| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 853666 |
2023-09-25T00:46:22 Z |
NK_ |
Tug of War (BOI15_tug) |
C++17 |
|
841 ms |
10144 KB |
// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
#define pb push_back
#define pf push_front
#define mp make_pair
#define f first
#define s second
#define sz(x) int(x.size())
template<class T> using V = vector<T>;
using pi = pair<int, int>;
using vi = V<int>;
using vpi = V<pi>;
using ll = long long;
using pl = pair<ll, ll>;
using vpl = V<pl>;
using vl = V<ll>;
using db = long double;
template<class T> using pq = priority_queue<T, V<T>, greater<T>>;
const int MOD = 1e9 + 7;
const ll INFL = ll(1e17);
const int LG = 18;
const int nax = 3e4 + 10;
const int kax = 20;
const int SZ = nax * kax;
const int Z = SZ / 2;
using B = bitset<SZ>;
int main() {
cin.tie(0)->sync_with_stdio(0);
int N, K; cin >> N >> K;
int M = N; N += N;
vi deg(N); vi W(N);
V<set<pi>> adj(N); for(int i = 0; i < N; i++) {
int u, v, w; cin >> u >> v >> w; --u, --v, v += M;
W[i] = w;
adj[u].insert(mp(v, i));
adj[v].insert(mp(u, i));
}
queue<int> q; for(int i = 0; i < N; i++) {
if (!sz(adj[i])) {
cout << "NO" << nl;
exit(0-0);
}
if (sz(adj[i]) == 1) q.push(i);
}
int BAL = 0;
while(sz(q)) {
int u = q.front(); q.pop();
pi e = *begin(adj[u]);
adj[u].clear();
adj[e.f].erase(mp(u, e.s));
if (u < M) BAL += W[e.s];
else BAL -= W[e.s];
if (sz(adj[e.f]) == 1) q.push(e.f);
}
for(int i = 0; i < N; i++) {
if (sz(adj[i]) == 0) continue;
if (sz(adj[i]) != 2) {
cout << "NO" << nl;
exit(0-0);
}
}
int bal = 0;
function<void(int, int)> dfs = [&](int u, int d) {
if (sz(adj[u])) {
pi e = *begin(adj[u]);
adj[u].clear();
adj[e.f].erase(mp(u, e.s));
// cout << u << " " << e.s << endl;
bal += d * W[e.s];
dfs(e.f, -d);
}
};
vi X;
for(int u = 0; u < M; u++) if (sz(adj[u])) {
bal = 0; dfs(u, 1); X.pb(abs(bal));
}
B dp; dp[Z + BAL] = 1;
for(auto x : X) if (x) {
dp = (dp << x) | (dp >> x);
}
for(int x = 0; x < SZ; x++) if (dp[x]) {
// cout << x << endl;
if (abs(x - Z) <= K) {
cout << "YES" << nl;
exit(0-0);
}
}
cout << "NO" << nl;
exit(0-0);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
604 KB |
Output is correct |
| 2 |
Correct |
1 ms |
604 KB |
Output is correct |
| 3 |
Correct |
1 ms |
604 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
1 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
604 KB |
Output is correct |
| 7 |
Correct |
1 ms |
604 KB |
Output is correct |
| 8 |
Correct |
1 ms |
604 KB |
Output is correct |
| 9 |
Correct |
1 ms |
604 KB |
Output is correct |
| 10 |
Correct |
2 ms |
604 KB |
Output is correct |
| 11 |
Correct |
1 ms |
600 KB |
Output is correct |
| 12 |
Correct |
1 ms |
600 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| 14 |
Correct |
1 ms |
604 KB |
Output is correct |
| 15 |
Correct |
1 ms |
604 KB |
Output is correct |
| 16 |
Correct |
1 ms |
820 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
604 KB |
Output is correct |
| 20 |
Correct |
1 ms |
604 KB |
Output is correct |
| 21 |
Correct |
0 ms |
604 KB |
Output is correct |
| 22 |
Correct |
1 ms |
604 KB |
Output is correct |
| 23 |
Correct |
1 ms |
604 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
604 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
604 KB |
Output is correct |
| 2 |
Correct |
1 ms |
604 KB |
Output is correct |
| 3 |
Correct |
1 ms |
604 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
1 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
604 KB |
Output is correct |
| 7 |
Correct |
1 ms |
604 KB |
Output is correct |
| 8 |
Correct |
1 ms |
604 KB |
Output is correct |
| 9 |
Correct |
1 ms |
604 KB |
Output is correct |
| 10 |
Correct |
2 ms |
604 KB |
Output is correct |
| 11 |
Correct |
1 ms |
600 KB |
Output is correct |
| 12 |
Correct |
1 ms |
600 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| 14 |
Correct |
1 ms |
604 KB |
Output is correct |
| 15 |
Correct |
1 ms |
604 KB |
Output is correct |
| 16 |
Correct |
1 ms |
820 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
604 KB |
Output is correct |
| 20 |
Correct |
1 ms |
604 KB |
Output is correct |
| 21 |
Correct |
0 ms |
604 KB |
Output is correct |
| 22 |
Correct |
1 ms |
604 KB |
Output is correct |
| 23 |
Correct |
1 ms |
604 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
604 KB |
Output is correct |
| 26 |
Correct |
53 ms |
1372 KB |
Output is correct |
| 27 |
Correct |
9 ms |
1372 KB |
Output is correct |
| 28 |
Correct |
54 ms |
1424 KB |
Output is correct |
| 29 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 30 |
Correct |
54 ms |
1372 KB |
Output is correct |
| 31 |
Correct |
9 ms |
1372 KB |
Output is correct |
| 32 |
Correct |
53 ms |
1372 KB |
Output is correct |
| 33 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 34 |
Correct |
6 ms |
1372 KB |
Output is correct |
| 35 |
Correct |
13 ms |
1820 KB |
Output is correct |
| 36 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 37 |
Correct |
9 ms |
1368 KB |
Output is correct |
| 38 |
Correct |
54 ms |
1432 KB |
Output is correct |
| 39 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 40 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 41 |
Correct |
10 ms |
1368 KB |
Output is correct |
| 42 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 43 |
Correct |
11 ms |
1528 KB |
Output is correct |
| 44 |
Correct |
51 ms |
1368 KB |
Output is correct |
| 45 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 46 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 47 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 48 |
Correct |
28 ms |
1440 KB |
Output is correct |
| 49 |
Correct |
28 ms |
1416 KB |
Output is correct |
| 50 |
Correct |
55 ms |
1420 KB |
Output is correct |
| 51 |
Correct |
56 ms |
1372 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
3672 KB |
Output is correct |
| 2 |
Correct |
6 ms |
3928 KB |
Output is correct |
| 3 |
Correct |
7 ms |
3672 KB |
Output is correct |
| 4 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 5 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 6 |
Correct |
7 ms |
3672 KB |
Output is correct |
| 7 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 8 |
Correct |
6 ms |
3732 KB |
Output is correct |
| 9 |
Correct |
8 ms |
3676 KB |
Output is correct |
| 10 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 11 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 12 |
Correct |
6 ms |
3552 KB |
Output is correct |
| 13 |
Correct |
8 ms |
3840 KB |
Output is correct |
| 14 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 15 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 16 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 17 |
Correct |
6 ms |
3656 KB |
Output is correct |
| 18 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 19 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 20 |
Correct |
8 ms |
3764 KB |
Output is correct |
| 21 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 22 |
Correct |
9 ms |
3772 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
604 KB |
Output is correct |
| 2 |
Correct |
1 ms |
604 KB |
Output is correct |
| 3 |
Correct |
1 ms |
604 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
1 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
604 KB |
Output is correct |
| 7 |
Correct |
1 ms |
604 KB |
Output is correct |
| 8 |
Correct |
1 ms |
604 KB |
Output is correct |
| 9 |
Correct |
1 ms |
604 KB |
Output is correct |
| 10 |
Correct |
2 ms |
604 KB |
Output is correct |
| 11 |
Correct |
1 ms |
600 KB |
Output is correct |
| 12 |
Correct |
1 ms |
600 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| 14 |
Correct |
1 ms |
604 KB |
Output is correct |
| 15 |
Correct |
1 ms |
604 KB |
Output is correct |
| 16 |
Correct |
1 ms |
820 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
604 KB |
Output is correct |
| 20 |
Correct |
1 ms |
604 KB |
Output is correct |
| 21 |
Correct |
0 ms |
604 KB |
Output is correct |
| 22 |
Correct |
1 ms |
604 KB |
Output is correct |
| 23 |
Correct |
1 ms |
604 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
1 ms |
604 KB |
Output is correct |
| 26 |
Correct |
53 ms |
1372 KB |
Output is correct |
| 27 |
Correct |
9 ms |
1372 KB |
Output is correct |
| 28 |
Correct |
54 ms |
1424 KB |
Output is correct |
| 29 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 30 |
Correct |
54 ms |
1372 KB |
Output is correct |
| 31 |
Correct |
9 ms |
1372 KB |
Output is correct |
| 32 |
Correct |
53 ms |
1372 KB |
Output is correct |
| 33 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 34 |
Correct |
6 ms |
1372 KB |
Output is correct |
| 35 |
Correct |
13 ms |
1820 KB |
Output is correct |
| 36 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 37 |
Correct |
9 ms |
1368 KB |
Output is correct |
| 38 |
Correct |
54 ms |
1432 KB |
Output is correct |
| 39 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 40 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 41 |
Correct |
10 ms |
1368 KB |
Output is correct |
| 42 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 43 |
Correct |
11 ms |
1528 KB |
Output is correct |
| 44 |
Correct |
51 ms |
1368 KB |
Output is correct |
| 45 |
Correct |
10 ms |
1372 KB |
Output is correct |
| 46 |
Correct |
52 ms |
1372 KB |
Output is correct |
| 47 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 48 |
Correct |
28 ms |
1440 KB |
Output is correct |
| 49 |
Correct |
28 ms |
1416 KB |
Output is correct |
| 50 |
Correct |
55 ms |
1420 KB |
Output is correct |
| 51 |
Correct |
56 ms |
1372 KB |
Output is correct |
| 52 |
Correct |
7 ms |
3672 KB |
Output is correct |
| 53 |
Correct |
6 ms |
3928 KB |
Output is correct |
| 54 |
Correct |
7 ms |
3672 KB |
Output is correct |
| 55 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 56 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 57 |
Correct |
7 ms |
3672 KB |
Output is correct |
| 58 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 59 |
Correct |
6 ms |
3732 KB |
Output is correct |
| 60 |
Correct |
8 ms |
3676 KB |
Output is correct |
| 61 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 62 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 63 |
Correct |
6 ms |
3552 KB |
Output is correct |
| 64 |
Correct |
8 ms |
3840 KB |
Output is correct |
| 65 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 66 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 67 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 68 |
Correct |
6 ms |
3656 KB |
Output is correct |
| 69 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 70 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 71 |
Correct |
8 ms |
3764 KB |
Output is correct |
| 72 |
Correct |
6 ms |
3676 KB |
Output is correct |
| 73 |
Correct |
9 ms |
3772 KB |
Output is correct |
| 74 |
Correct |
788 ms |
9984 KB |
Output is correct |
| 75 |
Correct |
55 ms |
9564 KB |
Output is correct |
| 76 |
Correct |
765 ms |
9984 KB |
Output is correct |
| 77 |
Correct |
62 ms |
9556 KB |
Output is correct |
| 78 |
Correct |
774 ms |
9984 KB |
Output is correct |
| 79 |
Correct |
792 ms |
9988 KB |
Output is correct |
| 80 |
Correct |
55 ms |
9560 KB |
Output is correct |
| 81 |
Correct |
55 ms |
9564 KB |
Output is correct |
| 82 |
Correct |
812 ms |
9740 KB |
Output is correct |
| 83 |
Correct |
779 ms |
9984 KB |
Output is correct |
| 84 |
Correct |
68 ms |
9740 KB |
Output is correct |
| 85 |
Correct |
787 ms |
9988 KB |
Output is correct |
| 86 |
Correct |
70 ms |
9680 KB |
Output is correct |
| 87 |
Correct |
770 ms |
9812 KB |
Output is correct |
| 88 |
Correct |
54 ms |
9564 KB |
Output is correct |
| 89 |
Correct |
780 ms |
9988 KB |
Output is correct |
| 90 |
Correct |
53 ms |
9564 KB |
Output is correct |
| 91 |
Correct |
784 ms |
9976 KB |
Output is correct |
| 92 |
Correct |
55 ms |
9552 KB |
Output is correct |
| 93 |
Correct |
783 ms |
10144 KB |
Output is correct |
| 94 |
Correct |
19 ms |
9564 KB |
Output is correct |
| 95 |
Correct |
402 ms |
9900 KB |
Output is correct |
| 96 |
Correct |
404 ms |
9908 KB |
Output is correct |
| 97 |
Correct |
832 ms |
9984 KB |
Output is correct |
| 98 |
Correct |
841 ms |
9988 KB |
Output is correct |
