/* code by PixelCat */
/* meow owo */
#include <bits/stdc++.h>
#define int LL //__int128
#define double long double
using namespace std;
using LL = long long;
// using i128 = __int128_t;
using ull = unsigned long long;
using pii = pair<int, int>;
#define For(i, a, b) for (int i = a; i <= b; i++)
#define Fors(i, a, b, s) for (int i = a; i <= b; i += s)
#define Forr(i, a, b) for (int i = a; i >= b; i--)
#define F first
#define S second
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define mkp make_pair
#define MOD (int)(998244353)
// #define MOD (int)((LL)1'000'000'007)
#define INF (int)(4e18)
#define EPS (1e-6)
namespace PixelCat {
#ifdef NYAOWO
#include "/home/pixelcat/yodayo/meow/library/debug.hpp"
inline void USACO(const string &s) {
cerr << "USACO: " << s << "\n";
}
#else
#define debug(...)
inline void timer() {}
inline void USACO(const string &s) {
freopen((s + ".in").c_str(), "r", stdin);
freopen((s + ".out").c_str(), "w", stdout);
}
#endif
inline void NYA() {
ios::sync_with_stdio(false);
cin.tie(0);
}
inline int gcd(int a, int b) {
return __gcd(a, b);
}
inline int lcm(int a, int b) {
return a / gcd(a, b) * b;
}
int fpow(int b, int p, const int &mod = MOD) {
int ans = 1;
for (; p; p >>= 1, b = b * b % mod)
if (p & 1) ans = ans * b % mod;
return ans;
}
template <typename T>
inline void chmin(T &_a, const T &_b) {
if (_b < _a) _a = _b;
}
template <typename T>
inline void chmax(T &_a, const T &_b) {
if (_b > _a) _a = _b;
}
mt19937_64 rng(
chrono::steady_clock::now().time_since_epoch().count());
} // namespace PixelCat
using namespace PixelCat;
const int MAXN = 50010;
const int MAXM = 100010;
const int MAXQ = 100010;
const int BLK = 600;
struct DSU {
int p[MAXN];
int siz[MAXN];
vector<pii> op;
void init() {
memset(p, 0, sizeof(p));
fill(siz, siz + MAXN, 1);
op.clear();
}
int find(int n) {
if(!p[n]) return n;
return find(p[n]);
}
void uni(int a, int b, bool rec = false) {
a = find(a); b = find(b);
if(siz[a] < siz[b]) swap(a, b);
if(rec) op.eb(a, b);
if(a == b) return;
p[b] = a;
siz[a] += siz[b];
}
void undo() {
int a, b;
tie(a, b) = op.back();
op.pop_back();
if(a == b) return;
siz[a] -= siz[b];
p[b] = 0;
}
void undo_all() {
while(sz(op)) undo();
}
int size(int n) {
return siz[find(n)];
}
} dsu;
struct Query {
int op, x, y;
// op: 0 for update, 1~q for queries
} qry[MAXQ];
int ans[MAXQ];
pii ed[MAXM];
int w[MAXM];
void solve(int m, int l, int r) {
// identify bad edges
// sort good edges
// sort queries
vector<pair<pii, int>> e;
For(i, 1, m) e.eb(ed[i], w[i]);
vector<int> bad;
vector<pii> vq; // {index, weight}
For(i, l, r) {
if(!qry[i].op) {
int eid = qry[i].x;
e[eid - 1].S = -1;
bad.eb(eid);
} else {
vq.eb(i, qry[i].y);
}
}
sort(all(bad)); bad.erase(unique(all(bad)), bad.end());
sort(all(e), [&](pair<pii, int> &a, pair<pii, int> &b) {
return a.S < b.S;
});
sort(all(vq), [&](pii &a, pii &b) {
return a.S < b.S;
});
dsu.init();
// do queries while adding edges
while(!vq.empty()) {
int qid = vq.back().F;
Query &q = qry[qid];
vq.pop_back();
// add good edges
while(sz(e) && e.back().S >= q.y) {
pii p = e.back().F;
e.pop_back();
dsu.uni(p.F, p.S);
}
// update bad edges & add to dsu
For(i, l, qid) if(!qry[i].op) {
swap(w[qry[i].x], qry[i].y);
}
for(int &eid:bad) if(w[eid] >= q.y) {
dsu.uni(ed[eid].F, ed[eid].S, true);
}
// make query
ans[qid] = dsu.size(q.x);
// recover bad edges & undo dsu
dsu.undo_all();
Forr(i, qid, l) if(!qry[i].op) {
swap(w[qry[i].x], qry[i].y);
}
}
// actually make updates
For(i, l, r) if(!qry[i].op) {
Query &q = qry[i];
w[q.x] = q.y;
}
}
int32_t main() {
NYA();
// nyaacho >/////<
int n, m; cin >> n >> m;
For(i, 1, m) {
cin >> ed[i].F >> ed[i].S >> w[i];
}
int q; cin >> q;
For(i, 1, q) {
auto &qr = qry[i];
cin >> qr.op >> qr.x >> qr.y;
qr.op--;
}
for(int i = 1; i <= q; i += BLK) {
solve(m, i, min(i + BLK - 1, q));
}
For(i, 1, q) if(ans[i]) cout << ans[i] << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1108 KB |
Output is correct |
2 |
Correct |
1 ms |
1108 KB |
Output is correct |
3 |
Correct |
23 ms |
1688 KB |
Output is correct |
4 |
Correct |
9 ms |
1620 KB |
Output is correct |
5 |
Correct |
16 ms |
1620 KB |
Output is correct |
6 |
Correct |
13 ms |
1560 KB |
Output is correct |
7 |
Correct |
14 ms |
1492 KB |
Output is correct |
8 |
Correct |
15 ms |
1620 KB |
Output is correct |
9 |
Correct |
14 ms |
1492 KB |
Output is correct |
10 |
Correct |
15 ms |
1620 KB |
Output is correct |
11 |
Correct |
15 ms |
1620 KB |
Output is correct |
12 |
Correct |
16 ms |
1604 KB |
Output is correct |
13 |
Correct |
19 ms |
1620 KB |
Output is correct |
14 |
Correct |
17 ms |
1560 KB |
Output is correct |
15 |
Correct |
17 ms |
1620 KB |
Output is correct |
16 |
Correct |
15 ms |
1492 KB |
Output is correct |
17 |
Correct |
15 ms |
1496 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1297 ms |
8536 KB |
Output is correct |
2 |
Correct |
1294 ms |
8448 KB |
Output is correct |
3 |
Correct |
1312 ms |
8572 KB |
Output is correct |
4 |
Correct |
1299 ms |
8564 KB |
Output is correct |
5 |
Correct |
1253 ms |
8808 KB |
Output is correct |
6 |
Correct |
1539 ms |
8392 KB |
Output is correct |
7 |
Correct |
1525 ms |
8496 KB |
Output is correct |
8 |
Correct |
1545 ms |
8520 KB |
Output is correct |
9 |
Correct |
83 ms |
4612 KB |
Output is correct |
10 |
Correct |
873 ms |
8400 KB |
Output is correct |
11 |
Correct |
867 ms |
8496 KB |
Output is correct |
12 |
Correct |
1228 ms |
8376 KB |
Output is correct |
13 |
Correct |
1146 ms |
8480 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
884 ms |
6808 KB |
Output is correct |
2 |
Correct |
491 ms |
5112 KB |
Output is correct |
3 |
Correct |
982 ms |
6896 KB |
Output is correct |
4 |
Correct |
901 ms |
6944 KB |
Output is correct |
5 |
Correct |
83 ms |
4620 KB |
Output is correct |
6 |
Correct |
934 ms |
6780 KB |
Output is correct |
7 |
Correct |
910 ms |
6796 KB |
Output is correct |
8 |
Correct |
834 ms |
7072 KB |
Output is correct |
9 |
Correct |
792 ms |
6928 KB |
Output is correct |
10 |
Correct |
754 ms |
6868 KB |
Output is correct |
11 |
Correct |
717 ms |
6840 KB |
Output is correct |
12 |
Correct |
679 ms |
6904 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2195 ms |
12564 KB |
Output is correct |
2 |
Correct |
82 ms |
4688 KB |
Output is correct |
3 |
Correct |
231 ms |
9476 KB |
Output is correct |
4 |
Correct |
131 ms |
9460 KB |
Output is correct |
5 |
Correct |
1413 ms |
12456 KB |
Output is correct |
6 |
Correct |
2146 ms |
12300 KB |
Output is correct |
7 |
Correct |
1388 ms |
12336 KB |
Output is correct |
8 |
Correct |
1018 ms |
8480 KB |
Output is correct |
9 |
Correct |
1000 ms |
8624 KB |
Output is correct |
10 |
Correct |
1026 ms |
8376 KB |
Output is correct |
11 |
Correct |
1656 ms |
11324 KB |
Output is correct |
12 |
Correct |
1655 ms |
11252 KB |
Output is correct |
13 |
Correct |
1698 ms |
11336 KB |
Output is correct |
14 |
Correct |
1346 ms |
12544 KB |
Output is correct |
15 |
Correct |
1389 ms |
12420 KB |
Output is correct |
16 |
Correct |
2196 ms |
12556 KB |
Output is correct |
17 |
Correct |
2212 ms |
12696 KB |
Output is correct |
18 |
Correct |
2176 ms |
12236 KB |
Output is correct |
19 |
Correct |
2162 ms |
12568 KB |
Output is correct |
20 |
Correct |
1881 ms |
11496 KB |
Output is correct |
21 |
Correct |
1968 ms |
11580 KB |
Output is correct |
22 |
Correct |
2080 ms |
12244 KB |
Output is correct |
23 |
Correct |
1348 ms |
11528 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1297 ms |
8536 KB |
Output is correct |
2 |
Correct |
1294 ms |
8448 KB |
Output is correct |
3 |
Correct |
1312 ms |
8572 KB |
Output is correct |
4 |
Correct |
1299 ms |
8564 KB |
Output is correct |
5 |
Correct |
1253 ms |
8808 KB |
Output is correct |
6 |
Correct |
1539 ms |
8392 KB |
Output is correct |
7 |
Correct |
1525 ms |
8496 KB |
Output is correct |
8 |
Correct |
1545 ms |
8520 KB |
Output is correct |
9 |
Correct |
83 ms |
4612 KB |
Output is correct |
10 |
Correct |
873 ms |
8400 KB |
Output is correct |
11 |
Correct |
867 ms |
8496 KB |
Output is correct |
12 |
Correct |
1228 ms |
8376 KB |
Output is correct |
13 |
Correct |
1146 ms |
8480 KB |
Output is correct |
14 |
Correct |
884 ms |
6808 KB |
Output is correct |
15 |
Correct |
491 ms |
5112 KB |
Output is correct |
16 |
Correct |
982 ms |
6896 KB |
Output is correct |
17 |
Correct |
901 ms |
6944 KB |
Output is correct |
18 |
Correct |
83 ms |
4620 KB |
Output is correct |
19 |
Correct |
934 ms |
6780 KB |
Output is correct |
20 |
Correct |
910 ms |
6796 KB |
Output is correct |
21 |
Correct |
834 ms |
7072 KB |
Output is correct |
22 |
Correct |
792 ms |
6928 KB |
Output is correct |
23 |
Correct |
754 ms |
6868 KB |
Output is correct |
24 |
Correct |
717 ms |
6840 KB |
Output is correct |
25 |
Correct |
679 ms |
6904 KB |
Output is correct |
26 |
Correct |
1231 ms |
8592 KB |
Output is correct |
27 |
Correct |
1478 ms |
8768 KB |
Output is correct |
28 |
Correct |
1394 ms |
8500 KB |
Output is correct |
29 |
Correct |
1202 ms |
8672 KB |
Output is correct |
30 |
Correct |
1471 ms |
8384 KB |
Output is correct |
31 |
Correct |
1448 ms |
8600 KB |
Output is correct |
32 |
Correct |
1457 ms |
8580 KB |
Output is correct |
33 |
Correct |
1389 ms |
8392 KB |
Output is correct |
34 |
Correct |
1417 ms |
8428 KB |
Output is correct |
35 |
Correct |
1489 ms |
8384 KB |
Output is correct |
36 |
Correct |
1409 ms |
8472 KB |
Output is correct |
37 |
Correct |
1306 ms |
8700 KB |
Output is correct |
38 |
Correct |
1162 ms |
8952 KB |
Output is correct |
39 |
Correct |
1133 ms |
8680 KB |
Output is correct |
40 |
Correct |
1182 ms |
8632 KB |
Output is correct |
41 |
Correct |
1234 ms |
8644 KB |
Output is correct |
42 |
Correct |
1135 ms |
8676 KB |
Output is correct |
43 |
Correct |
1183 ms |
8664 KB |
Output is correct |
44 |
Correct |
1146 ms |
8744 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1108 KB |
Output is correct |
2 |
Correct |
1 ms |
1108 KB |
Output is correct |
3 |
Correct |
23 ms |
1688 KB |
Output is correct |
4 |
Correct |
9 ms |
1620 KB |
Output is correct |
5 |
Correct |
16 ms |
1620 KB |
Output is correct |
6 |
Correct |
13 ms |
1560 KB |
Output is correct |
7 |
Correct |
14 ms |
1492 KB |
Output is correct |
8 |
Correct |
15 ms |
1620 KB |
Output is correct |
9 |
Correct |
14 ms |
1492 KB |
Output is correct |
10 |
Correct |
15 ms |
1620 KB |
Output is correct |
11 |
Correct |
15 ms |
1620 KB |
Output is correct |
12 |
Correct |
16 ms |
1604 KB |
Output is correct |
13 |
Correct |
19 ms |
1620 KB |
Output is correct |
14 |
Correct |
17 ms |
1560 KB |
Output is correct |
15 |
Correct |
17 ms |
1620 KB |
Output is correct |
16 |
Correct |
15 ms |
1492 KB |
Output is correct |
17 |
Correct |
15 ms |
1496 KB |
Output is correct |
18 |
Correct |
1297 ms |
8536 KB |
Output is correct |
19 |
Correct |
1294 ms |
8448 KB |
Output is correct |
20 |
Correct |
1312 ms |
8572 KB |
Output is correct |
21 |
Correct |
1299 ms |
8564 KB |
Output is correct |
22 |
Correct |
1253 ms |
8808 KB |
Output is correct |
23 |
Correct |
1539 ms |
8392 KB |
Output is correct |
24 |
Correct |
1525 ms |
8496 KB |
Output is correct |
25 |
Correct |
1545 ms |
8520 KB |
Output is correct |
26 |
Correct |
83 ms |
4612 KB |
Output is correct |
27 |
Correct |
873 ms |
8400 KB |
Output is correct |
28 |
Correct |
867 ms |
8496 KB |
Output is correct |
29 |
Correct |
1228 ms |
8376 KB |
Output is correct |
30 |
Correct |
1146 ms |
8480 KB |
Output is correct |
31 |
Correct |
884 ms |
6808 KB |
Output is correct |
32 |
Correct |
491 ms |
5112 KB |
Output is correct |
33 |
Correct |
982 ms |
6896 KB |
Output is correct |
34 |
Correct |
901 ms |
6944 KB |
Output is correct |
35 |
Correct |
83 ms |
4620 KB |
Output is correct |
36 |
Correct |
934 ms |
6780 KB |
Output is correct |
37 |
Correct |
910 ms |
6796 KB |
Output is correct |
38 |
Correct |
834 ms |
7072 KB |
Output is correct |
39 |
Correct |
792 ms |
6928 KB |
Output is correct |
40 |
Correct |
754 ms |
6868 KB |
Output is correct |
41 |
Correct |
717 ms |
6840 KB |
Output is correct |
42 |
Correct |
679 ms |
6904 KB |
Output is correct |
43 |
Correct |
2195 ms |
12564 KB |
Output is correct |
44 |
Correct |
82 ms |
4688 KB |
Output is correct |
45 |
Correct |
231 ms |
9476 KB |
Output is correct |
46 |
Correct |
131 ms |
9460 KB |
Output is correct |
47 |
Correct |
1413 ms |
12456 KB |
Output is correct |
48 |
Correct |
2146 ms |
12300 KB |
Output is correct |
49 |
Correct |
1388 ms |
12336 KB |
Output is correct |
50 |
Correct |
1018 ms |
8480 KB |
Output is correct |
51 |
Correct |
1000 ms |
8624 KB |
Output is correct |
52 |
Correct |
1026 ms |
8376 KB |
Output is correct |
53 |
Correct |
1656 ms |
11324 KB |
Output is correct |
54 |
Correct |
1655 ms |
11252 KB |
Output is correct |
55 |
Correct |
1698 ms |
11336 KB |
Output is correct |
56 |
Correct |
1346 ms |
12544 KB |
Output is correct |
57 |
Correct |
1389 ms |
12420 KB |
Output is correct |
58 |
Correct |
2196 ms |
12556 KB |
Output is correct |
59 |
Correct |
2212 ms |
12696 KB |
Output is correct |
60 |
Correct |
2176 ms |
12236 KB |
Output is correct |
61 |
Correct |
2162 ms |
12568 KB |
Output is correct |
62 |
Correct |
1881 ms |
11496 KB |
Output is correct |
63 |
Correct |
1968 ms |
11580 KB |
Output is correct |
64 |
Correct |
2080 ms |
12244 KB |
Output is correct |
65 |
Correct |
1348 ms |
11528 KB |
Output is correct |
66 |
Correct |
1231 ms |
8592 KB |
Output is correct |
67 |
Correct |
1478 ms |
8768 KB |
Output is correct |
68 |
Correct |
1394 ms |
8500 KB |
Output is correct |
69 |
Correct |
1202 ms |
8672 KB |
Output is correct |
70 |
Correct |
1471 ms |
8384 KB |
Output is correct |
71 |
Correct |
1448 ms |
8600 KB |
Output is correct |
72 |
Correct |
1457 ms |
8580 KB |
Output is correct |
73 |
Correct |
1389 ms |
8392 KB |
Output is correct |
74 |
Correct |
1417 ms |
8428 KB |
Output is correct |
75 |
Correct |
1489 ms |
8384 KB |
Output is correct |
76 |
Correct |
1409 ms |
8472 KB |
Output is correct |
77 |
Correct |
1306 ms |
8700 KB |
Output is correct |
78 |
Correct |
1162 ms |
8952 KB |
Output is correct |
79 |
Correct |
1133 ms |
8680 KB |
Output is correct |
80 |
Correct |
1182 ms |
8632 KB |
Output is correct |
81 |
Correct |
1234 ms |
8644 KB |
Output is correct |
82 |
Correct |
1135 ms |
8676 KB |
Output is correct |
83 |
Correct |
1183 ms |
8664 KB |
Output is correct |
84 |
Correct |
1146 ms |
8744 KB |
Output is correct |
85 |
Correct |
2550 ms |
13132 KB |
Output is correct |
86 |
Correct |
258 ms |
10400 KB |
Output is correct |
87 |
Correct |
154 ms |
10356 KB |
Output is correct |
88 |
Correct |
1624 ms |
13088 KB |
Output is correct |
89 |
Correct |
2492 ms |
13196 KB |
Output is correct |
90 |
Correct |
1672 ms |
12912 KB |
Output is correct |
91 |
Correct |
1339 ms |
9180 KB |
Output is correct |
92 |
Correct |
1315 ms |
8908 KB |
Output is correct |
93 |
Correct |
1576 ms |
8924 KB |
Output is correct |
94 |
Correct |
2049 ms |
11744 KB |
Output is correct |
95 |
Correct |
2049 ms |
11848 KB |
Output is correct |
96 |
Correct |
2113 ms |
11724 KB |
Output is correct |
97 |
Correct |
1558 ms |
12840 KB |
Output is correct |
98 |
Correct |
1484 ms |
13044 KB |
Output is correct |
99 |
Correct |
2530 ms |
12944 KB |
Output is correct |
100 |
Correct |
2517 ms |
13004 KB |
Output is correct |
101 |
Correct |
2652 ms |
12964 KB |
Output is correct |
102 |
Correct |
2623 ms |
12800 KB |
Output is correct |
103 |
Correct |
2582 ms |
12024 KB |
Output is correct |
104 |
Correct |
2492 ms |
12040 KB |
Output is correct |
105 |
Correct |
2140 ms |
12116 KB |
Output is correct |
106 |
Correct |
1820 ms |
11696 KB |
Output is correct |
107 |
Correct |
2029 ms |
12016 KB |
Output is correct |
108 |
Correct |
2412 ms |
12608 KB |
Output is correct |
109 |
Correct |
1672 ms |
11988 KB |
Output is correct |