QOJ.ac
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 |
---|---|---|---|---|---|---|---|---|---|
#270956 | #7733. Cool, It’s Yesterday Four Times More | ucup-team134# | WA | 1ms | 7940kb | C++14 | 1.4kb | 2023-12-01 18:53:05 | 2023-12-01 18:53:07 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ull uint64_t
mt19937_64 rng(time(0));
const int N=1050;
char s[N][N];
ull hsh[N][N];
vector<pair<int,int>> pts;
bool was[N][N];
int n,m;
int mv[4][2]={{1,0},{0,1},{-1,0},{0,-1}};
void DFS(int x,int y){
pts.pb({x,y});
was[x][y]=true;
for(int i=0;i<4;i++){
int X=x+mv[i][0];
int Y=y+mv[i][1];
if(X>=1 && X<=n && Y>=1 && Y<=m && s[X][Y]=='.' && !was[X][Y]){
DFS(X,Y);
}
}
}
int main(){
int t;
scanf("%i",&t);
while(t--){
scanf("%i %i",&n,&m);
for(int i=1;i<=n;i++){
scanf("%s",s[i]+1);
}
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
hsh[i][j]=rng();
}
}
int sz=0;
map<pair<int,ll>,int> cnt;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(s[i][j]=='.' && !was[i][j]){
pts.clear();
DFS(i,j);
ull h=0;
int mnx=n,mny=m;
for(auto p:pts){
mnx=min(mnx,p.first);
mny=min(mny,p.second);
}
for(auto p:pts){
h^=hsh[p.first-mnx][p.second-mny];
}
cnt[{(int)pts.size(),h}]++;
sz=max(sz,(int)pts.size());
}
}
}
int ans=0;
for(auto it:cnt){
if(it.first.first==sz){
if(it.second==1){
ans+=sz;
}
}
}
printf("%i\n",ans);
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
was[i][j]=false;
}
}
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 7940kb
input:
4 2 5 .OO.. O..O. 1 3 O.O 1 3 .O. 2 3 OOO OOO
output:
3 1 0 0
result:
ok 4 lines
Test #2:
score: -100
Wrong Answer
time: 1ms
memory: 3916kb
input:
200 2 4 OOO. OO.. 2 3 OOO .O. 3 3 O.O OOO OO. 4 1 . . O O 1 2 .O 1 1 . 2 5 .OO.. .O.O. 2 1 O O 1 1 O 1 3 .OO 5 1 O O . O . 5 2 O. .. O. .O .. 5 3 ... ... .OO ..O OOO 3 5 ..O.O .O.O. .OO.O 5 2 .O OO O. O. .. 2 1 O O 3 5 .O.OO O...O ..OO. 1 5 ..... 5 1 O . O . . 5 3 OOO OO. .OO OO. O.O 2 1 O . 5 2 O. ...
output:
3 0 0 2 1 1 3 0 0 1 0 4 9 4 4 0 6 5 2 0 1 6 4 5 2 0 0 5 3 3 1 4 1 0 4 5 2 3 7 3 0 6 2 2 2 0 4 6 6 3 3 2 3 3 2 1 0 3 3 4 4 2 2 0 7 6 4 8 5 3 2 5 2 1 2 1 4 0 0 2 5 1 4 6 6 1 6 2 2 3 4 5 2 1 0 1 9 3 4 11 0 3 2 1 0 0 4 3 1 4 3 8 3 0 3 6 2 3 1 3 3 4 0 2 11 2 2 4 0 4 4 6 2 1 2 3 0 5 0 16 4 3 2 6 0 8 3 3 1...
result:
wrong answer 12th lines differ - expected: '7', found: '4'