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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
#505202#2833. HamiltonxiaohuzaiAC ✓123ms7760kbC++142.8kb2024-08-04 21:52:092024-08-04 21:52:10

Judging History

你现在查看的是最新测评结果

  • [2024-08-04 21:52:10]
  • 评测
  • 测评结果:AC
  • 用时:123ms
  • 内存:7760kb
  • [2024-08-04 21:52:09]
  • 提交

answer

#include<bits/stdc++.h>
#define gt getchar
#define pt putchar
#define fst first
#define scd second
typedef long long ll;
using namespace std;
const int N=2005;
typedef pair<int,int> pii;
inline bool __(char ch){return ch>=48&&ch<=57;}
template<class T> inline void read(T &x){
	x=0;bool sgn=0;char ch=gt();
	while(!__(ch)&&ch!=EOF) sgn|=(ch=='-'),ch=gt();
	while(__(ch)) x=(x<<1)+(x<<3)+(ch&15),ch=gt();
	if(sgn) x=-x;
}
template<class T,class ...T1> inline void read(T &x,T1 &...x1){
	read(x);
	read(x1...);
}
template<class T> inline void print(T x){
	static char st[70];short top=0;
	if(x<0) pt('-');
 	do{st[++top]=x>=0?(x%10+48):(-(x%10)+48),x/=10;}while(x);
    while(top) pt(st[top--]);
}
template<class T> inline void printsp(T x){
	print(x);
	putchar(' ');
}
template<class T> inline void println(T x){
	print(x);
	putchar('\n');
}
bool a[N][N];
int nxt[N],st,pre[N];
map<int,int>M; 
void solve(int n){
	M.clear();
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			char ch;cin>>ch;
			a[i][j]=ch-'0';
		}
	}
	for(int i=0;i<=n;i++)nxt[i]=0,pre[i]=0;
	int nn=1,st=1;
	nxt[1]=2,nxt[2]=1;
	pre[2]=1;pre[1]=2; 
	for(int i=3;i<=n;i++){
		if(nn==1){ 
			nxt[i]=nxt[st];pre[nxt[st]]=i;
			nxt[st]=i;pre[i]=st;
		//	for(int j=1;j<=n;j++)cout<<nxt[j]<<" "<<a[j][nxt[j]]<<endl;
			if(a[i][nxt[i]]!=a[st][i]||a[st][i]!=a[pre[st]][st]||a[i][nxt[i]]!=a[nxt[i]][nxt[nxt[i]]])nn=2; 
		}
		else{
			M.clear();
			int nw=st,ck=0,ckk=0; 
			while(nw!=st||ckk==0){ 
				ckk=1;
				if(a[pre[nw]][nw]==0&&a[nw][nxt[nw]]==1){
					if(a[i][nw]==1){
						nxt[pre[nw]]=i,pre[i]=pre[nw];
						nxt[i]=nw,pre[nw]=i;
					}
					else{
						pre[nxt[nw]]=i,nxt[i]=nxt[nw];
						nxt[nw]=i,pre[i]=nw;	
					}
					ck=1;
					break;
				}
				if(a[pre[nw]][nw]==1&&a[nw][nxt[nw]]==0){
				//	puts("!");
					if(a[i][nw]==1){
						pre[nxt[nw]]=i,nxt[i]=nxt[nw];
						nxt[nw]=i,pre[i]=nw;
					}
					else{
						nxt[pre[nw]]=i,pre[i]=pre[nw];
						nxt[i]=nw,pre[nw]=i;	
					}
					ck=1;
					break;
				}
				assert(nw!=0);
				nw=nxt[nw];
			} 
			//	for(int j=1;j<=n;j++)cout<<nxt[j]<<" "<<a[j][nxt[j]]<<endl;
			nw=st,ckk=0; 
			while(nw!=st||ckk==0){ 
			//	cout<<nw<<endl;
				ckk=1;
				M[a[nw][nxt[nw]]]=1;
				nw=nxt[nw];
			} 
			if((!M[1])||(!M[0]))nn=1;
			//assert(ck!=0);
		}
	}
//	for(int i=1;i<=n;i++)cout<<nxt[i]<<" "<<a[i][nxt[i]]<<endl;
	for(int i=1;i<=n;i++){	
		int ck=0,ck1=0,nw=-1;
		st=i; 
		while(st!=i||nw==-1){
			nw=0;
			if(ck&&a[st][nxt[st]]==0){ck1=-1;break;}
			if(a[st][nxt[st]]==1)ck=1;
			st=nxt[st]; 
		} 
		if(ck1==0){
			st=i;nw=-1;
			while(st!=i||nw==-1){
				nw=0;
				printsp(st);
				st=nxt[st];
			}
			cout<<endl;
			return;
		}
	}
	puts("-1");
	//assert(0);
} 
int main(){
	int n;
	while(scanf("%d",&n)!=EOF){
	//cin>>n;
		solve(n);
	}
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3712kb

input:

3
001
000
100
4
0000
0000
0000
0000

output:

3 2 1 
1 4 3 2 

result:

ok 2 cases.

Test #2:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

3
000
000
000
3
010
100
000
3
011
100
100
3
011
101
110

output:

1 3 2 
1 3 2 
3 2 1 
1 3 2 

result:

ok 4 cases.

Test #3:

score: 0
Accepted
time: 1ms
memory: 5628kb

input:

4
0000
0000
0000
0000
4
0000
0001
0000
0100
4
0100
1010
0100
0000
4
0111
1000
1000
1000
4
0010
0011
1101
0110
4
0111
1011
1100
1100
4
0111
1011
1101
1110
4
0000
0011
0101
0110
4
0101
1010
0100
1000
4
0011
0011
1100
1100
4
0010
0001
1000
0100

output:

1 4 3 2 
1 4 3 2 
2 4 1 3 
4 3 2 1 
2 1 4 3 
4 3 2 1 
1 4 3 2 
2 1 4 3 
4 3 2 1 
1 3 2 4 
1 4 3 2 

result:

ok 11 cases.

Test #4:

score: 0
Accepted
time: 0ms
memory: 3780kb

input:

5
00000
00000
00000
00000
00000
5
00001
00000
00000
00000
10000
5
00010
00010
00000
11000
00000
5
00000
00001
00001
00001
01110
5
00001
00001
00001
00001
11110
5
00101
00100
11011
00100
10100
5
01111
10011
10000
11000
11000
5
00011
00011
00011
11101
11110
5
01101
10111
11001
01001
11110
5
00111
0011...

output:

1 5 4 3 2 
5 4 3 2 1 
1 5 4 3 2 
4 3 2 1 5 
4 3 2 1 5 
2 1 4 5 3 
5 4 3 2 1 
3 2 5 1 4 
4 3 2 1 5 
1 5 3 2 4 
1 5 4 3 2 
5 3 2 1 4 
4 3 2 1 5 
1 5 3 4 2 
3 5 4 2 1 
2 1 4 5 3 
1 5 4 3 2 
5 4 3 2 1 
5 2 4 1 3 
1 3 2 5 4 
3 2 5 1 4 
2 5 1 4 3 
5 4 1 3 2 
3 2 1 4 5 
5 3 2 1 4 
4 1 5 3 2 
4 3 2 1 5 
5 4...

result:

ok 34 cases.

Test #5:

score: 0
Accepted
time: 1ms
memory: 3716kb

input:

6
000000
000000
000000
000000
000000
000000
6
000000
000000
000001
000000
000000
001000
6
010000
100100
000000
010000
000000
000000
6
000100
000000
000100
101010
000100
000000
6
000100
000000
000100
101011
000100
000100
6
001000
001000
110111
001000
001000
001000
6
001100
000100
100100
111011
000100...

output:

1 6 5 4 3 2 
1 6 5 4 3 2 
1 6 3 2 5 4 
3 2 1 5 6 4 
3 2 1 5 6 4 
2 1 4 5 6 3 
6 1 5 3 2 4 
3 2 1 5 6 4 
6 5 4 3 2 1 
2 1 6 5 4 3 
2 1 6 5 4 3 
4 1 6 5 3 2 
5 1 6 4 3 2 
6 5 4 3 2 1 
1 6 5 4 3 2 
1 6 5 4 3 2 
1 5 4 3 2 6 
5 4 3 2 1 6 
1 5 6 3 2 4 
6 5 4 3 2 1 
6 5 4 3 2 1 
6 4 3 2 1 5 
6 4 3 2 1 5 
1...

result:

ok 156 cases.

Test #6:

score: 0
Accepted
time: 1ms
memory: 3768kb

input:

7
0000010
0001011
0001010
0110100
0001001
1110001
0100110
7
0101001
1011000
0101100
1110010
0010010
0001100
1000000
7
0001111
0011001
0100100
1100101
1011000
1000000
1101000
7
0111111
1011101
1101001
1110010
1100010
1001101
1110010
7
0010111
0010001
1101010
0010000
1000011
1010100
1100100
7
0001010
...

output:

1 5 6 4 7 3 2 
2 6 1 5 4 7 3 
2 1 3 6 5 7 4 
7 5 6 4 3 2 1 
2 1 4 7 5 6 3 
2 1 5 6 7 4 3 
2 1 6 7 5 4 3 
1 7 6 3 4 5 2 
7 6 5 2 4 1 3 
6 3 2 5 1 4 7 
7 6 4 3 2 5 1 
2 4 1 7 3 6 5 
2 1 4 3 5 6 7 
7 6 5 2 4 1 3 
5 7 6 2 1 3 4 
7 6 5 4 3 2 1 
1 7 4 3 5 6 2 
7 5 3 4 2 1 6 
7 1 6 5 3 2 4 
4 7 6 5 3 2 1 
...

result:

ok 286 cases.

Test #7:

score: 0
Accepted
time: 1ms
memory: 3636kb

input:

5
01000
10100
01010
00100
00000
9
001101110
001010001
110100110
101010000
010100011
100000000
101000000
101010001
010010010
4
0000
0011
0101
0110
8
00100101
00101100
11000011
00001111
01010101
11011000
00110000
10111000
9
000000001
001101000
010000100
010000111
000000000
010000111
001101010
00010110...

output:

1 3 5 2 4 
9 7 6 3 2 5 4 1 8 
2 1 4 3 
2 1 4 3 6 7 8 5 
6 3 4 5 2 1 9 8 7 
1 3 2 4 
1 6 5 3 2 4 
6 3 5 2 4 1 
6 5 3 2 1 4 7 
4 6 1 7 5 3 2 
10 8 5 4 3 2 1 7 6 9 
10 5 3 2 4 1 6 7 8 9 
1 5 4 6 3 2 
8 7 6 3 5 2 4 1 
9 8 5 3 2 4 1 7 6 
2 1 3 
1 3 2 
6 5 4 3 2 1 
4 1 5 6 7 3 2 
1 3 2 
2 1 3 
3 2 1 4 5 
...

result:

ok 322 cases.

Test #8:

score: 0
Accepted
time: 1ms
memory: 3776kb

input:

10
0010001000
0010011001
1101101001
0010111000
0011000110
0101001100
1111010001
0000110011
0000100101
0110001110
10
0000000010
0000001001
0000001101
0000100000
0001010111
0000101011
0110010100
0010101000
1000110000
0110110000
10
0110010111
1011111110
1100101010
0100001101
0110001111
1100001010
01111...

output:

2 1 5 7 10 9 8 6 4 3 
4 3 2 1 8 9 7 10 6 5 
5 1 4 3 8 7 10 9 6 2 
4 10 9 8 6 7 3 2 5 1 
2 1 4 5 9 10 8 7 6 3 
10 8 9 4 3 2 1 5 6 7 
1 10 9 8 7 6 5 4 3 2 
3 4 2 1 6 7 10 9 8 5 
2 1 3 4 6 7 8 9 10 5 
1 10 7 8 6 9 4 5 3 2 
6 1 5 4 3 10 8 9 7 2 
7 10 9 8 5 3 2 4 1 6 
3 2 1 6 7 5 8 4 9 10 
2 4 1 5 6 7 9 ...

result:

ok 200 cases.

Test #9:

score: 0
Accepted
time: 1ms
memory: 3708kb

input:

10
0110101100
1010100111
1101100101
0010111010
1111001010
0001000000
1001100111
1110001001
0101101000
0110001100
10
0111110111
1001111100
1001100100
1110101111
1111001010
1100001000
0101110100
1111001010
1001100100
1001000000
10
0100000111
1011111001
0100001111
0100100110
0101011100
0100100110
01101...

output:

10 9 8 6 5 4 3 2 1 7 
8 10 9 6 7 5 3 4 2 1 
4 1 10 3 9 6 8 7 5 2 
6 1 5 4 7 8 10 9 3 2 
6 1 5 7 3 8 10 9 2 4 
8 10 9 6 5 4 3 2 1 7 
10 8 7 6 4 5 3 2 1 9 
7 6 3 2 5 4 1 10 9 8 
8 10 9 3 2 1 4 5 6 7 
6 4 3 2 5 1 8 10 9 7 
2 4 6 1 5 3 7 8 9 10 
1 10 9 8 7 6 5 4 3 2 
3 2 1 4 5 6 7 8 9 10 
4 3 2 1 6 7 10...

result:

ok 200 cases.

Test #10:

score: 0
Accepted
time: 3ms
memory: 3676kb

input:

20
00011111000111100010
00100111111000000010
01011011101000100111
10100010000100000010
10100100000010101101
11001001010010000111
11110000010000111001
11100100111000010101
01100001011101100010
01000111100111011001
01100001100111111111
10010000111001010000
10001100011001001000
10000000111110111010
101...

output:

1 20 19 18 15 16 17 13 14 12 11 8 9 10 7 4 3 2 6 5 
10 9 8 4 5 6 3 7 2 1 12 11 15 18 19 17 16 14 13 
22 12 10 11 6 3 2 1 5 4 8 9 13 16 17 18 19 14 20 15 21 7 
3 2 1 5 6 13 11 12 10 9 8 7 4 
3 2 1 5 6 7 4 10 11 14 13 15 16 24 25 23 27 30 28 29 26 22 18 21 20 19 17 12 9 8 
21 20 13 10 11 9 12 6 7 8 3 ...

result:

ok 72 cases.

Test #11:

score: 0
Accepted
time: 5ms
memory: 3760kb

input:

59
01110100011001000100111000110110010001011111001011011101100
10001011111001111100111111100010111011100101001100001000101
10000011101010011100111011000001101110001100001110110101001
10001100100110101001000000101101101110001110111001110001101
010101010101101111110011111000100101111111101001111100111...

output:

59 58 56 48 55 54 53 52 51 47 46 45 44 43 42 36 41 40 38 39 37 31 34 33 32 29 28 24 23 22 20 7 19 18 11 17 12 16 13 15 14 9 10 6 3 2 1 4 5 8 21 25 26 27 30 35 49 50 57 
4 1 3 7 8 9 10 11 14 15 13 16 26 27 29 30 31 32 33 28 34 35 25 36 38 42 43 44 41 45 39 46 48 49 47 50 54 56 57 62 63 58 61 60 59 55...

result:

ok 29 cases.

Test #12:

score: 0
Accepted
time: 10ms
memory: 4056kb

input:

160
0010110100011110110110110001100110111000000100001100110101001011100101011100011100111011011011010011010110101100000011111010110111001011001100010000101111001101
000011011110000111010100011011010001001101001100111010101101001011001101001001000001011010001101100111011110110101111010101100000101001...

output:

11 1 10 5 12 14 15 13 16 7 17 20 21 19 22 24 25 26 27 32 33 36 40 39 41 46 48 49 52 53 51 62 63 61 64 56 65 66 68 69 71 72 74 75 76 77 78 80 79 88 91 113 116 154 160 155 159 158 157 156 153 115 152 117 151 119 150 120 149 118 148 137 147 138 146 143 145 144 139 142 140 141 122 136 131 135 134 132 13...

result:

ok 14 cases.

Test #13:

score: 0
Accepted
time: 21ms
memory: 6192kb

input:

438
01000100111101110010100101010001000101100011101011001001011110011100000110001001100101100101110011110111001101001101100111110010011001000110100110101001001101110001110011101010100010110100001011110011001000000001111111011001001010011101110010110111011111100011111101101001101010101010110000000111...

output:

438 435 434 433 432 430 431 429 427 425 424 411 423 410 422 412 421 420 419 413 418 416 417 415 414 409 408 407 379 378 367 366 342 343 339 334 336 335 333 331 328 327 285 319 314 318 317 316 315 302 313 312 307 311 310 309 308 306 305 304 303 301 299 300 278 284 279 283 280 282 281 274 273 272 268 ...

result:

ok 7 cases.

Test #14:

score: 0
Accepted
time: 68ms
memory: 6332kb

input:

1227
0100010000101001111110111010100100001100101111001011101010010000100111110110000001101101000101010011000101100110010011010100010011111000101101011001010111010010101001100100011000100000101011011011110101010011011110111101110010100010101111010101011001100001000110011101101010010011110010011011100...

output:

4 1 7 8 9 6 10 12 13 19 20 23 24 22 27 29 30 32 35 49 50 51 52 53 54 55 56 57 36 58 61 60 62 59 63 48 64 66 65 67 47 77 78 79 90 91 92 89 96 99 98 102 101 123 127 129 130 131 132 128 133 135 136 134 137 139 140 141 142 143 156 157 158 159 162 163 166 167 168 170 175 180 189 192 193 191 194 196 195 1...

result:

ok 2 cases.

Test #15:

score: 0
Accepted
time: 63ms
memory: 5992kb

input:

1078
0111011100111011000000110100010011001100100101011100111000110001110111110010111010110111010110001010100111101001110111010010000001000100110000000010000010111010101000000110101011011011000001100000011111010001010001101111011110111110000110111111111111101100110100011001110110111011111001110010110...

output:

12 28 1 27 26 25 23 24 22 15 21 18 20 19 17 16 14 13 30 31 35 36 37 34 38 39 40 42 43 44 45 47 48 46 51 54 53 56 57 65 66 67 68 70 71 69 72 77 76 78 79 75 83 82 84 86 88 92 93 94 96 97 98 95 99 91 100 101 108 109 110 111 112 113 121 122 125 128 132 133 135 136 149 153 152 154 155 157 156 159 160 167...

result:

ok 2 cases.

Test #16:

score: 0
Accepted
time: 73ms
memory: 7516kb

input:

1310
0110101010101111001001001110010101000100000000011001001110111010011000110110010000001110111100110100110110110000011001000101100100000011011111011100010001101111001100100000011100111111101101001011000101000011100101111011100101011111000100101110011110001101110110100111101101011000000000101000101...

output:

1310 1305 1301 1287 1300 1299 1296 1298 1297 1282 1285 1284 1283 1277 1276 1275 1272 1271 1269 1268 1267 1263 1264 1260 1259 1258 1256 1255 1253 1248 1252 1251 1250 1249 1245 1247 1246 1244 1241 1243 1242 1239 1240 1235 1234 1233 1228 1222 1226 1223 1225 1224 1220 1217 1214 1215 1212 1191 1197 1195 ...

result:

ok 2 cases.

Test #17:

score: 0
Accepted
time: 82ms
memory: 6784kb

input:

1542
0000100001001001100011001101100001110111010111001110111110011011001000110010001111000000100011101001000100000001111001110100110101101111000011100010000100000111010001010110101110000001000001110100101111100001110010111000111001010111011100100100111011010101001100100101110110011000001011001000011...

output:

1542 1510 1540 1539 1538 1537 1522 1536 1523 1535 1534 1533 1532 1531 1530 1524 1529 1528 1527 1526 1525 1519 1521 1520 1513 1518 1516 1517 1515 1514 1511 1512 1509 1508 1503 1507 1505 1506 1502 1500 1499 1495 1491 1494 1480 1493 1492 1482 1481 1479 1478 1477 1475 1469 1474 1471 1473 1472 1470 1467 ...

result:

ok 2 cases.

Test #18:

score: 0
Accepted
time: 120ms
memory: 7756kb

input:

2000
0101010000001001011001110100110110001010001110110101101100010010011100000111001100000000110111011111100001110001111011101101110010100100001001110010001111011110011011010000100001011100000000110011000110010100101010110100001010101001111101011001110011010001100110000110101110000001000101001101010...

output:

2000 1996 1980 1979 1978 1974 1977 1970 1976 1975 1966 1969 1968 1967 1963 1962 1957 1952 1956 1955 1954 1953 1945 1951 1950 1947 1949 1948 1941 1944 1942 1943 1940 1936 1927 1914 1902 1895 1901 1900 1899 1898 1897 1896 1894 1891 1893 1892 1888 1890 1889 1885 1886 1880 1876 1874 1871 1873 1872 1870 ...

result:

ok 1 cases.

Test #19:

score: 0
Accepted
time: 120ms
memory: 7752kb

input:

2000
0100001100010101000111011110110000001010100001111010011110111010011101000001100111011101101100000100100011001100011101011110101011101000010000000001010110001100011111100011010110101010001100011100011100000111011011100010110010100001111101011001010111111101011100111011110001101000111100110101000...

output:

11 1 10 7 9 6 5 3 14 15 13 19 20 16 21 32 33 38 39 37 40 42 46 47 50 49 77 78 76 79 80 73 84 85 83 86 97 98 117 118 120 119 121 133 132 134 149 151 150 152 148 153 155 154 156 157 158 160 161 163 162 164 165 166 168 169 170 167 171 185 186 187 189 193 194 190 198 199 200 201 202 197 212 213 214 211 ...

result:

ok 1 cases.

Test #20:

score: 0
Accepted
time: 123ms
memory: 7620kb

input:

2000
0110101010100011101110010101000111001011110000101111001110111111100111000101010001110111000110110001010000010101101001011001111111011111111111011111000011100001111110000101100100000110100100100110110010000101101101100100001101100010011100000011110000100100011110111001101001101100110111011101011...

output:

1989 1990 1988 1984 1983 1982 1981 1980 1979 1974 1978 1976 1977 1975 1939 1937 1936 1935 1934 1932 1929 1931 1930 1928 1923 1927 1926 1922 1919 1907 1918 1908 1917 1909 1916 1910 1915 1902 1914 1913 1912 1911 1899 1898 1888 1886 1884 1881 1870 1869 1868 1863 1867 1865 1866 1862 1860 1861 1854 1844 ...

result:

ok 1 cases.

Test #21:

score: 0
Accepted
time: 115ms
memory: 7756kb

input:

2000
0110000110000000010000010011101111110001110101010000000001101110101010101001111001010100100101001100010100101000110001000101000101010011011000000100011110100001000010000111100110111010110001000100011100100011111001011011111011111001101101111011111011111010011100001111010001011101110000000001011...

output:

9 15 1 14 8 16 18 19 20 21 23 24 25 30 31 32 33 29 34 41 44 45 53 54 57 64 65 72 73 74 75 82 85 86 87 84 89 90 88 91 83 92 99 98 100 101 102 97 103 95 104 105 109 110 119 120 121 122 118 125 126 133 134 127 136 137 138 143 146 147 148 145 157 158 166 167 168 165 169 162 173 174 175 177 178 176 179 1...

result:

ok 1 cases.

Test #22:

score: 0
Accepted
time: 117ms
memory: 7760kb

input:

2000
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...

output:

1 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 194...

result:

ok 1 cases.

Test #23:

score: 0
Accepted
time: 113ms
memory: 7752kb

input:

2000
0111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

output:

1 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 194...

result:

ok 1 cases.