/*
dp[node 1][node 2][0/1] = max edges in the range starting at node 1/2 (based on the third dimension)
big[node 1][node 2] = max edges if any range from node 1 to node 2
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define For(i, a, b) for(int i=a; i<b; i++)
#define ffi For(i, 0, N)
#define ffj For(j, 0, N)
#define ffa ffi ffj
#define s <<" "<<
#define c <<" : "<<
#define w cout
#define e endl//"\n"
#define pb push_back
#define mp make_pair
#define a first
#define b second
#define int ll
const int MAXN=500, INF=1000000000000000000;
///500,000,000
int N, K, dp[MAXN][MAXN][2], out, loc;
vector<int> adj[MAXN];
bool in (int x, int y, int z) {
if (y < z) return y < x && x < z;
return x > y || x < z;
}
int solve(int n1, int n2, int at) {
if (dp[n1][n2][at] != -1) return dp[n1][n2][at];
dp[n1][n2][at] = 0;
//w<< n1 s n2 s at<<e;
/// range is n1+1 to n2-1 (n1+1)%N to (n2-1+N)%N
if ((n1+1)%N == n2) {dp[n1][n2][at] = 0; return dp[n1][n2][at];}
if (at == 0) {
/// at n1
for (int i: adj[n1]) if (in(i, n1, n2)) {
dp[n1][n2][0] = max(dp[n1][n2][0], max(solve(n1, i, 1), solve(i, n2, 0))+1);
}
return dp[n1][n2][0];
}
/// at n2
for (int i: adj[n2]) if (in(i, n1, n2)) {
dp[n1][n2][1] = max(dp[n1][n2][1], max(solve(i, n2, 0), solve(n1, i, 1))+1);
}
return dp[n1][n2][1];
}
main() {
//ifstream cin("test.in");
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> N >> K;
ffi {int a; cin >> a; while (a != 0) {adj[i].pb(a-1); cin >> a;}}
ffa dp[i][j][0] = dp[i][j][1] = -1;
ffa {solve(i, j, 0); solve(i, j, 1);}
if (K == 0) ffi{
if (dp[i][i][0] > out) {out = dp[i][i][0]; loc = i+1;}
}
else {
ffi for (int j: adj[i]) {
if (1+dp[j][j][0] > out) {out = dp[j][j][0]+1; loc = i+1;}
}
}
//ffa w<< i+1 s j+1 c solve(i, j, 0) s solve(i, j, 1)<<e;
w<< out <<e<< loc<<e;
}
Compilation message
race.cpp:51:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main() {
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 3 |
Correct |
2 ms |
520 KB |
Output is correct |
| 4 |
Incorrect |
2 ms |
692 KB |
Output isn't correct |
| 5 |
Correct |
3 ms |
760 KB |
Output is correct |
| 6 |
Incorrect |
3 ms |
760 KB |
Output isn't correct |
| 7 |
Correct |
6 ms |
888 KB |
Output is correct |
| 8 |
Incorrect |
3 ms |
888 KB |
Output isn't correct |
| 9 |
Correct |
6 ms |
1144 KB |
Output is correct |
| 10 |
Correct |
12 ms |
1156 KB |
Output is correct |
| 11 |
Correct |
8 ms |
1156 KB |
Output is correct |
| 12 |
Incorrect |
20 ms |
2124 KB |
Output isn't correct |
| 13 |
Incorrect |
40 ms |
3148 KB |
Output isn't correct |
| 14 |
Correct |
71 ms |
3808 KB |
Output is correct |
| 15 |
Incorrect |
191 ms |
4840 KB |
Output isn't correct |
| 16 |
Incorrect |
254 ms |
4960 KB |
Output isn't correct |
| 17 |
Incorrect |
201 ms |
4960 KB |
Output isn't correct |
| 18 |
Correct |
112 ms |
4960 KB |
Output is correct |
| 19 |
Incorrect |
300 ms |
4960 KB |
Output isn't correct |
| 20 |
Incorrect |
259 ms |
4960 KB |
Output isn't correct |
