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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#173650 | #7180. Forward-Capturing Pawns | ucup-team180# | WA | 330ms | 85144kb | C++17 | 7.5kb | 2023-09-10 00:54:48 | 2023-09-10 00:54:48 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
vector<int> dx = {1, 0, -1, 0, 1, 1, -1, -1};
vector<int> dy = {0, 1, 0, -1, 1, -1, 1, -1};
int main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
auto X = [&](int x){
return x & 7;
};
auto Y = [&](int x){
return x >> 3 & 7;
};
auto wk = [&](int x){
return x & 63;
};
auto wp = [&](int x){
return x >> 6 & 63;
};
auto bk = [&](int x){
return x >> 12 & 63;
};
auto in_grid = [&](int x, int y){
return 0 <= x && x < 8 && 0 <= y && y < 8;
};
auto piece = [&](int x, int y){
return x | (y << 3);
};
auto board = [&](int WK, int WP, int BK){
return WK | (WP << 6) | (BK << 12);
};
vector<bool> is_distinct(1 << 18, true);
for (int i = 0; i < (1 << 18); i++){
if (wk(i) == bk(i) || bk(i) == wp(i) || wp(i) == wk(i)){
is_distinct[i] = false;
}
}
vector<bool> king_check(1 << 18, false);
for (int i = 0; i < (1 << 18); i++){
if (abs(X(wk(i)) - X(bk(i))) <= 1 && abs(Y(wk(i)) - Y(bk(i))) <= 1){
king_check[i] = true;
}
}
vector<vector<bool>> piece_check(2, vector<bool>(1 << 18, false));
for (int i = 0; i < (1 << 18); i++){
if (X(bk(i)) == X(wp(i))){
if (Y(bk(i)) == Y(wp(i)) + 1){
piece_check[0][i] = true;
}
if (Y(bk(i)) == Y(wp(i)) + 2){
if (!(X(wk(i)) == X(wp(i)) && Y(wk(i)) == Y(wp(i)) + 2)){
piece_check[0][i] = true;
}
}
}
}
for (int i = 0; i < (1 << 18); i++){
for (int j = 0; j < 8; j++){
int x = X(wp(i)), y = Y(wp(i));
while (true){
x += dx[j];
y += dy[j];
if (!in_grid(x, y)){
break;
}
if (piece(x, y) == wk(i)){
break;
}
if (piece(x, y) == bk(i)){
piece_check[1][i] = true;
}
}
}
}
vector<vector<bool>> is_checkmate(2, vector<bool>(1 << 18, false));
vector<vector<bool>> is_stalemate(2, vector<bool>(1 << 18, false));
for (int i = 0; i < 2; i++){
for (int j = 0; j < (1 << 18); j++){
if (is_distinct[j] && !king_check[j]){
bool ok = true;
for (int k = 0; k < 8; k++){
int x = X(bk(j)) + dx[k];
int y = Y(bk(j)) + dy[k];
if (in_grid(x, y)){
int j2 = board(wk(j), wp(j), piece(x, y));
if (is_distinct[j]){
if (!king_check[j2] && !piece_check[i][j2]){
ok = false;
}
}
}
}
if (ok){
if (piece_check[i][j]){
is_checkmate[i][j] = true;
} else {
is_stalemate[i][j] = true;
}
}
}
}
}
vector<vector<vector<bool>>> is_reasonable(2, vector<vector<bool>>(2, vector<bool>(1 << 18, true)));
for (int i = 0; i < 2; i++){
for (int j = 0; j < 2; j++){
for (int k = 0; k < (1 << 18); k++){
if (!is_distinct[k]){
is_reasonable[i][j][k] = false;
}
if (j == 0 && (Y(wp(k)) == 0 || Y(wp(k)) == 7)){
is_reasonable[i][j][k] = false;
}
if (king_check[k]){
is_reasonable[i][j][k] = false;
}
if (i == 0 && piece_check[j][k]){
is_reasonable[i][j][k] = false;
}
}
}
}
vector<vector<bool>> can_capture(2, vector<bool>(1 << 18, false));
vector<vector<vector<vector<int>>>> E(2, vector<vector<vector<int>>>(2, vector<vector<int>>(1 << 18)));
for (int i = 0; i < 2; i++){
for (int j = 0; j < 2; j++){
for (int k = 0; k < (1 << 18); k++){
int id = (j << 18) | k;
if (is_reasonable[i][j][k]){
if (i == 0){
for (int l = 0; l < 8; l++){
int x = X(wk(k)) + dx[l];
int y = Y(wk(k)) + dy[l];
if (in_grid(x, y)){
int k2 = board(piece(x, y), wp(k), bk(k));
if (is_reasonable[1][j][k2]){
E[1][j][k2].push_back(id);
}
}
}
}
if (i == 0 && j == 0){
int y = Y(wp(k));
for (int y2 = y + 1; y2 <= min(6, max(y + 2, 3)); y2++){
int k2 = board(wk(k), piece(X(wp(k)), y2), bk(k));
if (is_reasonable[1][0][k2]){
E[1][0][k2].push_back(id);
}
}
if (y == 6){
int k2 = board(wk(k), piece(X(wp(k)), 7), bk(k));
if (is_reasonable[1][1][k2]){
E[1][1][k2].push_back(id);
}
}
}
if (i == 0 && j == 1){
for (int l = 0; l < 8; l++){
int x = X(wp(k));
int y = Y(wp(k));
while (true){
x += dx[l];
y += dy[l];
if (!in_grid(x, y)){
break;
}
if (piece(x, y) == wk(k) || piece(x, y) == bk(k)){
break;
}
int k2 = board(wk(k), piece(x, y), bk(k));
if (is_reasonable[1][1][k2]){
E[1][1][k2].push_back(id);
}
}
}
}
if (i == 1){
for (int l = 0; l < 8; l++){
int x = X(bk(k)) + dx[l];
int y = Y(bk(k)) + dy[l];
if (in_grid(x, y)){
int k2 = board(wk(k), wp(k), piece(x, y));
if (is_reasonable[0][j][k2]){
E[0][j][k2].push_back(id);
}
if (wp(k) == piece(x, y) && !king_check[k2]){
can_capture[j][k] = true;
}
}
}
}
}
}
}
}
vector<vector<vector<int>>> deg(2, vector<vector<int>>(2, vector<int>(1 << 18, 0)));
for (int i = 0; i < 2; i++){
for (int j = 0; j < 2; j++){
for (int k = 0; k < (1 << 18); k++){
for (int l : E[i][j][k]){
deg[i ^ 1][l >> 18][l & ((1 << 18) - 1)]++;
}
}
}
}
for (int i = 0; i < 2; i++){
for (int j = 0; j < (1 << 18); j++){
if (can_capture[i][j]){
deg[1][i][j]++;
}
}
}
vector<vector<vector<bool>>> dp(2, vector<vector<bool>>(2, vector<bool>(1 << 18, false)));
queue<tuple<int, int, int>> Q;
for (int i = 0; i < 2; i++){
for (int j = 0; j < (1 << 18); j++){
if (is_checkmate[i][j]){
dp[1][i][j] = true;
Q.push(make_tuple(1, i, j));
}
}
}
while (!Q.empty()){
int t = get<0>(Q.front());
int p = get<1>(Q.front());
int b = get<2>(Q.front());
Q.pop();
for (int x : E[t][p][b]){
int p2 = x >> 18;
int b2 = x & ((1 << 18) - 1);
if (t == 0 && is_stalemate[p2][b2]){
continue;
}
if (t == 0){
deg[1][p2][b2]--;
if (deg[1][p2][b2] == 0){
dp[1][p2][b2] = true;
Q.push(make_tuple(1, p2, b2));
}
}
if (t == 1 && !dp[0][p2][b2]){
dp[0][p2][b2] = true;
Q.push(make_tuple(0, p2, b2));
}
}
}
int t;
cin >> t;
for (int i = 0; i < t; i++){
string WK, WP, BK, T;
cin >> WK >> WP >> BK >> T;
int turn = (T == "w" ? 0 : 1);
int b = board(piece(WK[0] - 'a', WK[1] - '1'), piece(WP[0] - 'a', WP[1] - '1'), piece(BK[0] - 'a', BK[1] - '1'));
if (dp[turn][0][b]){
cout << "Win" << '\n';
} else {
cout << "Draw" << '\n';
}
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 297ms
memory: 85144kb
input:
6 a2 d7 e7 w b6 d7 e7 b b6 d7 e7 w b5 a2 b2 w a6 a2 a4 b g6 g7 h8 b
output:
Draw Draw Win Win Draw Draw
result:
ok 6 lines
Test #2:
score: -100
Wrong Answer
time: 330ms
memory: 84952kb
input:
332912 h8 h7 f8 b h8 h7 f8 w h8 h7 e8 b h8 h7 e8 w h8 h7 d8 b h8 h7 d8 w h8 h7 c8 b h8 h7 c8 w h8 h7 b8 b h8 h7 b8 w h8 h7 a8 b h8 h7 a8 w h8 h7 f7 b h8 h7 f7 w h8 h7 e7 b h8 h7 e7 w h8 h7 d7 b h8 h7 d7 w h8 h7 c7 b h8 h7 c7 w h8 h7 b7 b h8 h7 b7 w h8 h7 a7 b h8 h7 a7 w h8 h7 h6 b h8 h7 h6 w h8 h7 g...
output:
Draw Draw Draw Win Win Win Win Win Win Win Win Win Draw Draw Draw Win Win Win Win Win Win Win Win Win Win Win Draw Win Draw Win Draw Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win Win...
result:
wrong answer 10393rd lines differ - expected: 'Win', found: 'Draw'