#include <bits/stdc++.h>
using namespace std;
const int NMAX = 1505;
int N, p[NMAX], sz[NMAX], cnt[NMAX][NMAX];
int get(int x) {
if(x == p[x])
return x;
return p[x] = get(p[x]);
}
void unite(int u, int v) {
if(u == v)
return;
if(sz[u] < sz[v])
swap(u, v);
for(int k = 1; k <= N; ++k)
cnt[u][k] += cnt[v][k], cnt[k][u] += cnt[v][k];
cnt[u][v] = cnt[v][u] = 0;
p[v] = u;
}
void initialize(int n) {
N = n;
for(int i = 1; i <= N; ++i) {
p[i] = i;
sz[i] = 1;
for(int j = 1; j <= N; ++j)
if(i != j)
cnt[i][j] = 1;
}
}
int hasEdge(int u, int v) {
++u, ++v;
u = get(u);
v = get(v);
if(cnt[u][v] > 1) { /// daca am cnt > 1, pot sa nu le unesc si practic judge-ul nu afla nimic.
/// Pentru a fi graful conex, trebuie sa unesc u si v, dar eu inca mai am niste variante de muchii cu care le pot uni.
/// Astfel, judge-ul prin intrebarea asta nu afla nimic sigur, graful putand fi ori conex ori sa nu fie conex(asta stie doar cand ajunge la ultima muchie ce poate uni u si v si afla daca exista sau nu).
/// E clar de aici ca jocul ce il simulam pentru a avea o strategie sigura de castig
/// are la baza un graf conex(daca nu ar fi conex, judge-ul ar putea afla mai repede ca nu poate uni 2
/// componente de pe parcurs si ar sti la un pas i < r ca graful nu e conex, deci am pierde).
/// Prin prisma faptului ca 2 componente de pe parcurs sunt unite doar
/// in momentul in care mai exista o unica muchie ce le poate uni,
/// inductiv, realizam ca judge-ul va afla ca graful este conex doar la intrebarea r,
/// cand va uni ultimele 2 componente ramase cu singura muchie ramasa ce le poate uni, deci va pierde mereu.
--cnt[u][v], --cnt[v][u];
return 0;
}
/// Aici pe langa muchiile ce unesc 2 componente mai trasez si alea
/// ce au capetele in 2 noduri din aceeasi componenta, dar asta nu este obligatoriu
/// ele fiind irelevante pentru continuitatea jocului in acest punct.
unite(u, v);
return 1;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
384 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
492 KB |
Output is correct |
| 26 |
Correct |
1 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
1 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
492 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
512 KB |
Output is correct |
| 34 |
Correct |
2 ms |
748 KB |
Output is correct |
| 35 |
Correct |
2 ms |
748 KB |
Output is correct |
| 36 |
Correct |
2 ms |
748 KB |
Output is correct |
| 37 |
Correct |
2 ms |
748 KB |
Output is correct |
| 38 |
Correct |
2 ms |
748 KB |
Output is correct |
| 39 |
Correct |
2 ms |
748 KB |
Output is correct |
| 40 |
Correct |
2 ms |
748 KB |
Output is correct |
| 41 |
Correct |
2 ms |
748 KB |
Output is correct |
| 42 |
Correct |
2 ms |
748 KB |
Output is correct |
| 43 |
Correct |
3 ms |
748 KB |
Output is correct |
| 44 |
Correct |
3 ms |
748 KB |
Output is correct |
| 45 |
Correct |
2 ms |
748 KB |
Output is correct |
| 46 |
Correct |
2 ms |
748 KB |
Output is correct |
| 47 |
Correct |
2 ms |
748 KB |
Output is correct |
| 48 |
Correct |
2 ms |
748 KB |
Output is correct |
| 49 |
Correct |
2 ms |
748 KB |
Output is correct |
| 50 |
Correct |
2 ms |
748 KB |
Output is correct |
| 51 |
Correct |
2 ms |
748 KB |
Output is correct |
| 52 |
Correct |
2 ms |
748 KB |
Output is correct |
| 53 |
Correct |
2 ms |
748 KB |
Output is correct |
| 54 |
Correct |
2 ms |
748 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
492 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
1 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
512 KB |
Output is correct |
| 26 |
Correct |
1 ms |
492 KB |
Output is correct |
| 27 |
Correct |
1 ms |
492 KB |
Output is correct |
| 28 |
Correct |
1 ms |
492 KB |
Output is correct |
| 29 |
Correct |
1 ms |
492 KB |
Output is correct |
| 30 |
Correct |
1 ms |
492 KB |
Output is correct |
| 31 |
Correct |
1 ms |
492 KB |
Output is correct |
| 32 |
Correct |
1 ms |
492 KB |
Output is correct |
| 33 |
Correct |
1 ms |
492 KB |
Output is correct |
| 34 |
Correct |
2 ms |
748 KB |
Output is correct |
| 35 |
Correct |
2 ms |
748 KB |
Output is correct |
| 36 |
Correct |
3 ms |
748 KB |
Output is correct |
| 37 |
Correct |
2 ms |
748 KB |
Output is correct |
| 38 |
Correct |
2 ms |
748 KB |
Output is correct |
| 39 |
Correct |
2 ms |
748 KB |
Output is correct |
| 40 |
Correct |
3 ms |
748 KB |
Output is correct |
| 41 |
Correct |
2 ms |
748 KB |
Output is correct |
| 42 |
Correct |
2 ms |
748 KB |
Output is correct |
| 43 |
Correct |
2 ms |
748 KB |
Output is correct |
| 44 |
Correct |
2 ms |
748 KB |
Output is correct |
| 45 |
Correct |
2 ms |
748 KB |
Output is correct |
| 46 |
Correct |
2 ms |
748 KB |
Output is correct |
| 47 |
Correct |
2 ms |
748 KB |
Output is correct |
| 48 |
Correct |
2 ms |
748 KB |
Output is correct |
| 49 |
Correct |
2 ms |
748 KB |
Output is correct |
| 50 |
Correct |
2 ms |
748 KB |
Output is correct |
| 51 |
Correct |
2 ms |
748 KB |
Output is correct |
| 52 |
Correct |
2 ms |
748 KB |
Output is correct |
| 53 |
Correct |
2 ms |
748 KB |
Output is correct |
| 54 |
Correct |
2 ms |
748 KB |
Output is correct |
| 55 |
Correct |
50 ms |
4204 KB |
Output is correct |
| 56 |
Correct |
53 ms |
4204 KB |
Output is correct |
| 57 |
Correct |
50 ms |
4204 KB |
Output is correct |
| 58 |
Correct |
50 ms |
4204 KB |
Output is correct |
| 59 |
Correct |
54 ms |
4204 KB |
Output is correct |
| 60 |
Correct |
58 ms |
4204 KB |
Output is correct |
| 61 |
Correct |
63 ms |
4204 KB |
Output is correct |
| 62 |
Correct |
49 ms |
4204 KB |
Output is correct |
| 63 |
Correct |
51 ms |
4204 KB |
Output is correct |
| 64 |
Correct |
48 ms |
4204 KB |
Output is correct |
| 65 |
Correct |
49 ms |
4204 KB |
Output is correct |
| 66 |
Correct |
63 ms |
4204 KB |
Output is correct |
| 67 |
Correct |
49 ms |
4204 KB |
Output is correct |
| 68 |
Correct |
50 ms |
4204 KB |
Output is correct |
| 69 |
Correct |
51 ms |
4204 KB |
Output is correct |
| 70 |
Correct |
50 ms |
4204 KB |
Output is correct |
| 71 |
Correct |
51 ms |
4204 KB |
Output is correct |
| 72 |
Correct |
49 ms |
4204 KB |
Output is correct |
| 73 |
Correct |
51 ms |
4204 KB |
Output is correct |
| 74 |
Correct |
49 ms |
4204 KB |
Output is correct |
| 75 |
Correct |
50 ms |
4204 KB |
Output is correct |
| 76 |
Correct |
120 ms |
6892 KB |
Output is correct |
| 77 |
Correct |
127 ms |
6764 KB |
Output is correct |
| 78 |
Correct |
128 ms |
6764 KB |
Output is correct |
| 79 |
Correct |
112 ms |
6764 KB |
Output is correct |
| 80 |
Correct |
115 ms |
6764 KB |
Output is correct |
| 81 |
Correct |
123 ms |
6764 KB |
Output is correct |
| 82 |
Correct |
114 ms |
6764 KB |
Output is correct |
| 83 |
Correct |
120 ms |
6764 KB |
Output is correct |
| 84 |
Correct |
115 ms |
6764 KB |
Output is correct |
| 85 |
Correct |
216 ms |
9452 KB |
Output is correct |
| 86 |
Correct |
215 ms |
9452 KB |
Output is correct |
| 87 |
Correct |
210 ms |
9452 KB |
Output is correct |
| 88 |
Correct |
212 ms |
9452 KB |
Output is correct |
| 89 |
Correct |
208 ms |
9452 KB |
Output is correct |
| 90 |
Correct |
208 ms |
9452 KB |
Output is correct |
| 91 |
Correct |
224 ms |
9580 KB |
Output is correct |
| 92 |
Correct |
215 ms |
9452 KB |
Output is correct |
| 93 |
Correct |
206 ms |
9452 KB |
Output is correct |
| 94 |
Correct |
493 ms |
15852 KB |
Output is correct |
| 95 |
Correct |
494 ms |
15984 KB |
Output is correct |
| 96 |
Correct |
494 ms |
16108 KB |
Output is correct |
| 97 |
Correct |
495 ms |
15980 KB |
Output is correct |
| 98 |
Correct |
566 ms |
15852 KB |
Output is correct |
| 99 |
Correct |
494 ms |
15852 KB |
Output is correct |
| 100 |
Correct |
517 ms |
15852 KB |
Output is correct |
