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
#281504#5523. Graph Problem With Small $n$pikachu_coderTL 1331ms71116kbC++141.7kb2023-12-10 09:58:002023-12-10 09:58:01

Judging History

你现在查看的是最新测评结果

  • [2023-12-10 09:58:01]
  • 评测
  • 测评结果:TL
  • 用时:1331ms
  • 内存:71116kb
  • [2023-12-10 09:58:00]
  • 提交

answer

/*
4
0110
1010
1101
0010

0 if they cannot reach each other, 1 if they can reach each other
 Create a similar grid, with [i][j] = 1 if there exists a
 hamiltonian path from i to j

 dp[mask][i] = true if there exists a path from 1 to i using
 mask bits, dp2[mask][i] = true if there exists a path from i
 to 1 using mask bits?
*/
#include <iostream>

using namespace std;
#define ll long long
const int maxn = 24;
const int max_mask = (1 << maxn);
int n;

int adj[maxn][2];
int dp[max_mask][2]; //0 for to 1, 1 for away from 1
int rt[maxn];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n;
    for(int a = 0; a < n; a++){
        string s; cin >> s;
        for(int b = 0; b < n; b++){
            if(s[b] == '1'){
                adj[a][0] |= (1 << b);
                adj[b][1] |= (1 << a);
            }
        }
    }

    dp[1][0] = dp[1][1] = 1;
    for(int typ = 0; typ < 2; typ++) {
        for (int mask = 1; mask < (1 << n); mask++) {
            for (int i = 0; i < n; i++){ //go to i from here, and adjacency list of i with all reached nodes
                if((mask & (1 << i)) <= 0 && (dp[mask][typ] & adj[i][typ]) > 0){
                    dp[mask|(1 << i)][typ] |= (1 << i);
                }
            }
        }
    }

    for(int mask = 0; mask < (1 << n); mask++){
        for(int i = 0; i < n; i++){
            if(((1 << i) & dp[mask][0]) > 0){
                rt[i] |= dp[((~mask)&((1<<n)-1))|1][1];
            }
        }
    }
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            cout << ((rt[i] & (1 << j))>0);
        } cout << "\n";
    }
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3684kb

input:

4
0110
1010
1101
0010

output:

0001
0001
0000
1100

result:

ok 4 lines

Test #2:

score: 0
Accepted
time: 0ms
memory: 3660kb

input:

6
010001
101000
010100
001010
000101
100010

output:

010001
101000
010100
001010
000101
100010

result:

ok 6 lines

Test #3:

score: 0
Accepted
time: 0ms
memory: 3652kb

input:

4
0111
1011
1101
1110

output:

0111
1011
1101
1110

result:

ok 4 lines

Test #4:

score: 0
Accepted
time: 1066ms
memory: 3584kb

input:

23
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
000000000...

output:

00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
000000000000...

result:

ok 23 lines

Test #5:

score: 0
Accepted
time: 1061ms
memory: 13892kb

input:

23
00010100000000000101000
00000000010000000001000
00000000000001000000001
10000000000000000010000
00000000000000000000000
10000000000000000000000
00000001000000000000000
00000010000000000010000
00000000000001000000000
01000000000000000000000
00000000000000000000000
00000000000000000000000
000000000...

output:

00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
000000000000...

result:

ok 23 lines

Test #6:

score: 0
Accepted
time: 1070ms
memory: 65200kb

input:

23
00001000000000000000000
00001000010001000000000
00000000000101000010000
00001000000100000000000
11010000010011000100000
00000000000100000000000
00000000000000000000001
00000000000000000101000
00000000000000000000000
01001000000000101010010
00000000000000000000101
00110100000010001000000
000010000...

output:

00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
000000000000...

result:

ok 23 lines

Test #7:

score: 0
Accepted
time: 1078ms
memory: 69260kb

input:

23
01000000000001101001100
10000001101000000000000
00000100000100010000100
00000000000000001011000
00000100001000000000000
00101000000000001000001
00000000000000000000000
01000000000000000000000
01000000000100000010000
00000000000001000000011
01001000000000010000000
00100000100001000100001
000000000...

output:

00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
00000000000000000000000
000000000000...

result:

ok 23 lines

Test #8:

score: 0
Accepted
time: 1075ms
memory: 69120kb

input:

23
00000000010001001001010
00100010001101110000001
01000001000100110000000
00000011010001101100100
00000000010000010001000
00000000000000001001000
01010001000000000000001
00110010000000000000010
00000000011000100100000
10011000101000100000000
01000000110010101010000
01100000000000000000000
000000000...

output:

01111111110111110110111
10011111110111110110111
10011111110111110110111
11101111110110110110111
11110111110111110110111
11111011110111111111111
11111101110111110110111
11111110110111110110111
11111111010111110110111
11111111100110100110111
00000000000010000010100
11111111110011110110111
111111111111...

result:

ok 23 lines

Test #9:

score: 0
Accepted
time: 1082ms
memory: 61484kb

input:

23
00001000001001000000000
00101100111110100000000
01001000100001011010000
00000000010000010010000
11100001100001000000010
01000010101010100011011
00000100000100100010000
00001000011000000010001
01101100000000011001001
01010001000010011000000
11000101000110001100000
01000010001000000000010
010001000...

output:

00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
00000000000000000000100
000000000000...

result:

ok 23 lines

Test #10:

score: 0
Accepted
time: 1141ms
memory: 70280kb

input:

23
00001011110010000000001
00000100000011000000100
00010011010100000000011
00100011011001010100100
10000101000110100000000
01001000001010001000100
10110000000110000010000
10111000001100010100010
10000000000010001000110
10110000001110100110001
00010101010100001000000
00101011011000100100011
110011101...

output:

00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
00000000000000000001000
000000000000...

result:

ok 23 lines

Test #11:

score: 0
Accepted
time: 1180ms
memory: 69864kb

input:

23
00100100001000000100001
00101110110000100100001
11000000000101001000100
00000000010000001111010
01000011010001011001010
11000000010100001001011
01001000001010101000100
00001000001010000000000
01000000000001100001011
01011100001101100000000
10000011010010100000010
00100100010000000001000
000000110...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #12:

score: 0
Accepted
time: 1220ms
memory: 71020kb

input:

23
00000001011001011100100
00000001010000000010100
00000001010010100010000
00001000100111100000000
00010100011000010111001
00001000100001000010010
00000001111001100011000
11100010111100110001001
00010111010000101100110
11101011100000100100100
10001011000010100000010
00010001000001011101110
001100000...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #13:

score: 0
Accepted
time: 1233ms
memory: 71116kb

input:

23
00100100001101000100000
00010111011000100000010
10000010010001111000010
01001011101001000100000
00010000010110000100111
11000000101000011101001
01110001100000010101100
01010010001001010100000
00010110001100010010001
01101000000011000111000
11010101100010010001101
10001000100010001110100
000010000...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #14:

score: 0
Accepted
time: 1300ms
memory: 70460kb

input:

23
01001101001011010101100
10001010111100100001110
00000000010101000111100
00000000001010010100010
11000000100110000111000
10000010001000010101000
01000100100010001100101
10000000010001000110110
01001010000001111100000
01100001000001001101001
11010100000011001010111
01101000000000100100110
100110100...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #15:

score: 0
Accepted
time: 1298ms
memory: 69532kb

input:

23
01100101000101001000001
10111000100000010110010
11011010011101000010010
01100010001111011011111
01100010011110001111100
10000000011000001011010
00111001001000101100111
10000010110110011000000
01000001001110010100100
00101101000100111100001
00111110100110011011010
10111001111010001010000
000110011...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #16:

score: 0
Accepted
time: 1278ms
memory: 71104kb

input:

23
01111001001110001000101
10000000000100111111110
10010101000110100100101
10101000001010010101001
10010010011110101101111
00100000101100011000000
00001000011000010001101
10100000010000000000100
00000100010110001111100
00001011100101010110111
10011110000000010101101
11101100110010010100000
101110001...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #17:

score: 0
Accepted
time: 1286ms
memory: 70148kb

input:

23
01010000000100001110001
10000110010001110010100
00011000101111001010110
10101111011100101100111
00110011111111111011000
01010011100001111011011
01011100001111000011101
00011100001110111010010
00101100011101001000011
01011000100000000000010
00111011100001001000111
10111011100000110100001
001010110...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #18:

score: 0
Accepted
time: 1316ms
memory: 70376kb

input:

23
00100101011111000101011
00100001000110000111101
11010000011110010110011
00101101110110000101110
00010101111001110101110
10011001111101010011101
00000000110011000000100
11011100110111001110110
00011111000000100110010
10111111000111101010010
10101100000111111010100
11110101011010101010010
111100110...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #19:

score: 0
Accepted
time: 1331ms
memory: 70676kb

input:

23
00100001100011011101011
00111011101101101011001
11001101100100001000111
01001010110101101000010
01110011001111000101111
00100011100000111101010
01011100000110101001100
11101100010110110011000
11110100010010000011010
00010001101011011011011
01001000010001001011111
01111011000010101011101
100010111...

output:

01111111111111111111111
10111111111111111111111
11011111111111111111111
11101111111111111111111
11110111111111111111111
11111011111111111111111
11111101111111111111111
11111110111111111111111
11111111011111111111111
11111111101111111111111
11111111110111111111111
11111111111011111111111
111111111111...

result:

ok 23 lines

Test #20:

score: -100
Time Limit Exceeded

input:

24
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
0000000000000000000000...

output:


result: