#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
//#define int long long
//#pragma GCC optimize("Ofast")
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
typedef pair < int, int > pii;
typedef unsigned long long ull;
typedef vector < pii > vpii;
typedef vector < int > vi;
typedef long double ldb;
typedef long long ll;
typedef double db;
typedef tree<pii, null_type, less<pii>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 1055;
const int inf = 1e9, maxn = 4e5 + 148, mod = 1e9 + 7, N = 1e5 + 11;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const db eps = 1e-12, pi = 3.14159265359;
const ll INF = 1e18;
int timer;
struct DSU {
int p[N], cnt[N];
stack < int > st;
void init (int n) {
for (int i = 1; i <= n; ++i) {
p[i] = i;
cnt[i] = 1;
}
while (sz(st))
st.pop();
}
int get (int v) {
return p[v] == v ? v : get(p[v]);
}
void merge (int v, int u) {
v = get(v), u = get(u);
if (v == u)
return;
if (cnt[v] < cnt[u])
swap(v, u);
st.push(u);
p[u] = v;
cnt[v] += cnt[u];
++timer;
}
void undo () {
int u = st.top();
int v = p[u];
st.pop();
p[u] = u;
cnt[v] -= cnt[u];
}
} T;
vi nw;
vpii prv;
bool was[N];
vector < pair < pii, int > > a, b;
int n, m, q, v[N], u[N], w[N], tp, x, y, ww[N], res[N];
main () {
fastio
scanf("%d%d", &n, &m);
for (int i = 1; i <= m; ++i)
scanf("%d%d%d", &v[i], &u[i], &w[i]);
scanf("%d", &q);
for (int i = 1; i <= q; ++i) {
scanf("%d%d%d", &tp, &x, &y);
if (tp == 1)
a.pb({{x, y}, i});
else
b.pb({{y, x}, i});
if (i % block == 0 || i == q) {
T.init(n);
for (int i = 1; i <= m; ++i)
was[i] = 0;
for (auto x : a)
was[x.f.f] = 1;
sort(all(b));
reverse(all(b));
for (int i = 1; i <= m; ++i)
if (!was[i])
prv.pb({w[i], i});
else
nw.pb(i);
sort(all(prv));
reverse(all(prv));
int j = 0;
for (auto x : b) {
while (j < sz(prv) && prv[j].f >= x.f.f) {
T.merge(v[prv[j].s], u[prv[j].s]);
++j;
}
for (auto y : nw)
ww[y] = w[y];
for (auto y : a)
if (y.s <= x.s)
ww[y.f.f] = y.f.s;
timer = 0;
for (auto y : nw)
if (ww[y] >= x.f.f)
T.merge(v[y], u[y]);
res[x.s] = T.cnt[T.get(x.f.s)];
while (timer--)
T.undo();
}
for (auto y : a)
w[y.f.f] = y.f.s;
a.clear();
b.clear();
nw.clear();
prv.clear();
}
}
for (int i = 1; i <= q; ++i)
if (res[i])
printf("%d\n", res[i]);
}
Compilation message
bridges.cpp:92:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main () {
^
bridges.cpp: In function 'int main()':
bridges.cpp:94:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &m);
~~~~~^~~~~~~~~~~~~~~~
bridges.cpp:96:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d", &v[i], &u[i], &w[i]);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bridges.cpp:98:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &q);
~~~~~^~~~~~~~~~
bridges.cpp:100:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d", &tp, &x, &y);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Correct |
34 ms |
688 KB |
Output is correct |
4 |
Correct |
8 ms |
640 KB |
Output is correct |
5 |
Correct |
17 ms |
640 KB |
Output is correct |
6 |
Correct |
17 ms |
640 KB |
Output is correct |
7 |
Correct |
23 ms |
512 KB |
Output is correct |
8 |
Correct |
22 ms |
640 KB |
Output is correct |
9 |
Correct |
21 ms |
512 KB |
Output is correct |
10 |
Correct |
18 ms |
640 KB |
Output is correct |
11 |
Correct |
18 ms |
640 KB |
Output is correct |
12 |
Correct |
25 ms |
640 KB |
Output is correct |
13 |
Correct |
23 ms |
640 KB |
Output is correct |
14 |
Correct |
22 ms |
640 KB |
Output is correct |
15 |
Correct |
20 ms |
640 KB |
Output is correct |
16 |
Correct |
19 ms |
512 KB |
Output is correct |
17 |
Correct |
19 ms |
512 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1519 ms |
2716 KB |
Output is correct |
2 |
Correct |
1488 ms |
3452 KB |
Output is correct |
3 |
Correct |
1481 ms |
3452 KB |
Output is correct |
4 |
Correct |
1465 ms |
3684 KB |
Output is correct |
5 |
Correct |
1502 ms |
3588 KB |
Output is correct |
6 |
Correct |
2085 ms |
4100 KB |
Output is correct |
7 |
Correct |
2023 ms |
4136 KB |
Output is correct |
8 |
Correct |
2069 ms |
3684 KB |
Output is correct |
9 |
Correct |
48 ms |
1400 KB |
Output is correct |
10 |
Correct |
1449 ms |
3404 KB |
Output is correct |
11 |
Correct |
1436 ms |
3332 KB |
Output is correct |
12 |
Correct |
1235 ms |
4076 KB |
Output is correct |
13 |
Correct |
1157 ms |
3580 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1242 ms |
2252 KB |
Output is correct |
2 |
Correct |
869 ms |
1912 KB |
Output is correct |
3 |
Correct |
1423 ms |
2816 KB |
Output is correct |
4 |
Correct |
1174 ms |
2824 KB |
Output is correct |
5 |
Correct |
48 ms |
1400 KB |
Output is correct |
6 |
Correct |
1367 ms |
2800 KB |
Output is correct |
7 |
Correct |
1125 ms |
2648 KB |
Output is correct |
8 |
Correct |
983 ms |
2696 KB |
Output is correct |
9 |
Correct |
758 ms |
2816 KB |
Output is correct |
10 |
Correct |
676 ms |
2816 KB |
Output is correct |
11 |
Correct |
766 ms |
2688 KB |
Output is correct |
12 |
Correct |
679 ms |
2652 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1564 ms |
3980 KB |
Output is correct |
2 |
Correct |
48 ms |
1656 KB |
Output is correct |
3 |
Correct |
171 ms |
3464 KB |
Output is correct |
4 |
Correct |
138 ms |
3696 KB |
Output is correct |
5 |
Correct |
1485 ms |
5512 KB |
Output is correct |
6 |
Correct |
1468 ms |
4936 KB |
Output is correct |
7 |
Correct |
1462 ms |
5356 KB |
Output is correct |
8 |
Correct |
758 ms |
3716 KB |
Output is correct |
9 |
Correct |
744 ms |
3824 KB |
Output is correct |
10 |
Correct |
761 ms |
4080 KB |
Output is correct |
11 |
Correct |
1196 ms |
4332 KB |
Output is correct |
12 |
Correct |
1123 ms |
4332 KB |
Output is correct |
13 |
Correct |
1154 ms |
4672 KB |
Output is correct |
14 |
Correct |
1241 ms |
5328 KB |
Output is correct |
15 |
Correct |
1364 ms |
5352 KB |
Output is correct |
16 |
Correct |
1559 ms |
5172 KB |
Output is correct |
17 |
Correct |
1554 ms |
5032 KB |
Output is correct |
18 |
Correct |
1551 ms |
4948 KB |
Output is correct |
19 |
Correct |
1482 ms |
4972 KB |
Output is correct |
20 |
Correct |
1284 ms |
4944 KB |
Output is correct |
21 |
Correct |
1282 ms |
4960 KB |
Output is correct |
22 |
Correct |
1485 ms |
5352 KB |
Output is correct |
23 |
Correct |
1344 ms |
4600 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1519 ms |
2716 KB |
Output is correct |
2 |
Correct |
1488 ms |
3452 KB |
Output is correct |
3 |
Correct |
1481 ms |
3452 KB |
Output is correct |
4 |
Correct |
1465 ms |
3684 KB |
Output is correct |
5 |
Correct |
1502 ms |
3588 KB |
Output is correct |
6 |
Correct |
2085 ms |
4100 KB |
Output is correct |
7 |
Correct |
2023 ms |
4136 KB |
Output is correct |
8 |
Correct |
2069 ms |
3684 KB |
Output is correct |
9 |
Correct |
48 ms |
1400 KB |
Output is correct |
10 |
Correct |
1449 ms |
3404 KB |
Output is correct |
11 |
Correct |
1436 ms |
3332 KB |
Output is correct |
12 |
Correct |
1235 ms |
4076 KB |
Output is correct |
13 |
Correct |
1157 ms |
3580 KB |
Output is correct |
14 |
Correct |
1242 ms |
2252 KB |
Output is correct |
15 |
Correct |
869 ms |
1912 KB |
Output is correct |
16 |
Correct |
1423 ms |
2816 KB |
Output is correct |
17 |
Correct |
1174 ms |
2824 KB |
Output is correct |
18 |
Correct |
48 ms |
1400 KB |
Output is correct |
19 |
Correct |
1367 ms |
2800 KB |
Output is correct |
20 |
Correct |
1125 ms |
2648 KB |
Output is correct |
21 |
Correct |
983 ms |
2696 KB |
Output is correct |
22 |
Correct |
758 ms |
2816 KB |
Output is correct |
23 |
Correct |
676 ms |
2816 KB |
Output is correct |
24 |
Correct |
766 ms |
2688 KB |
Output is correct |
25 |
Correct |
679 ms |
2652 KB |
Output is correct |
26 |
Correct |
1518 ms |
3580 KB |
Output is correct |
27 |
Correct |
1894 ms |
3748 KB |
Output is correct |
28 |
Correct |
1686 ms |
3616 KB |
Output is correct |
29 |
Correct |
1200 ms |
3592 KB |
Output is correct |
30 |
Correct |
1887 ms |
3524 KB |
Output is correct |
31 |
Correct |
1883 ms |
3628 KB |
Output is correct |
32 |
Correct |
1864 ms |
3712 KB |
Output is correct |
33 |
Correct |
1591 ms |
3716 KB |
Output is correct |
34 |
Correct |
1622 ms |
3648 KB |
Output is correct |
35 |
Correct |
1614 ms |
3756 KB |
Output is correct |
36 |
Correct |
1244 ms |
3728 KB |
Output is correct |
37 |
Correct |
1255 ms |
3792 KB |
Output is correct |
38 |
Correct |
1209 ms |
3704 KB |
Output is correct |
39 |
Correct |
931 ms |
3928 KB |
Output is correct |
40 |
Correct |
913 ms |
3708 KB |
Output is correct |
41 |
Correct |
918 ms |
3524 KB |
Output is correct |
42 |
Correct |
936 ms |
3452 KB |
Output is correct |
43 |
Correct |
908 ms |
3452 KB |
Output is correct |
44 |
Correct |
912 ms |
3448 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Correct |
34 ms |
688 KB |
Output is correct |
4 |
Correct |
8 ms |
640 KB |
Output is correct |
5 |
Correct |
17 ms |
640 KB |
Output is correct |
6 |
Correct |
17 ms |
640 KB |
Output is correct |
7 |
Correct |
23 ms |
512 KB |
Output is correct |
8 |
Correct |
22 ms |
640 KB |
Output is correct |
9 |
Correct |
21 ms |
512 KB |
Output is correct |
10 |
Correct |
18 ms |
640 KB |
Output is correct |
11 |
Correct |
18 ms |
640 KB |
Output is correct |
12 |
Correct |
25 ms |
640 KB |
Output is correct |
13 |
Correct |
23 ms |
640 KB |
Output is correct |
14 |
Correct |
22 ms |
640 KB |
Output is correct |
15 |
Correct |
20 ms |
640 KB |
Output is correct |
16 |
Correct |
19 ms |
512 KB |
Output is correct |
17 |
Correct |
19 ms |
512 KB |
Output is correct |
18 |
Correct |
1519 ms |
2716 KB |
Output is correct |
19 |
Correct |
1488 ms |
3452 KB |
Output is correct |
20 |
Correct |
1481 ms |
3452 KB |
Output is correct |
21 |
Correct |
1465 ms |
3684 KB |
Output is correct |
22 |
Correct |
1502 ms |
3588 KB |
Output is correct |
23 |
Correct |
2085 ms |
4100 KB |
Output is correct |
24 |
Correct |
2023 ms |
4136 KB |
Output is correct |
25 |
Correct |
2069 ms |
3684 KB |
Output is correct |
26 |
Correct |
48 ms |
1400 KB |
Output is correct |
27 |
Correct |
1449 ms |
3404 KB |
Output is correct |
28 |
Correct |
1436 ms |
3332 KB |
Output is correct |
29 |
Correct |
1235 ms |
4076 KB |
Output is correct |
30 |
Correct |
1157 ms |
3580 KB |
Output is correct |
31 |
Correct |
1242 ms |
2252 KB |
Output is correct |
32 |
Correct |
869 ms |
1912 KB |
Output is correct |
33 |
Correct |
1423 ms |
2816 KB |
Output is correct |
34 |
Correct |
1174 ms |
2824 KB |
Output is correct |
35 |
Correct |
48 ms |
1400 KB |
Output is correct |
36 |
Correct |
1367 ms |
2800 KB |
Output is correct |
37 |
Correct |
1125 ms |
2648 KB |
Output is correct |
38 |
Correct |
983 ms |
2696 KB |
Output is correct |
39 |
Correct |
758 ms |
2816 KB |
Output is correct |
40 |
Correct |
676 ms |
2816 KB |
Output is correct |
41 |
Correct |
766 ms |
2688 KB |
Output is correct |
42 |
Correct |
679 ms |
2652 KB |
Output is correct |
43 |
Correct |
1564 ms |
3980 KB |
Output is correct |
44 |
Correct |
48 ms |
1656 KB |
Output is correct |
45 |
Correct |
171 ms |
3464 KB |
Output is correct |
46 |
Correct |
138 ms |
3696 KB |
Output is correct |
47 |
Correct |
1485 ms |
5512 KB |
Output is correct |
48 |
Correct |
1468 ms |
4936 KB |
Output is correct |
49 |
Correct |
1462 ms |
5356 KB |
Output is correct |
50 |
Correct |
758 ms |
3716 KB |
Output is correct |
51 |
Correct |
744 ms |
3824 KB |
Output is correct |
52 |
Correct |
761 ms |
4080 KB |
Output is correct |
53 |
Correct |
1196 ms |
4332 KB |
Output is correct |
54 |
Correct |
1123 ms |
4332 KB |
Output is correct |
55 |
Correct |
1154 ms |
4672 KB |
Output is correct |
56 |
Correct |
1241 ms |
5328 KB |
Output is correct |
57 |
Correct |
1364 ms |
5352 KB |
Output is correct |
58 |
Correct |
1559 ms |
5172 KB |
Output is correct |
59 |
Correct |
1554 ms |
5032 KB |
Output is correct |
60 |
Correct |
1551 ms |
4948 KB |
Output is correct |
61 |
Correct |
1482 ms |
4972 KB |
Output is correct |
62 |
Correct |
1284 ms |
4944 KB |
Output is correct |
63 |
Correct |
1282 ms |
4960 KB |
Output is correct |
64 |
Correct |
1485 ms |
5352 KB |
Output is correct |
65 |
Correct |
1344 ms |
4600 KB |
Output is correct |
66 |
Correct |
1518 ms |
3580 KB |
Output is correct |
67 |
Correct |
1894 ms |
3748 KB |
Output is correct |
68 |
Correct |
1686 ms |
3616 KB |
Output is correct |
69 |
Correct |
1200 ms |
3592 KB |
Output is correct |
70 |
Correct |
1887 ms |
3524 KB |
Output is correct |
71 |
Correct |
1883 ms |
3628 KB |
Output is correct |
72 |
Correct |
1864 ms |
3712 KB |
Output is correct |
73 |
Correct |
1591 ms |
3716 KB |
Output is correct |
74 |
Correct |
1622 ms |
3648 KB |
Output is correct |
75 |
Correct |
1614 ms |
3756 KB |
Output is correct |
76 |
Correct |
1244 ms |
3728 KB |
Output is correct |
77 |
Correct |
1255 ms |
3792 KB |
Output is correct |
78 |
Correct |
1209 ms |
3704 KB |
Output is correct |
79 |
Correct |
931 ms |
3928 KB |
Output is correct |
80 |
Correct |
913 ms |
3708 KB |
Output is correct |
81 |
Correct |
918 ms |
3524 KB |
Output is correct |
82 |
Correct |
936 ms |
3452 KB |
Output is correct |
83 |
Correct |
908 ms |
3452 KB |
Output is correct |
84 |
Correct |
912 ms |
3448 KB |
Output is correct |
85 |
Correct |
2160 ms |
4704 KB |
Output is correct |
86 |
Correct |
211 ms |
3448 KB |
Output is correct |
87 |
Correct |
171 ms |
3464 KB |
Output is correct |
88 |
Correct |
1956 ms |
4664 KB |
Output is correct |
89 |
Correct |
2113 ms |
4700 KB |
Output is correct |
90 |
Correct |
2044 ms |
4340 KB |
Output is correct |
91 |
Correct |
1665 ms |
3560 KB |
Output is correct |
92 |
Correct |
1662 ms |
3708 KB |
Output is correct |
93 |
Correct |
2341 ms |
3688 KB |
Output is correct |
94 |
Correct |
1830 ms |
4344 KB |
Output is correct |
95 |
Correct |
1877 ms |
4460 KB |
Output is correct |
96 |
Correct |
1930 ms |
4480 KB |
Output is correct |
97 |
Correct |
1636 ms |
4852 KB |
Output is correct |
98 |
Correct |
1703 ms |
4228 KB |
Output is correct |
99 |
Correct |
2101 ms |
5248 KB |
Output is correct |
100 |
Correct |
2094 ms |
4984 KB |
Output is correct |
101 |
Correct |
2186 ms |
5028 KB |
Output is correct |
102 |
Correct |
2177 ms |
4992 KB |
Output is correct |
103 |
Correct |
2114 ms |
4728 KB |
Output is correct |
104 |
Correct |
2099 ms |
4472 KB |
Output is correct |
105 |
Correct |
1651 ms |
3960 KB |
Output is correct |
106 |
Correct |
1325 ms |
3704 KB |
Output is correct |
107 |
Correct |
1466 ms |
4052 KB |
Output is correct |
108 |
Correct |
2053 ms |
4148 KB |
Output is correct |
109 |
Correct |
1911 ms |
3600 KB |
Output is correct |