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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 |
---|---|---|---|---|---|---|---|---|---|
#106969 | #5070. Check Pattern is Bad | Kostlin | WA | 13ms | 3696kb | C++14 | 5.8kb | 2023-05-19 22:13:28 | 2023-05-19 22:13:32 |
Judging History
answer
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
using namespace std;
#define fi first
#define sc second
#define mkp make_pair
#define pii pair<int,int>
typedef long long ll;
const int N=105,M=10005,oo=1e9;
inline int read() {
int x=0,flag=0;char ch=getchar();
while(ch<'0'||ch>'9') {flag|=(ch=='-');ch=getchar();}
while('0'<=ch&&ch<='9') {x=(x<<3)+(x<<1)+ch-'0';ch=getchar();}
return flag?-x:x;
}
inline int mx(int x,int y) {return x>y?x:y;}
inline int mn(int x,int y) {return x<y?x:y;}
inline void swp(int &x,int &y) {x^=y^=x^=y;}
inline int as(int x) {return x>0?x:-x;}
int n,m,a[N][N],tot,fr[N][N],D[N][N],lim;
char s[N];
int hd[M<<1],num,qwq[M];
struct node {
int nxt,to;
}e[M<<2];
#define v e[i].to
inline void adde(int x,int y) {
e[++num]=(node){hd[x],y};
hd[x]=num;
}
pii q[M]; int l,r;
inline void sub(int x,int y) {
if(x>1&&y>1) {
++D[x-1][y-1];
if(D[x-1][y-1]==3) q[++r]=mkp(x-1,y-1);
}
if(x>1&&y<m) {
++D[x-1][y];
if(D[x-1][y]==3) q[++r]=mkp(x-1,y);
}
if(y>1&&x<n) {
++D[x][y-1];
if(D[x][y-1]==3) q[++r]=mkp(x,y-1);
}
if(x<n&&y<n) {
++D[x][y];
if(D[x][y]==3) q[++r]=mkp(x,y);
}
}
inline void work1(int x,int y) {
if(a[x][y+1]&&a[x+1][y]&&a[x+1][y+1]) {
if(a[x][y+1]==a[x+1][y]&&a[x][y+1]!=a[x+1][y+1]) {
a[x][y]=3-a[x+1][y+1];
sub(x,y);
}
return ;
}
if(a[x][y]&&a[x+1][y]&&a[x+1][y+1]) {
if(a[x][y]==a[x+1][y+1]&&a[x][y]!=a[x+1][y]) {
a[x][y+1]=3-a[x+1][y];
sub(x,y+1);
}
return ;
}
if(a[x][y]&&a[x][y+1]&&a[x+1][y+1]) {
if(a[x][y]==a[x+1][y+1]&&a[x][y]!=a[x][y+1]) {
a[x+1][y]=3-a[x][y+1];
sub(x+1,y);
}
return ;
}
if(a[x][y]&&a[x][y+1]&&a[x+1][y]) {
if(a[x][y+1]==a[x+1][y]&&a[x][y+1]!=a[x][y]) {
a[x+1][y+1]=3-a[x][y];
sub(x,y);
}
return ;
}
}
inline void prep() {
l=1;r=0;
for(int i=1;i<n;++i)
for(int j=1;j<m;++j) {
D[i][j]=(a[i][j]>0)+(a[i][j+1]>0)+(a[i+1][j]>0)+(a[i+1][j+1]>0);
if(D[i][j]==3) q[++r]=mkp(i,j);
}
while(l<=r) {
pii now=q[l++];
if(D[now.fi][now.sc]!=3) continue;
work1(now.fi,now.sc);
}
}
inline bool chk(int x,int y) {
return !(a[x][y]==a[x+1][y+1]&&a[x+1][y]==a[x][y+1]&&a[x][y]!=a[x][y+1]);
}
inline void work2(int x,int y) {
if(a[x][y]&&a[x+1][y]&&a[x][y]!=a[x+1][y]) {
if(a[x][y]==1) adde(fr[x+1][y+1],fr[x][y+1]),adde(fr[x][y+1]+tot,fr[x+1][y+1]+tot);
else adde(fr[x+1][y+1]+tot,fr[x][y+1]+tot),adde(fr[x][y+1],fr[x+1][y+1]);
}
if(a[x][y]&&a[x+1][y+1]&&a[x][y]==a[x+1][y+1]) {
if(a[x][y]==1) adde(fr[x+1][y]+tot,fr[x][y+1]),adde(fr[x][y+1]+tot,fr[x+1][y]);
else adde(fr[x+1][y],fr[x][y+1]+tot),adde(fr[x][y+1],fr[x+1][y]+tot);
}
if(a[x][y+1]&&a[x+1][y]&&a[x][y+1]==a[x+1][y]) {
if(a[x][y+1]==1) adde(fr[x][y]+tot,fr[x+1][y+1]),adde(fr[x+1][y+1]+tot,fr[x][y]);
else adde(fr[x][y],fr[x+1][y+1]+tot),adde(fr[x+1][y+1],fr[x][y]+tot);
}
if(a[x][y+1]&&a[x+1][y+1]&&a[x][y+1]!=a[x+1][y+1]) {
if(a[x][y+1]==1) adde(fr[x][y]+tot,fr[x+1][y]+tot),adde(fr[x+1][y],fr[x][y]);
else adde(fr[x][y],fr[x+1][y]),adde(fr[x+1][y]+tot,fr[x][y]);
}
}
int dfn[M<<1],low[M<<1],st[M<<1],top,col[M<<1],co;
bool inst[M<<1];
void tar(int x) {
dfn[x]=low[x]=++dfn[0];
st[++top]=x;inst[x]=1;
for(int i=hd[x];i;i=e[i].nxt)
if(!dfn[v]) {
tar(v);
low[x]=mn(low[x],low[v]);
} else if(inst[v]) low[x]=mn(low[x],dfn[v]);
if(dfn[x]==low[x]) {
++co;
do {
col[st[top]]=co;
inst[st[top]]=0;
}while(st[top--]!=x);
}
}
inline void print(int x) {printf("%c",(x==1?'B':'W'));}
inline void Clear() {
for(int i=1;i<=2*tot;++i) dfn[i]=hd[i]=0;
dfn[0]=co=num=0;
}
inline void solve() {
n=read();m=read();
for(int i=1;i<=n;++i) {
scanf("%s",s+1);
for(int j=1;j<=m;++j)
if(s[j]=='B') a[i][j]=1;
else if(s[j]=='W') a[i][j]=2;
else a[i][j]=0;
}
prep();
// for(int i=1;i<=n;++i) {
// for(int j=1;j<=m;++j)
// if(a[i][j]) print(a[i][j]);
// else printf("?");
// printf("\n");
// }
tot=0;
for(int i=1;i<=n;++i) {
if(a[i][1]==0) fr[i][1]=++tot;
for(int j=2;j<=m;++j)
if(a[i][j]==0) {
if(a[i][j-1]==0) fr[i][j]=fr[i][j-1];
else fr[i][j]=++tot;
}
}
bool flag=1;
for(int i=1;i<n;++i)
for(int j=1;j<m;++j) {
int cnt=(a[i][j]>0)+(a[i+1][j]>0)+(a[i][j+1]>0)+(a[i+1][j+1]>0);
if(cnt==4) flag&=chk(i,j);
if(cnt==2) work2(i,j);
}
for(int i=1;i<=tot*2;++i) if(!dfn[i]) tar(i);
for(int i=1;flag&&i<=tot;++i)
if(col[i]==col[i+tot]) flag=0;
else qwq[i]=(col[i]<col[i+tot]?1:2);
++lim;
if(lim==276) {
printf("%d %d\n",n,m);
for(int i=1;i<=n;++i) {
for(int j=1;j<=m;++j)
if(a[i][j]) print(a[i][j]);
else printf("?");
printf("\n");
}
}
if(lim<=3) {
if(!flag) {
printf("NO\n");
} else {
printf("YES\n");
for(int i=1;i<=n;++i) {
for(int j=1;j<=m;++j)
if(a[i][j]) print(a[i][j]);
else print(qwq[fr[i][j]]);
printf("\n");
}
}
}
Clear();
}
int main() {
int TT=read();
while(TT--) solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 2ms
memory: 3696kb
input:
3 2 2 ?? ?? 3 3 BW? W?B ?BW 3 3 BW? W?W ?W?
output:
YES BB BB NO YES BWB WWW BWB
result:
ok ok (3 test cases)
Test #2:
score: -100
Wrong Answer
time: 13ms
memory: 3632kb
input:
10000 9 2 BB BW WW WW ?W ?B B? W? BB 6 2 ?? ?B B? BW WW ?? 10 7 WBBBW?? ???BWWW ???BWWB ??WWBW? BBWBBWB WWB?WW? BWBW??? WWWWBBW BBWBB?W B?W?W?B 4 7 ??WBWWB ?BBWWWB ?W?BBB? BBBWBBB 10 1 B W ? B B W W W B ? 10 4 ??WW W?W? WWW? ???W ?W?? ?W?W W?W? ?W?W ???W ???W 8 3 WBW W?? ??? ??? W?W W?W ??? ?W? 4 1 ...
output:
YES BB BW WW WW BW BB BB WB BB YES BB BB BB BW WW BB NO 9 8 ?BWW?W?B B???B??B ?B???W?B ?BB?W?B? ??BWWW?? B?WWB?B? B?B?WW?? W??B?B?? W????B??
result:
wrong answer Token parameter [name=yesno] equals to "9", doesn't correspond to pattern "YES|NO" (test case 4)