QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#123211 | #1811. How to Move the Beans | EastKing | WA | 9ms | 12372kb | C++17 | 3.2kb | 2023-07-11 21:13:45 | 2023-07-11 21:13:46 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
char s[1005][1005];
int R[1005][1005],L[1005][1005];
int STL[1005][11][4];
int STR[1005][11][4];
int dp[1005][1005];
int mex(int x=4,int y=4,int z=4){
for(int i=0;i<=4;i++){
if(x!=i&&y!=i&&z!=i)return i;
}
}
int main(){
int H,W;
scanf("%d%d",&H,&W);
for(int i=0;i<H;i++){
scanf("%s",s[i]);
}
for(int j=0;j<W;j++)s[H][j]='#';
for(int i=0;i<H;i++){
for(int j=0;j<2*W;j++){
if(s[i][j%W]!='#')L[i][j%W]=max(1,L[i][(j+W-1)%W]+1);
else L[i][j%W]=0;
if(L[i][j%W]>W)L[i][j%W]=W;
}
for(int j=2*W-1;j>=0;j--){
if(s[i][j%W]!='#')R[i][j%W]=max(1,R[i][(j+1)%W]+1);
else R[i][j%W]=0;
if(R[i][j%W]>W)R[i][j%W]=W;
}
}
int ans=0;
for(int i=H-1;i>=0;i--){
{
memset(STL,0,sizeof(STL));
memset(STR,0,sizeof(STR));
for(int j=0;j<W;j++){
for(int l=0;l<=3;l++){
if(s[i+1][j]=='#'){
STL[j][0][l]=mex(l);
STR[j][0][l]=mex(l);
}else{
STL[j][0][l]=mex(dp[i+1][j],l);
STR[j][0][l]=mex(dp[i+1][j],l);
}
}
}
for(int k=1;k<=10;k++){
for(int j=0;j<W;j++){
for(int l=0;l<=3;l++){
STL[j][k][l]=STL[(j-(1<<(k-1))+W)%W][k-1][STL[j][k-1][l]];
STR[j][k][l]=STR[(j+(1<<(k-1))+W)%W][k-1][STR[j][k-1][l]];
}
}
}
//calc dp[i][j] len R[i][j]-1
auto calcL=[&](int dis,int len){
int ans=3;
for(int j=10;j>=0;j--){
if((len>>j)&1){
ans=STL[dis][j][ans];
dis=(dis-(1<<j)+W)%W;
}
}
return ans;
};
auto calcR=[&](int dis,int len){
int ans=3;
for(int j=10;j>=0;j--){
if((len>>j)&1){
ans=STR[dis][j][ans];
dis=(dis+(1<<j)+W)%W;
}
}
return ans;
};
for(int j=0;j<W;j++){
if(s[i][j]!='#'){
int d1=4,d2=4,d3=4;
if(s[i+1][j]!='#'){
d1=dp[i+1][j];
}
if(R[i][j]>1){
d2=calcL((i+R[i][j]-1+W)%W,R[i][j]-1);
}
if(L[i][j]>1){
d3=calcR((i-L[i][j]+1+W)%W,L[i][j]-1);
}
dp[i][j]=mex(d1,d2,d3);
}
//printf("dp[%d][%d]=%d\n",i,j,dp[i][j]);
}
}
}
for(int i=0;i<H;i++){
for(int j=0;j<W;j++){
if(s[i][j]=='B')ans^=dp[i][j];
}
}
if(ans==0)printf("Bob");
else printf("Alice");
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 8060kb
input:
2 3 B.# #..
output:
Alice
result:
ok "Alice"
Test #2:
score: 0
Accepted
time: 1ms
memory: 4100kb
input:
1 1 B
output:
Bob
result:
ok "Bob"
Test #3:
score: 0
Accepted
time: 0ms
memory: 7668kb
input:
1 3 B#.
output:
Alice
result:
ok "Alice"
Test #4:
score: 0
Accepted
time: 2ms
memory: 7748kb
input:
5 18 #.#..#.#..###..### ##...#.#..#.#..#.. #....#.#..###..#.. ##...#.#..#....#.. #.#..###..#....###
output:
Bob
result:
ok "Bob"
Test #5:
score: 0
Accepted
time: 8ms
memory: 12372kb
input:
293 249 #B..B..BBB..B.B.B...#BBB..B#B.BBB.#B##B.BB.B.##B#B.BB..B.#B#BB.BB##B#BB#...B..BB..B.B##B.B#B.#.##..B.#..BBBB#.BB..#.BBB#B##BB....B.##B..#...B#..B.BB#B.#...B#.BB.#B#.B...BBB.B.B..B....##.B..B##.BB#B.B.BBB.B#B..#.B.B#.B##..B#.##BB.#BB#.BB.#.B..BB.BB.B BB.B.#.B#BB.B.B..B.###.B...BB.##.B...B#BB....
output:
Alice
result:
ok "Alice"
Test #6:
score: 0
Accepted
time: 2ms
memory: 7000kb
input:
75 13 BBB.B.BB.B.#B BB.##...B##BB ..#.B....#.B. BBB..#...B#BB #B#.##B..BB.. #B..BBBB.B..# #B##.BBBBB.B# BBB.B..#B#B.. .BBB####.##BB .B##...#.#.#. #.BB#..B.B.B. BB#BB.BBB..BB B.#...#.BBBBB ..#B.BBBB..B# BB..B..#..... ..B..BBBB.B#. .B.B##B.#B.## BBBB#...#..B# B.BB..BBB#B.B .#B#B...BB.BB #.B...BB...B. ...
output:
Alice
result:
ok "Alice"
Test #7:
score: 0
Accepted
time: 1ms
memory: 8052kb
input:
35 38 #.#..B.B.#.BB#.B.B.B..##..B#B###BBB##. .#.#.B#.#BBB..B..BB.#..BB..##B......#B B.B#..B..B...##B#B..#.##.#..B.#..B##BB #.B.B..#..B#.#.B#B##B.BBB..#.B...B..#. B#.#.BBB..B.BB.B..BBBBB##B..BB#.B#.BB. B##.B#...B.B.BB.BBB..#BBB.#..#B#.B..#B B....B#B.#.BBB.B#BB...##B#...B..BB.BB. ..###.#.B#....#.....#...
output:
Alice
result:
ok "Alice"
Test #8:
score: 0
Accepted
time: 2ms
memory: 4420kb
input:
36 106 BB.B..B.BBBB.BB..BB..BB..BB...BB.B..B.B..BBBB.B.BB..B.B..BB..BBBB.B.B.BBBB..B.BBBBBBBBBBBBBBB.BB.B.BBB..BB #BBB.BBB#..#.BB...###B.B#.B...B.#.BBBB.B..B..#B.#B#BB##.BB.#B..B#B...B....B#B#.#B.B.B.BB#..B#B#.#.#B###.B. B.BBB.BBBBB.BBB....BB..B.BBBB.BBB.BBB.BBB.B.B.BBB.B...B.B.BBBBB.BBB....BB.BBB.B...
output:
Alice
result:
ok "Alice"
Test #9:
score: 0
Accepted
time: 9ms
memory: 6936kb
input:
245 239 .BBB.BB.B.BBB..B.BB.BBBBBB..B.BBB.B.BBBBBBBBB..B..BB.B.B.BB..B.BB...B.BB.B.BB..BBB..BB..BB.BBB.BBB.BBBBB.BBBB.BB.BBBB...BBB.B..BBBBBBB..BB..B.B.B..BBBBB...BB..BBB...BBB.B..BB.BB.B.BB.BBB..B.B.BBBB.BBBBB.BBB.BBBB.BB...B.B.B...BBB.BBB.BBB..B B#.#BB..#BB.BBB#..BB..#.B#.##B.BBB###..B#B...BB..#.#...
output:
Bob
result:
ok "Bob"
Test #10:
score: -100
Wrong Answer
time: 2ms
memory: 11580kb
input:
288 94 B....BB....BB.BBB.BBBB..B.B.B.....BBBB.B..BBBBBB.B..BBBBBBB....BBB.BBBBB.B.BBBB..B..B.B.BBB..B BB#.#B#BBB.B#BB..BBB.B#BB#B#BB#BBBBBB####.B.B...BBB.BB.B.#.B.B.B.#.B.B.#.#..B..BB..B#..B.#.... BBBBBBB...B.BB.B..BB..BBBB.BBBBB.BBBB..BBBBBB.BB....B.BBBB.BB.BBB..B.BBBB.B.BBBBBB..BBB.BBB.B. .B....B....
output:
Bob
result:
wrong answer 1st words differ - expected: 'Alice', found: 'Bob'