0,0};
auto res = find_lines(ca[turn^1],state);
if(not res.empty()){
if(turn==0) here.second++; //if its player 1s turn now, player 2 must have just won
else here.first++;
return here;
}
for(int i : rep(3)){
for(int j : rep(3)){
if(state[i][j]!='.') continue;
B nstate = state; nstate[i][j] = ca[turn];
auto [add1,add2] = rec(nstate,turn^1);
here.first+=add1,here.second+=add2;
}
}
return here;
};
auto ans = rec(g,(xc+oc)%2);
cout << ans.first << " " << ans.second << '\n';
}
int main()
{
//KING OF THE WORLD...... U.W.T.B
cin.tie(0);
ios_base::sync_with_stdio(false);
int t; cin>>t; while(t--) run();
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3584kb
input:
4 XX..O.... X...OX... OOOX.X.X. OOOXXX...
output:
191 194 232 200 0 1 -1 -1
result:
ok 4 lines
Test #2:
score: 0
Accepted
time: 157ms
memory: 4004kb
input:
100000 ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... ......
output:
131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 131184 77904 1...
result:
ok 100000 lines
Test #3:
score: -100
Wrong Answer
time: 68ms
memory: 4008kb
input:
100000 ......... X........ O........ .X....... XX....... OX....... .O....... XO....... OO....... ..X...... X.X...... O.X...... .XX...... XXX...... OXX...... .OX...... XOX...... OOX...... ..O...... X.O...... O.O...... .XO...... XXO...... OXO...... .OO...... XOO...... OOO...... ...X..... X..X..... O.....
output:
131184 77904 14652 7896 -1 -1 14232 10176 -1 -1 1798 1276 -1 -1 2048 756 -1 -1 14652 7896 -1 -1 1832 1132 -1 -1 -1 -1 220 248 2048 756 268 144 -1 -1 -1 -1 1832 1132 -1 -1 1798 1276 220 248 -1 -1 -1 -1 -1 -1 -1 -1 14232 10176 -1 -1 1798 1276 -1 -1 -1 -1 264 188 1868 1080 239 126 -1 -1 -1 -1 -1 -1 312...
result:
wrong answer 882nd lines differ - expected: '-1 -1', found: '3 0'