# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
123655 |
2019-07-01T22:20:24 Z |
duality |
Bridges (APIO19_bridges) |
C++11 |
|
2306 ms |
11816 KB |
#define DEBUG 0
#include <bits/stdc++.h>
using namespace std;
#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}
// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
public:
template<typename T>
_Debug& operator,(T val) {
cout << val << endl;
return *this;
}
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif
// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back
// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;
// ---------- END OF TEMPLATE ----------
int u[100000],v[100000],d[100000];
int t[100000],x[100000],w[100000];
int order[100000],temp1[100000],temp2[100000];
bool comp(int a,int b) {
return d[a] > d[b];
}
int change[100000],seen[100000];
int ans[100000];
int parent[50000],size[50000];
int find(int n) {
if (parent[n] != n) parent[n] = find(parent[n]);
return parent[n];
}
int merge(int a,int b) {
int pa = find(a),pb = find(b);
if (pa != pb) {
if (size[pa] < size[pb]) swap(pa,pb);
parent[pb] = pa,size[pa] += size[pb];
}
return 0;
}
vi adjList[50000];
int visited[50000];
int doDFS(int u) {
if (visited[u]) return 0;
int i;
int ans = size[u];
visited[u] = 1;
for (i = 0; i < adjList[u].size(); i++) ans += doDFS(adjList[u][i]);
return ans;
}
int main() {
int i;
int n,m,q;
scanf("%d %d",&n,&m);
for (i = 0; i < m; i++) scanf("%d %d %d",&u[i],&v[i],&d[i]),u[i]--,v[i]--;
scanf("%d",&q);
for (i = 0; i < q; i++) scanf("%d %d %d",&t[i],&x[i],&w[i]),x[i]--;
int j,k,l;
int bs = 1.5*sqrt(q)+EPS;
for (i = 0; i < m; i++) order[i] = i;
sort(order,order+m,comp);
for (i = 0; i < q; i += bs) {
int e = min(i+bs,q);
vector<pair<pii,int> > queries;
for (j = i; j < e; j++) {
if (t[j] == 1) change[x[j]] = 1;
else queries.pb(mp(mp(w[j],x[j]),j));
}
sort(queries.begin(),queries.end());
for (j = 0; j < n; j++) parent[j] = j,size[j] = 1;
k = 0;
for (j = queries.size()-1; j >= 0; j--) {
while ((k < m) && (d[order[k]] >= queries[j].first.first)) {
if (!change[order[k]]) merge(u[order[k]],v[order[k]]);
k++;
}
vi toClear;
for (l = queries[j].second; l >= i; l--) {
if ((t[l] == 1) && !seen[x[l]]) {
seen[x[l]] = 1;
if (w[l] >= queries[j].first.first) {
int pu = find(u[x[l]]),pv = find(v[x[l]]);
adjList[pu].pb(pv),adjList[pv].pb(pu);
toClear.pb(pu),toClear.pb(pv);
}
}
}
for (l = queries[j].second+1; l < e; l++) {
if ((t[l] == 1) && !seen[x[l]] && (d[x[l]] >= queries[j].first.first)) {
int pu = find(u[x[l]]),pv = find(v[x[l]]);
adjList[pu].pb(pv),adjList[pv].pb(pu);
toClear.pb(pu),toClear.pb(pv);
}
}
ans[queries[j].second] = doDFS(find(queries[j].first.second));
toClear.pb(find(queries[j].first.second));
for (l = 0; l < toClear.size(); l++) adjList[toClear[l]].clear(),visited[toClear[l]] = 0;
for (l = queries[j].second; l >= i; l--) {
if (t[l] == 1) seen[x[l]] = 0;
}
}
for (j = i; j < e; j++) {
if (t[j] == 1) d[x[j]] = w[j];
}
int a = 0,b = 0;
for (j = 0; j < m; j++) {
if (!change[order[j]]) temp1[a++] = order[j];
}
for (j = i; j < e; j++) {
if ((t[j] == 1) && change[x[j]]) change[x[j]] = 0,temp2[b++] = x[j];
}
sort(temp2,temp2+b,comp);
merge(temp1,temp1+a,temp2,temp2+b,order,comp);
}
for (i = 0; i < q; i++) {
if (t[i] == 2) printf("%d\n",ans[i]);
}
return 0;
}
Compilation message
bridges.cpp: In function 'int doDFS(int)':
bridges.cpp:86:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < adjList[u].size(); i++) ans += doDFS(adjList[u][i]);
~~^~~~~~~~~~~~~~~~~~~
bridges.cpp: In function 'int main()':
bridges.cpp:136:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (l = 0; l < toClear.size(); l++) adjList[toClear[l]].clear(),visited[toClear[l]] = 0;
~~^~~~~~~~~~~~~~~~
bridges.cpp:92:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d",&n,&m);
~~~~~^~~~~~~~~~~~~~~
bridges.cpp:93:71: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for (i = 0; i < m; i++) scanf("%d %d %d",&u[i],&v[i],&d[i]),u[i]--,v[i]--;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
bridges.cpp:94:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&q);
~~~~~^~~~~~~~~
bridges.cpp:95:64: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for (i = 0; i < q; i++) scanf("%d %d %d",&t[i],&x[i],&w[i]),x[i]--;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
1532 KB |
Output is correct |
2 |
Correct |
3 ms |
1528 KB |
Output is correct |
3 |
Correct |
25 ms |
1912 KB |
Output is correct |
4 |
Correct |
11 ms |
1784 KB |
Output is correct |
5 |
Correct |
23 ms |
1912 KB |
Output is correct |
6 |
Correct |
21 ms |
1784 KB |
Output is correct |
7 |
Correct |
23 ms |
1784 KB |
Output is correct |
8 |
Correct |
22 ms |
1912 KB |
Output is correct |
9 |
Correct |
29 ms |
1800 KB |
Output is correct |
10 |
Correct |
21 ms |
1784 KB |
Output is correct |
11 |
Correct |
21 ms |
1856 KB |
Output is correct |
12 |
Correct |
26 ms |
1784 KB |
Output is correct |
13 |
Correct |
24 ms |
1784 KB |
Output is correct |
14 |
Correct |
23 ms |
1912 KB |
Output is correct |
15 |
Correct |
23 ms |
1780 KB |
Output is correct |
16 |
Correct |
24 ms |
1788 KB |
Output is correct |
17 |
Correct |
23 ms |
1788 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1478 ms |
6892 KB |
Output is correct |
2 |
Correct |
1428 ms |
6904 KB |
Output is correct |
3 |
Correct |
1442 ms |
6936 KB |
Output is correct |
4 |
Correct |
1427 ms |
6852 KB |
Output is correct |
5 |
Correct |
1410 ms |
7048 KB |
Output is correct |
6 |
Correct |
1837 ms |
5992 KB |
Output is correct |
7 |
Correct |
1718 ms |
5884 KB |
Output is correct |
8 |
Correct |
1706 ms |
6152 KB |
Output is correct |
9 |
Correct |
113 ms |
3472 KB |
Output is correct |
10 |
Correct |
1381 ms |
6904 KB |
Output is correct |
11 |
Correct |
1419 ms |
6908 KB |
Output is correct |
12 |
Correct |
1050 ms |
6116 KB |
Output is correct |
13 |
Correct |
1119 ms |
5852 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1223 ms |
5520 KB |
Output is correct |
2 |
Correct |
833 ms |
4128 KB |
Output is correct |
3 |
Correct |
1271 ms |
5880 KB |
Output is correct |
4 |
Correct |
1157 ms |
5748 KB |
Output is correct |
5 |
Correct |
111 ms |
3420 KB |
Output is correct |
6 |
Correct |
1185 ms |
5564 KB |
Output is correct |
7 |
Correct |
1051 ms |
5532 KB |
Output is correct |
8 |
Correct |
910 ms |
5540 KB |
Output is correct |
9 |
Correct |
736 ms |
5112 KB |
Output is correct |
10 |
Correct |
712 ms |
5116 KB |
Output is correct |
11 |
Correct |
817 ms |
5660 KB |
Output is correct |
12 |
Correct |
675 ms |
5752 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1355 ms |
6180 KB |
Output is correct |
2 |
Correct |
111 ms |
3576 KB |
Output is correct |
3 |
Correct |
271 ms |
4060 KB |
Output is correct |
4 |
Correct |
111 ms |
3960 KB |
Output is correct |
5 |
Correct |
993 ms |
6512 KB |
Output is correct |
6 |
Correct |
1366 ms |
6380 KB |
Output is correct |
7 |
Correct |
974 ms |
6528 KB |
Output is correct |
8 |
Correct |
848 ms |
5188 KB |
Output is correct |
9 |
Correct |
860 ms |
5240 KB |
Output is correct |
10 |
Correct |
833 ms |
5540 KB |
Output is correct |
11 |
Correct |
1273 ms |
5880 KB |
Output is correct |
12 |
Correct |
1294 ms |
5708 KB |
Output is correct |
13 |
Correct |
1552 ms |
5860 KB |
Output is correct |
14 |
Correct |
906 ms |
6520 KB |
Output is correct |
15 |
Correct |
921 ms |
6616 KB |
Output is correct |
16 |
Correct |
1553 ms |
6456 KB |
Output is correct |
17 |
Correct |
1548 ms |
6500 KB |
Output is correct |
18 |
Correct |
1545 ms |
6572 KB |
Output is correct |
19 |
Correct |
1597 ms |
6364 KB |
Output is correct |
20 |
Correct |
1427 ms |
6232 KB |
Output is correct |
21 |
Correct |
1441 ms |
6264 KB |
Output is correct |
22 |
Correct |
1521 ms |
6512 KB |
Output is correct |
23 |
Correct |
1239 ms |
6008 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1478 ms |
6892 KB |
Output is correct |
2 |
Correct |
1428 ms |
6904 KB |
Output is correct |
3 |
Correct |
1442 ms |
6936 KB |
Output is correct |
4 |
Correct |
1427 ms |
6852 KB |
Output is correct |
5 |
Correct |
1410 ms |
7048 KB |
Output is correct |
6 |
Correct |
1837 ms |
5992 KB |
Output is correct |
7 |
Correct |
1718 ms |
5884 KB |
Output is correct |
8 |
Correct |
1706 ms |
6152 KB |
Output is correct |
9 |
Correct |
113 ms |
3472 KB |
Output is correct |
10 |
Correct |
1381 ms |
6904 KB |
Output is correct |
11 |
Correct |
1419 ms |
6908 KB |
Output is correct |
12 |
Correct |
1050 ms |
6116 KB |
Output is correct |
13 |
Correct |
1119 ms |
5852 KB |
Output is correct |
14 |
Correct |
1223 ms |
5520 KB |
Output is correct |
15 |
Correct |
833 ms |
4128 KB |
Output is correct |
16 |
Correct |
1271 ms |
5880 KB |
Output is correct |
17 |
Correct |
1157 ms |
5748 KB |
Output is correct |
18 |
Correct |
111 ms |
3420 KB |
Output is correct |
19 |
Correct |
1185 ms |
5564 KB |
Output is correct |
20 |
Correct |
1051 ms |
5532 KB |
Output is correct |
21 |
Correct |
910 ms |
5540 KB |
Output is correct |
22 |
Correct |
736 ms |
5112 KB |
Output is correct |
23 |
Correct |
712 ms |
5116 KB |
Output is correct |
24 |
Correct |
817 ms |
5660 KB |
Output is correct |
25 |
Correct |
675 ms |
5752 KB |
Output is correct |
26 |
Correct |
1543 ms |
6788 KB |
Output is correct |
27 |
Correct |
1769 ms |
6960 KB |
Output is correct |
28 |
Correct |
1599 ms |
6904 KB |
Output is correct |
29 |
Correct |
1215 ms |
6812 KB |
Output is correct |
30 |
Correct |
1816 ms |
6960 KB |
Output is correct |
31 |
Correct |
1831 ms |
6848 KB |
Output is correct |
32 |
Correct |
1831 ms |
6964 KB |
Output is correct |
33 |
Correct |
1663 ms |
6820 KB |
Output is correct |
34 |
Correct |
1667 ms |
6844 KB |
Output is correct |
35 |
Correct |
1665 ms |
6860 KB |
Output is correct |
36 |
Correct |
1273 ms |
6924 KB |
Output is correct |
37 |
Correct |
1256 ms |
6872 KB |
Output is correct |
38 |
Correct |
1258 ms |
6844 KB |
Output is correct |
39 |
Correct |
1034 ms |
6320 KB |
Output is correct |
40 |
Correct |
1038 ms |
6192 KB |
Output is correct |
41 |
Correct |
1036 ms |
6012 KB |
Output is correct |
42 |
Correct |
961 ms |
6856 KB |
Output is correct |
43 |
Correct |
944 ms |
6924 KB |
Output is correct |
44 |
Correct |
931 ms |
7024 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
1532 KB |
Output is correct |
2 |
Correct |
3 ms |
1528 KB |
Output is correct |
3 |
Correct |
25 ms |
1912 KB |
Output is correct |
4 |
Correct |
11 ms |
1784 KB |
Output is correct |
5 |
Correct |
23 ms |
1912 KB |
Output is correct |
6 |
Correct |
21 ms |
1784 KB |
Output is correct |
7 |
Correct |
23 ms |
1784 KB |
Output is correct |
8 |
Correct |
22 ms |
1912 KB |
Output is correct |
9 |
Correct |
29 ms |
1800 KB |
Output is correct |
10 |
Correct |
21 ms |
1784 KB |
Output is correct |
11 |
Correct |
21 ms |
1856 KB |
Output is correct |
12 |
Correct |
26 ms |
1784 KB |
Output is correct |
13 |
Correct |
24 ms |
1784 KB |
Output is correct |
14 |
Correct |
23 ms |
1912 KB |
Output is correct |
15 |
Correct |
23 ms |
1780 KB |
Output is correct |
16 |
Correct |
24 ms |
1788 KB |
Output is correct |
17 |
Correct |
23 ms |
1788 KB |
Output is correct |
18 |
Correct |
1478 ms |
6892 KB |
Output is correct |
19 |
Correct |
1428 ms |
6904 KB |
Output is correct |
20 |
Correct |
1442 ms |
6936 KB |
Output is correct |
21 |
Correct |
1427 ms |
6852 KB |
Output is correct |
22 |
Correct |
1410 ms |
7048 KB |
Output is correct |
23 |
Correct |
1837 ms |
5992 KB |
Output is correct |
24 |
Correct |
1718 ms |
5884 KB |
Output is correct |
25 |
Correct |
1706 ms |
6152 KB |
Output is correct |
26 |
Correct |
113 ms |
3472 KB |
Output is correct |
27 |
Correct |
1381 ms |
6904 KB |
Output is correct |
28 |
Correct |
1419 ms |
6908 KB |
Output is correct |
29 |
Correct |
1050 ms |
6116 KB |
Output is correct |
30 |
Correct |
1119 ms |
5852 KB |
Output is correct |
31 |
Correct |
1223 ms |
5520 KB |
Output is correct |
32 |
Correct |
833 ms |
4128 KB |
Output is correct |
33 |
Correct |
1271 ms |
5880 KB |
Output is correct |
34 |
Correct |
1157 ms |
5748 KB |
Output is correct |
35 |
Correct |
111 ms |
3420 KB |
Output is correct |
36 |
Correct |
1185 ms |
5564 KB |
Output is correct |
37 |
Correct |
1051 ms |
5532 KB |
Output is correct |
38 |
Correct |
910 ms |
5540 KB |
Output is correct |
39 |
Correct |
736 ms |
5112 KB |
Output is correct |
40 |
Correct |
712 ms |
5116 KB |
Output is correct |
41 |
Correct |
817 ms |
5660 KB |
Output is correct |
42 |
Correct |
675 ms |
5752 KB |
Output is correct |
43 |
Correct |
1355 ms |
6180 KB |
Output is correct |
44 |
Correct |
111 ms |
3576 KB |
Output is correct |
45 |
Correct |
271 ms |
4060 KB |
Output is correct |
46 |
Correct |
111 ms |
3960 KB |
Output is correct |
47 |
Correct |
993 ms |
6512 KB |
Output is correct |
48 |
Correct |
1366 ms |
6380 KB |
Output is correct |
49 |
Correct |
974 ms |
6528 KB |
Output is correct |
50 |
Correct |
848 ms |
5188 KB |
Output is correct |
51 |
Correct |
860 ms |
5240 KB |
Output is correct |
52 |
Correct |
833 ms |
5540 KB |
Output is correct |
53 |
Correct |
1273 ms |
5880 KB |
Output is correct |
54 |
Correct |
1294 ms |
5708 KB |
Output is correct |
55 |
Correct |
1552 ms |
5860 KB |
Output is correct |
56 |
Correct |
906 ms |
6520 KB |
Output is correct |
57 |
Correct |
921 ms |
6616 KB |
Output is correct |
58 |
Correct |
1553 ms |
6456 KB |
Output is correct |
59 |
Correct |
1548 ms |
6500 KB |
Output is correct |
60 |
Correct |
1545 ms |
6572 KB |
Output is correct |
61 |
Correct |
1597 ms |
6364 KB |
Output is correct |
62 |
Correct |
1427 ms |
6232 KB |
Output is correct |
63 |
Correct |
1441 ms |
6264 KB |
Output is correct |
64 |
Correct |
1521 ms |
6512 KB |
Output is correct |
65 |
Correct |
1239 ms |
6008 KB |
Output is correct |
66 |
Correct |
1543 ms |
6788 KB |
Output is correct |
67 |
Correct |
1769 ms |
6960 KB |
Output is correct |
68 |
Correct |
1599 ms |
6904 KB |
Output is correct |
69 |
Correct |
1215 ms |
6812 KB |
Output is correct |
70 |
Correct |
1816 ms |
6960 KB |
Output is correct |
71 |
Correct |
1831 ms |
6848 KB |
Output is correct |
72 |
Correct |
1831 ms |
6964 KB |
Output is correct |
73 |
Correct |
1663 ms |
6820 KB |
Output is correct |
74 |
Correct |
1667 ms |
6844 KB |
Output is correct |
75 |
Correct |
1665 ms |
6860 KB |
Output is correct |
76 |
Correct |
1273 ms |
6924 KB |
Output is correct |
77 |
Correct |
1256 ms |
6872 KB |
Output is correct |
78 |
Correct |
1258 ms |
6844 KB |
Output is correct |
79 |
Correct |
1034 ms |
6320 KB |
Output is correct |
80 |
Correct |
1038 ms |
6192 KB |
Output is correct |
81 |
Correct |
1036 ms |
6012 KB |
Output is correct |
82 |
Correct |
961 ms |
6856 KB |
Output is correct |
83 |
Correct |
944 ms |
6924 KB |
Output is correct |
84 |
Correct |
931 ms |
7024 KB |
Output is correct |
85 |
Correct |
2088 ms |
8120 KB |
Output is correct |
86 |
Correct |
315 ms |
4728 KB |
Output is correct |
87 |
Correct |
145 ms |
4728 KB |
Output is correct |
88 |
Correct |
1673 ms |
7908 KB |
Output is correct |
89 |
Correct |
2137 ms |
8088 KB |
Output is correct |
90 |
Correct |
1633 ms |
7280 KB |
Output is correct |
91 |
Correct |
1681 ms |
6784 KB |
Output is correct |
92 |
Correct |
1676 ms |
6912 KB |
Output is correct |
93 |
Correct |
1895 ms |
6308 KB |
Output is correct |
94 |
Correct |
2050 ms |
7588 KB |
Output is correct |
95 |
Correct |
2023 ms |
7624 KB |
Output is correct |
96 |
Correct |
2049 ms |
6488 KB |
Output is correct |
97 |
Correct |
1240 ms |
7140 KB |
Output is correct |
98 |
Correct |
1300 ms |
7416 KB |
Output is correct |
99 |
Correct |
2209 ms |
8044 KB |
Output is correct |
100 |
Correct |
2267 ms |
11728 KB |
Output is correct |
101 |
Correct |
2306 ms |
11740 KB |
Output is correct |
102 |
Correct |
2295 ms |
11816 KB |
Output is correct |
103 |
Correct |
2146 ms |
9592 KB |
Output is correct |
104 |
Correct |
2181 ms |
9592 KB |
Output is correct |
105 |
Correct |
1694 ms |
9632 KB |
Output is correct |
106 |
Correct |
1450 ms |
9580 KB |
Output is correct |
107 |
Correct |
1757 ms |
9420 KB |
Output is correct |
108 |
Correct |
2232 ms |
10024 KB |
Output is correct |
109 |
Correct |
1953 ms |
8092 KB |
Output is correct |