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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#173727 | #7180. Forward-Capturing Pawns | ucup-team180# | AC ✓ | 347ms | 84964kb | C++17 | 8.1kb | 2023-09-10 01:29:10 | 2023-09-10 01:29:10 |
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(wp(i)) == 1 && Y(bk(i)) == 3){
if (!(X(wk(i)) == X(wp(i)) && Y(wk(i)) == Y(wp(i)) + 1)){
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[j2]){
if (!king_check[j2] && !piece_check[i][j2]){
ok = false;
}
}
if (wp(j) == piece(x, y) && !king_check[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 + 1, 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));
}
}
}
vector<int> corner;
corner.push_back(board(piece(0, 4), piece(2, 6), piece(0, 6)));
corner.push_back(board(piece(7, 4), piece(5, 6), piece(7, 6)));
corner.push_back(board(piece(0, 3), piece(1, 6), piece(0, 5)));
corner.push_back(board(piece(1, 3), piece(1, 6), piece(0, 5)));
corner.push_back(board(piece(7, 3), piece(6, 6), piece(7, 5)));
corner.push_back(board(piece(6, 3), piece(6, 6), piece(7, 5)));
for (int x : corner){
dp[0][0][x] = true;
Q.push(make_tuple(0, 0, x));
}
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';
}
}
}
这程序好像有点Bug,我给组数据试试?
详细
Test #1:
score: 100
Accepted
time: 303ms
memory: 84964kb
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: 0
Accepted
time: 347ms
memory: 84672kb
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:
ok 332912 lines
Extra Test:
score: 0
Extra Test Passed