# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
521831 |
2022-02-03T09:20:10 Z |
XEMPLI5 |
Bridges (APIO19_bridges) |
C++17 |
|
2089 ms |
154088 KB |
#include <bits/stdc++.h>
using namespace std;
#define gc getchar_unlocked
#define fo(i, n) for (int i = 0; i < n; i++)
#define rfo(i, n) for (int i = n - 1; i >= 0; i--)
#define REP(i, a, b) for (int i = a; i < b; i++)
#define RREP(i, a, b) for (int i = a; i >= b; i--)
#define ll long long
#define si(x) scanf("%d", &x)
#define sl(x) scanf("%lld", &x)
#define ss(s) scanf("%s", s)
#define pi(x) printf("%d\n", x)
#define pl(x) printf("%lld\n", x)
#define ps(s) printf("%s\n", s)
#define deb(x) cout << #x << "=" << x << endl
#define deb2(x, y) cout << #x << "=" << x << "," << #y << "=" << y << endl
#define deb3(x, y, z) cout << #x << "=" << x << "," << #y << "=" << y << "," << #z << "=" << z << endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define clr(x) memset(x, 0, sizeof(x))
#define sortall(x) sort(all(x))
#define tr(it, a) for (auto it = a.begin(); it != a.end(); it++)
#define PI 3.1415926535897932384626
typedef pair<int, int> pii;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pl> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
int mpow(int base, int exp);
void dfs(int u, int par);
const int mod = 1'000'000'007;
const int N = 1e5 + 10, M = N;
vi g[N];
int a[N], ans[N], par[N], sz[N];
int n = 0;
stack<int> stck;
void reset()
{
fo(i, n)
{
par[i] = i;
sz[i] = 1;
}
}
int find(int a)
{
while (a != par[a])
{
a = par[a];
}
return a;
}
void onion(int a, int b)
{
a = find(a);
b = find(b);
if (a == b)
return;
if (sz[a] > sz[b])
swap(a, b);
stck.push(a);
sz[b] += sz[a];
par[a] = par[b];
}
void rollback(int siz)
{
while (stck.size() > siz)
{
int k = stck.top();
stck.pop();
sz[par[k]] -= sz[k];
par[k] = k;
}
}
int u[N], v[N], d[N], b[N], r[N], s[N], w[N], ty[N], changed[N];
vi tojoin[N];
const int bs = 1000;
void solve()
{
int m, q;
cin >> n >> m;
fo(i, m)
{
cin >> u[i] >> v[i] >> d[i];
u[i]--;
v[i]--;
}
cin >> q;
fo(i, q)
{
int t;
cin >> t;
if (t == 1)
{
cin >> b[i] >> r[i];
b[i]--;
ty[i] = 1;
}
else
{
cin >> s[i] >> w[i];
s[i]--;
ty[i] = 2;
}
}
for (int j = 0; j < q; j += bs)
{
reset();
vi ask, update, nochange;
fo(i, m) changed[i] = false;
for (int i = j; i < min(j + bs, q); i++)
{
if (ty[i] == 1)
{
changed[b[i]] = true;
update.pb(i);
}
else
{
ask.pb(i);
}
}
fo(k, m) if (!changed[k]) nochange.pb(k);
for (int i = j; i < min(j + bs, q); i++)
{
if (ty[i] == 1)
{
d[b[i]] = r[i];
}
else
{
tojoin[i].clear();
for (auto e : update)
if (d[b[e]] >= w[i])
tojoin[i].pb(b[e]);
}
}
sort(all(ask), [&](int a, int b)
{ return w[a] > w[b]; });
sort(all(nochange), [&](int a, int b)
{ return d[a] > d[b]; });
int ptr = 0;
for (auto e : ask)
{
while (ptr < nochange.size() && d[nochange[ptr]] >= w[e])
{
onion(u[nochange[ptr]], v[nochange[ptr]]);
ptr++;
}
int prv = stck.size();
for (auto f : tojoin[e])
onion(u[f], v[f]);
ans[e] = sz[find(s[e])];
rollback(prv);
}
}
fo(i, q) if (ty[i] == 2) cout << ans[i] << '\n';
return;
}
int main()
{
ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
srand(chrono::high_resolution_clock::now().time_since_epoch().count());
int t = 1;
int cs = 0;
while (t - cs)
{
solve();
cs++;
}
return 0;
}
int mpow(int base, int exp)
{
base %= mod;
int result = 1;
while (exp > 0)
{
if (exp & 1)
result = ((ll)result * base) % mod;
base = ((ll)base * base) % mod;
exp >>= 1;
}
return result;
}
void ipgraph(int n, int m)
{
int u, v;
while (m--)
{
cin >> u >> v;
u--, v--;
g[u].pb(v);
g[v].pb(u);
}
}
void dfs(int u, int par)
{
for (int v : g[u])
{
if (v == par)
continue;
dfs(v, u);
}
}
Compilation message
bridges.cpp: In function 'void rollback(int)':
bridges.cpp:82:24: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
82 | while (stck.size() > siz)
| ~~~~~~~~~~~~^~~~~
bridges.cpp: In function 'void solve()':
bridges.cpp:162:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
162 | while (ptr < nochange.size() && d[nochange[ptr]] >= w[e])
| ~~~~^~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
5068 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
43 ms |
11888 KB |
Output is correct |
4 |
Correct |
6 ms |
5196 KB |
Output is correct |
5 |
Correct |
41 ms |
12696 KB |
Output is correct |
6 |
Correct |
32 ms |
12860 KB |
Output is correct |
7 |
Correct |
36 ms |
12948 KB |
Output is correct |
8 |
Correct |
39 ms |
11332 KB |
Output is correct |
9 |
Correct |
51 ms |
17176 KB |
Output is correct |
10 |
Correct |
45 ms |
12096 KB |
Output is correct |
11 |
Correct |
41 ms |
11940 KB |
Output is correct |
12 |
Correct |
53 ms |
14348 KB |
Output is correct |
13 |
Correct |
47 ms |
12484 KB |
Output is correct |
14 |
Correct |
44 ms |
11696 KB |
Output is correct |
15 |
Correct |
50 ms |
12536 KB |
Output is correct |
16 |
Correct |
44 ms |
15456 KB |
Output is correct |
17 |
Correct |
47 ms |
14536 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1265 ms |
96208 KB |
Output is correct |
2 |
Correct |
1252 ms |
96148 KB |
Output is correct |
3 |
Correct |
1265 ms |
96300 KB |
Output is correct |
4 |
Correct |
1310 ms |
95784 KB |
Output is correct |
5 |
Correct |
1307 ms |
96448 KB |
Output is correct |
6 |
Correct |
1912 ms |
154088 KB |
Output is correct |
7 |
Correct |
1885 ms |
150772 KB |
Output is correct |
8 |
Correct |
1895 ms |
150416 KB |
Output is correct |
9 |
Correct |
33 ms |
6724 KB |
Output is correct |
10 |
Correct |
1094 ms |
121932 KB |
Output is correct |
11 |
Correct |
1006 ms |
121016 KB |
Output is correct |
12 |
Correct |
1092 ms |
76136 KB |
Output is correct |
13 |
Correct |
1078 ms |
69052 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1062 ms |
89012 KB |
Output is correct |
2 |
Correct |
851 ms |
104004 KB |
Output is correct |
3 |
Correct |
1300 ms |
116940 KB |
Output is correct |
4 |
Correct |
1048 ms |
88520 KB |
Output is correct |
5 |
Correct |
33 ms |
6788 KB |
Output is correct |
6 |
Correct |
1217 ms |
108244 KB |
Output is correct |
7 |
Correct |
956 ms |
80448 KB |
Output is correct |
8 |
Correct |
826 ms |
64712 KB |
Output is correct |
9 |
Correct |
694 ms |
56644 KB |
Output is correct |
10 |
Correct |
617 ms |
44996 KB |
Output is correct |
11 |
Correct |
700 ms |
53820 KB |
Output is correct |
12 |
Correct |
629 ms |
43528 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1380 ms |
29916 KB |
Output is correct |
2 |
Correct |
35 ms |
8132 KB |
Output is correct |
3 |
Correct |
147 ms |
9500 KB |
Output is correct |
4 |
Correct |
76 ms |
9620 KB |
Output is correct |
5 |
Correct |
710 ms |
32272 KB |
Output is correct |
6 |
Correct |
1350 ms |
33908 KB |
Output is correct |
7 |
Correct |
685 ms |
32172 KB |
Output is correct |
8 |
Correct |
664 ms |
31460 KB |
Output is correct |
9 |
Correct |
656 ms |
31460 KB |
Output is correct |
10 |
Correct |
653 ms |
31428 KB |
Output is correct |
11 |
Correct |
1014 ms |
32912 KB |
Output is correct |
12 |
Correct |
1010 ms |
32940 KB |
Output is correct |
13 |
Correct |
1055 ms |
32876 KB |
Output is correct |
14 |
Correct |
639 ms |
32152 KB |
Output is correct |
15 |
Correct |
660 ms |
32096 KB |
Output is correct |
16 |
Correct |
1380 ms |
33856 KB |
Output is correct |
17 |
Correct |
1379 ms |
33788 KB |
Output is correct |
18 |
Correct |
1378 ms |
34196 KB |
Output is correct |
19 |
Correct |
1399 ms |
34100 KB |
Output is correct |
20 |
Correct |
1150 ms |
33180 KB |
Output is correct |
21 |
Correct |
1167 ms |
33220 KB |
Output is correct |
22 |
Correct |
1310 ms |
33536 KB |
Output is correct |
23 |
Correct |
763 ms |
29796 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1265 ms |
96208 KB |
Output is correct |
2 |
Correct |
1252 ms |
96148 KB |
Output is correct |
3 |
Correct |
1265 ms |
96300 KB |
Output is correct |
4 |
Correct |
1310 ms |
95784 KB |
Output is correct |
5 |
Correct |
1307 ms |
96448 KB |
Output is correct |
6 |
Correct |
1912 ms |
154088 KB |
Output is correct |
7 |
Correct |
1885 ms |
150772 KB |
Output is correct |
8 |
Correct |
1895 ms |
150416 KB |
Output is correct |
9 |
Correct |
33 ms |
6724 KB |
Output is correct |
10 |
Correct |
1094 ms |
121932 KB |
Output is correct |
11 |
Correct |
1006 ms |
121016 KB |
Output is correct |
12 |
Correct |
1092 ms |
76136 KB |
Output is correct |
13 |
Correct |
1078 ms |
69052 KB |
Output is correct |
14 |
Correct |
1062 ms |
89012 KB |
Output is correct |
15 |
Correct |
851 ms |
104004 KB |
Output is correct |
16 |
Correct |
1300 ms |
116940 KB |
Output is correct |
17 |
Correct |
1048 ms |
88520 KB |
Output is correct |
18 |
Correct |
33 ms |
6788 KB |
Output is correct |
19 |
Correct |
1217 ms |
108244 KB |
Output is correct |
20 |
Correct |
956 ms |
80448 KB |
Output is correct |
21 |
Correct |
826 ms |
64712 KB |
Output is correct |
22 |
Correct |
694 ms |
56644 KB |
Output is correct |
23 |
Correct |
617 ms |
44996 KB |
Output is correct |
24 |
Correct |
700 ms |
53820 KB |
Output is correct |
25 |
Correct |
629 ms |
43528 KB |
Output is correct |
26 |
Correct |
1369 ms |
96164 KB |
Output is correct |
27 |
Correct |
1635 ms |
125508 KB |
Output is correct |
28 |
Correct |
1326 ms |
94276 KB |
Output is correct |
29 |
Correct |
926 ms |
51516 KB |
Output is correct |
30 |
Correct |
1533 ms |
111824 KB |
Output is correct |
31 |
Correct |
1562 ms |
114152 KB |
Output is correct |
32 |
Correct |
1568 ms |
114656 KB |
Output is correct |
33 |
Correct |
1312 ms |
94692 KB |
Output is correct |
34 |
Correct |
1343 ms |
94820 KB |
Output is correct |
35 |
Correct |
1332 ms |
95140 KB |
Output is correct |
36 |
Correct |
981 ms |
58288 KB |
Output is correct |
37 |
Correct |
971 ms |
57160 KB |
Output is correct |
38 |
Correct |
980 ms |
55472 KB |
Output is correct |
39 |
Correct |
808 ms |
41684 KB |
Output is correct |
40 |
Correct |
785 ms |
40956 KB |
Output is correct |
41 |
Correct |
775 ms |
40368 KB |
Output is correct |
42 |
Correct |
761 ms |
39124 KB |
Output is correct |
43 |
Correct |
756 ms |
38532 KB |
Output is correct |
44 |
Correct |
760 ms |
38016 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
5068 KB |
Output is correct |
2 |
Correct |
3 ms |
4940 KB |
Output is correct |
3 |
Correct |
43 ms |
11888 KB |
Output is correct |
4 |
Correct |
6 ms |
5196 KB |
Output is correct |
5 |
Correct |
41 ms |
12696 KB |
Output is correct |
6 |
Correct |
32 ms |
12860 KB |
Output is correct |
7 |
Correct |
36 ms |
12948 KB |
Output is correct |
8 |
Correct |
39 ms |
11332 KB |
Output is correct |
9 |
Correct |
51 ms |
17176 KB |
Output is correct |
10 |
Correct |
45 ms |
12096 KB |
Output is correct |
11 |
Correct |
41 ms |
11940 KB |
Output is correct |
12 |
Correct |
53 ms |
14348 KB |
Output is correct |
13 |
Correct |
47 ms |
12484 KB |
Output is correct |
14 |
Correct |
44 ms |
11696 KB |
Output is correct |
15 |
Correct |
50 ms |
12536 KB |
Output is correct |
16 |
Correct |
44 ms |
15456 KB |
Output is correct |
17 |
Correct |
47 ms |
14536 KB |
Output is correct |
18 |
Correct |
1265 ms |
96208 KB |
Output is correct |
19 |
Correct |
1252 ms |
96148 KB |
Output is correct |
20 |
Correct |
1265 ms |
96300 KB |
Output is correct |
21 |
Correct |
1310 ms |
95784 KB |
Output is correct |
22 |
Correct |
1307 ms |
96448 KB |
Output is correct |
23 |
Correct |
1912 ms |
154088 KB |
Output is correct |
24 |
Correct |
1885 ms |
150772 KB |
Output is correct |
25 |
Correct |
1895 ms |
150416 KB |
Output is correct |
26 |
Correct |
33 ms |
6724 KB |
Output is correct |
27 |
Correct |
1094 ms |
121932 KB |
Output is correct |
28 |
Correct |
1006 ms |
121016 KB |
Output is correct |
29 |
Correct |
1092 ms |
76136 KB |
Output is correct |
30 |
Correct |
1078 ms |
69052 KB |
Output is correct |
31 |
Correct |
1062 ms |
89012 KB |
Output is correct |
32 |
Correct |
851 ms |
104004 KB |
Output is correct |
33 |
Correct |
1300 ms |
116940 KB |
Output is correct |
34 |
Correct |
1048 ms |
88520 KB |
Output is correct |
35 |
Correct |
33 ms |
6788 KB |
Output is correct |
36 |
Correct |
1217 ms |
108244 KB |
Output is correct |
37 |
Correct |
956 ms |
80448 KB |
Output is correct |
38 |
Correct |
826 ms |
64712 KB |
Output is correct |
39 |
Correct |
694 ms |
56644 KB |
Output is correct |
40 |
Correct |
617 ms |
44996 KB |
Output is correct |
41 |
Correct |
700 ms |
53820 KB |
Output is correct |
42 |
Correct |
629 ms |
43528 KB |
Output is correct |
43 |
Correct |
1380 ms |
29916 KB |
Output is correct |
44 |
Correct |
35 ms |
8132 KB |
Output is correct |
45 |
Correct |
147 ms |
9500 KB |
Output is correct |
46 |
Correct |
76 ms |
9620 KB |
Output is correct |
47 |
Correct |
710 ms |
32272 KB |
Output is correct |
48 |
Correct |
1350 ms |
33908 KB |
Output is correct |
49 |
Correct |
685 ms |
32172 KB |
Output is correct |
50 |
Correct |
664 ms |
31460 KB |
Output is correct |
51 |
Correct |
656 ms |
31460 KB |
Output is correct |
52 |
Correct |
653 ms |
31428 KB |
Output is correct |
53 |
Correct |
1014 ms |
32912 KB |
Output is correct |
54 |
Correct |
1010 ms |
32940 KB |
Output is correct |
55 |
Correct |
1055 ms |
32876 KB |
Output is correct |
56 |
Correct |
639 ms |
32152 KB |
Output is correct |
57 |
Correct |
660 ms |
32096 KB |
Output is correct |
58 |
Correct |
1380 ms |
33856 KB |
Output is correct |
59 |
Correct |
1379 ms |
33788 KB |
Output is correct |
60 |
Correct |
1378 ms |
34196 KB |
Output is correct |
61 |
Correct |
1399 ms |
34100 KB |
Output is correct |
62 |
Correct |
1150 ms |
33180 KB |
Output is correct |
63 |
Correct |
1167 ms |
33220 KB |
Output is correct |
64 |
Correct |
1310 ms |
33536 KB |
Output is correct |
65 |
Correct |
763 ms |
29796 KB |
Output is correct |
66 |
Correct |
1369 ms |
96164 KB |
Output is correct |
67 |
Correct |
1635 ms |
125508 KB |
Output is correct |
68 |
Correct |
1326 ms |
94276 KB |
Output is correct |
69 |
Correct |
926 ms |
51516 KB |
Output is correct |
70 |
Correct |
1533 ms |
111824 KB |
Output is correct |
71 |
Correct |
1562 ms |
114152 KB |
Output is correct |
72 |
Correct |
1568 ms |
114656 KB |
Output is correct |
73 |
Correct |
1312 ms |
94692 KB |
Output is correct |
74 |
Correct |
1343 ms |
94820 KB |
Output is correct |
75 |
Correct |
1332 ms |
95140 KB |
Output is correct |
76 |
Correct |
981 ms |
58288 KB |
Output is correct |
77 |
Correct |
971 ms |
57160 KB |
Output is correct |
78 |
Correct |
980 ms |
55472 KB |
Output is correct |
79 |
Correct |
808 ms |
41684 KB |
Output is correct |
80 |
Correct |
785 ms |
40956 KB |
Output is correct |
81 |
Correct |
775 ms |
40368 KB |
Output is correct |
82 |
Correct |
761 ms |
39124 KB |
Output is correct |
83 |
Correct |
756 ms |
38532 KB |
Output is correct |
84 |
Correct |
760 ms |
38016 KB |
Output is correct |
85 |
Correct |
1866 ms |
100912 KB |
Output is correct |
86 |
Correct |
186 ms |
15988 KB |
Output is correct |
87 |
Correct |
115 ms |
20268 KB |
Output is correct |
88 |
Correct |
1118 ms |
113032 KB |
Output is correct |
89 |
Correct |
1831 ms |
99756 KB |
Output is correct |
90 |
Correct |
1135 ms |
121556 KB |
Output is correct |
91 |
Correct |
1375 ms |
98724 KB |
Output is correct |
92 |
Correct |
1360 ms |
98628 KB |
Output is correct |
93 |
Correct |
1944 ms |
136552 KB |
Output is correct |
94 |
Correct |
1560 ms |
100088 KB |
Output is correct |
95 |
Correct |
1592 ms |
100156 KB |
Output is correct |
96 |
Correct |
1880 ms |
140932 KB |
Output is correct |
97 |
Correct |
897 ms |
65660 KB |
Output is correct |
98 |
Correct |
885 ms |
62328 KB |
Output is correct |
99 |
Correct |
1869 ms |
102200 KB |
Output is correct |
100 |
Correct |
1855 ms |
100840 KB |
Output is correct |
101 |
Correct |
1912 ms |
101160 KB |
Output is correct |
102 |
Correct |
1902 ms |
101040 KB |
Output is correct |
103 |
Correct |
2089 ms |
146208 KB |
Output is correct |
104 |
Correct |
2033 ms |
145764 KB |
Output is correct |
105 |
Correct |
1472 ms |
73604 KB |
Output is correct |
106 |
Correct |
1182 ms |
53540 KB |
Output is correct |
107 |
Correct |
1415 ms |
80124 KB |
Output is correct |
108 |
Correct |
1896 ms |
135876 KB |
Output is correct |
109 |
Correct |
1371 ms |
137744 KB |
Output is correct |