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*/
#include <iostream>
#include <complex>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <numeric>
#include <cstring>
#include <ctime>
#include <cstdlib>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <cmath>
#include <bitset>
#include <cassert>
#include <queue>
#include <stack>
#include <deque>
#include <random>
using namespace std;
template<typename T1, typename T2>inline void chkmin(T1 &x, T2 y) { x = (x > y ? y: x);}
template<typename T1, typename T2>inline void chkmax(T1 &x, T2 y) { x = (x < y ? y: x);}
#define sz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
#define left left224
#define right right224
#define next next224
#define rank rank224
#define prev prev224
#define y1 y1224
#define read(FILENAME) freopen((FILENAME + ".in").c_str(), "r", stdin)
#define write(FILENAME) freopen((FILENAME + ".out").c_str(), "w", stdout)
#define files(FILENAME) read(FILENAME), write(FILENAME)
#define pb push_back
#define mp make_pair
const string FILENAME = "input";
const int MAXN = 501;
int n, t;
bitset<501> b[MAXN];
int dp[MAXN][MAXN][2];
int dp1[MAXN][MAXN][2];
int dist(const int &i, const int &j) {
return (j >= i ? j - i: n - i + j);
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
//read(FILENAME);
cin >> n >> t;
for (int i = 0; i < n; i++) {
int a;
while (cin >> a) {
if (a == 0) {
break;
}
b[i][a - 1] = true;
}
}
for (int len = 1; len <= n - 1; len++) {
for (int i = 0; i < n; i++) {
int j = (i + len) % n;
for (int t = 0; t < 2; t++) {
int cur = (t == 0 ? i: j);
for (int k = 0; k <= len; k++) {
int g = (i + k >= n ? i + k - n: i + k);
if (g != cur) {
if (b[cur][g]) {
chkmax(dp[len][i][t], dp[k - (cur == i ? 1: 0)][(i == cur ? (i + 1) % n: i)][1] + 1);
chkmax(dp[len][i][t], dp[(len - k) - (cur == j ? 1: 0)][g][0] + 1);
}
}
}
}
}
}
if (t == 0) {
int res = 0;
int pos = -1;
for (int i = 0; i < n; i++) {
chkmax(res, dp[n - 1][i][0]);
if (res == dp[n - 1][i][0]) {
pos = i;
}
chkmax(res, dp[n - 1][i][1]);
if (res == dp[n - 1][i][1]) {
pos = (i + n - 1) % n;
}
}
cout << res << endl;
cout << pos + 1 << endl;
return 0;
}
for (int len = 1; len <= n - 1; len++) {
for (int i = 0; i < n; i++) {
int j = (i + len) % n;
for (int t = 0; t < 2; t++) {
int cur = (t == 0 ? i: j);
for (int k = 0; k <= len; k++) {
int g = (i + k >= n ? i + k - n: i + k);
if (g != cur) {
if (b[cur][g]) {
if (cur == j) {
chkmax(dp1[len][i][t], dp1[k - (cur == i ? 1: 0)][(i == cur ? (i + 1) % n: i)][1] + 1);
} else {
chkmax(dp1[len][i][t], dp1[(len - k) - (cur == j ? 1: 0)][g][0] + 1);
}
}
}
}
}
}
}
int res = 0;
int pos = -1;
for (int i = 0; i < n; i++) {
chkmax(res, dp[n - 1][i][0]);
if (res == dp[n - 1][i][0]) {
pos = i;
}
chkmax(res, dp[n - 1][i][1]);
if (res == dp[n - 1][i][1]) {
pos = (i + n - 1) % n;
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (j == i || !b[i][j]) {
continue;
}
int f = dist(j, i) - 1;
int len = dp1[f][j][0] + 2;
if (len == 2) {
continue;
}
for (int k = f + 2; k <= n - 1; k++) {
int t = (j + k) % n;
int len1 = len + max(dp[dist(t, j) - 1][t][0], dp[dist(i, t) - 1][(i + 1) % n][1]);
if (len1 > res) {
res = len1;
pos = i;
}
}
}
for (int j = 0; j < n; j++) {
if (j == i || !b[i][j]) {
continue;
}
int f = dist(i, j) - 1;
int len = dp1[f][(i + 1) % n][1] + 2;
if (len == 2) {
continue;
}
for (int k = f + 2; k <= n - 1; k++) {
int t = (i + k) % n;
int len1 = len + max(dp[dist(t, i) - 1][t][0], dp[dist(j, t) - 1][(j + 1) % n][1]);
if (len1 > res) {
res = len1;
pos = i;
}
}
}
}
cout << res << endl;
cout << pos + 1 << endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Incorrect |
3 ms |
504 KB |
Output isn't correct |
| 4 |
Incorrect |
3 ms |
636 KB |
Output isn't correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
6 ms |
760 KB |
Output is correct |
| 7 |
Correct |
6 ms |
632 KB |
Output is correct |
| 8 |
Incorrect |
8 ms |
988 KB |
Output isn't correct |
| 9 |
Correct |
9 ms |
760 KB |
Output is correct |
| 10 |
Correct |
10 ms |
776 KB |
Output is correct |
| 11 |
Correct |
12 ms |
760 KB |
Output is correct |
| 12 |
Incorrect |
95 ms |
1884 KB |
Output isn't correct |
| 13 |
Incorrect |
241 ms |
2776 KB |
Output isn't correct |
| 14 |
Correct |
237 ms |
2032 KB |
Output is correct |
| 15 |
Incorrect |
1300 ms |
4628 KB |
Output isn't correct |
| 16 |
Incorrect |
1466 ms |
4676 KB |
Output isn't correct |
| 17 |
Incorrect |
1257 ms |
4472 KB |
Output isn't correct |
| 18 |
Correct |
470 ms |
2492 KB |
Output is correct |
| 19 |
Incorrect |
1624 ms |
4552 KB |
Output isn't correct |
| 20 |
Incorrect |
1595 ms |
4684 KB |
Output isn't correct |
