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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#599693#3223. Cellular Automatondongyc666WA 0ms4120kbC++141.5kb2024-09-29 09:09:062024-09-29 09:09:06

Judging History

This is the latest submission verdict.

  • [2024-09-29 09:09:06]
  • Judged
  • Verdict: WA
  • Time: 0ms
  • Memory: 4120kb
  • [2024-09-29 09:09:06]
  • Submitted

answer

#include<bits/stdc++.h>
using namespace std;
const int NR=3000;
int n,dis[NR],vis[NR],st[NR*15],L,R;
char str[NR],ans[NR];
#define pii pair<int,int>
#define fi first
#define se second
#define mkp make_pair
#define pb emplace_back
vector<pii>g[NR];

bool SPFA(){
	memset(dis,999999,sizeof(dis));
	memset(vis,0,sizeof(vis));
	L=R=1;st[1]=0;dis[0]=0;
	while(L<=R){
		int x=st[L];L++;
		if(vis[x]>4*n)return 0;
		vis[x]++;
//		printf("x:%d %d\n",x,dis[x]);
		for(auto lcy:g[x])
			if(dis[lcy.fi]>dis[x]+lcy.se){
				dis[lcy.fi]=dis[x]+lcy.se;
				st[++R]=lcy.fi;
			}
	}
	return 1;
}
bool check(int k){
	for(int i=0;i<(1<<(2*n));i++)g[i].clear();
//	printf("check:%d %s\n",k,ans);
	for(int s=0;s<(1<<(2*n+1));s++){
		int x=s>>1,y=s&((1<<(2*n))-1);
		if(s<=k){
			int val=(ans[s]-'0')-(s&1);
			g[x].pb(mkp(y,val));g[y].pb(mkp(x,-val));
		}
		else{
			if(s&1)g[x].pb(mkp(y,0)),g[y].pb(mkp(x,1));
			else g[x].pb(mkp(y,1)),g[y].pb(mkp(x,0));
		}
	}
	if(SPFA())return 1;
	return 0;
}
bool Check(int x){
	ans[x]='0';
	return check(x);
}
int main(){
	cin>>n;
	scanf("%s",str);
	if(!check(-1)){
		puts("no");
		return 0;
	}
	bool ok=0;
	for(int i=0;i<(1<<(2*n+1));i++){
		if(ok){
			if(Check(i))ans[i]='0';
			else ans[i]='1';
		}
		else{
			if(str[i]=='1'){
				ans[i]='1';
				if(!check(i)){
					puts("no");
					return 0;
				}
			}
			else{
				if(Check(i))ans[i]='0';
				else ans[i]='1',ok=1;
			}
		}
	}
	printf("%s\n",ans);
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3832kb

input:

1
11111111

output:

no

result:

ok single line: 'no'

Test #2:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

1
11111101

output:

no

result:

ok single line: 'no'

Test #3:

score: 0
Accepted
time: 0ms
memory: 4056kb

input:

1
11001011

output:

no

result:

ok single line: 'no'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3832kb

input:

1
10111110

output:

no

result:

ok single line: 'no'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3700kb

input:

1
10000010

output:

no

result:

ok single line: 'no'

Test #6:

score: 0
Accepted
time: 0ms
memory: 3924kb

input:

1
00100011

output:

00110011

result:

ok single line: '00110011'

Test #7:

score: 0
Accepted
time: 0ms
memory: 4056kb

input:

1
01000001

output:

01000111

result:

ok single line: '01000111'

Test #8:

score: 0
Accepted
time: 0ms
memory: 4120kb

input:

1
00000100

output:

00001111

result:

ok single line: '00001111'

Test #9:

score: -100
Wrong Answer
time: 0ms
memory: 3756kb

input:

1
01001000

output:

no

result:

wrong answer 1st lines differ - expected: '01010101', found: 'no'