#include <bits/stdc++.h>
using namespace std;
long long par[100005][20], edge[100005], depth[100005], in[100005], out[100005], l1[100005], r1[100005], l2[100005], r2[100005], x[100005], y[100005], ans[100005], bit[200005], bit2[200005], n, m, q, sz;
vector<pair<long long, long long> > adj[100005], upd;
void dfs(long long u, long long p)
{
par[u][0]=p;
for (long long i=1; i<20; i++)
par[u][i]=par[par[u][i-1]][i-1];
for (long long i=0; i<adj[u].size(); i++)
{
long long v=adj[u][i].first, w=adj[u][i].second;
if (v==p)
continue;
depth[v]=depth[u]+1;
edge[v]=w;
in[w]=(++sz);
dfs(v, u);
out[w]=(++sz);
}
}
void update(long long s, long long t)
{
for (long long i=s; i<=sz; i+=i&(-i))
{
bit[i]+=t;
if (t>0)
bit2[i]++;
else
bit2[i]--;
}
}
long long query(long long s)
{
long long res=0;
for (long long i=s; i>=1; i-=i&(-i))
res+=bit[i];
return res;
}
long long query2(long long s)
{
long long res=0;
for (long long i=s; i>=1; i-=i&(-i))
res+=bit2[i];
return res;
}
void recur(long long L, long long R, vector<long long> vec)
{
if (L==R)
{
for (long long ind:vec)
{
long long res=query2(r1[ind])-query2(l1[ind]-1);
if (l2[ind])
res+=query2(r2[ind])-query2(l2[ind]-1);
ans[ind]=res;
}
return;
}
long long mid=(L+R+1)/2;
for (long long i=L; i<mid; i++)
{
update(in[upd[i].second], upd[i].first);
update(out[upd[i].second], -upd[i].first);
}
vector<long long> ok, notok;
for (long long ind:vec)
{
long long res=query(r1[ind])-query(l1[ind]-1);
if (l2[ind])
res+=query(r2[ind])-query(l2[ind]-1);
if (res<=y[ind])
ok.push_back(ind);
else
notok.push_back(ind);
}
if (ok.size())
recur(mid, R, ok);
for (long long i=L; i<mid; i++)
{
update(in[upd[i].second], -upd[i].first);
update(out[upd[i].second], upd[i].first);
}
if (notok.size())
recur(L, mid-1, notok);
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> m >> q;
for (long long i=1; i<n; i++)
{
long long u, v;
cin >> u >> v;
adj[u].push_back({v, i});
adj[v].push_back({u, i});
}
dfs(1, 1);
for (long long i=0; i<m; i++)
{
long long s, t;
cin >> s >> t;
upd.push_back({t, s});
}
sort(upd.begin(), upd.end());
for (long long i=1; i<=q; i++)
{
long long a, b, curA, curB;
cin >> a >> b >> x[i] >> y[i];
if (depth[a]<depth[b])
swap(a, b);
curA=a, curB=b;
if (depth[a]>depth[b])
{
for (long long j=19; j>=0; j--)
if ((depth[a]-depth[b]-1)&(1<<j))
curA=par[curA][j];
if (par[curA][0]==curB)
{
l1[i]=in[edge[curA]];
r1[i]=in[edge[a]];
l2[i]=-1;
continue;
}
curA=par[curA][0];
}
for (long long j=19; j>=0; j--)
{
if (par[curA][j]!=par[curB][j])
{
curA=par[curA][j];
curB=par[curB][j];
}
}
l1[i]=in[edge[curA]];
r1[i]=in[edge[a]];
l2[i]=in[edge[curB]];
r2[i]=in[edge[b]];
}
vector<long long> tmp;
for (long long i=1; i<=q; i++)
tmp.push_back(i);
recur(0, m, tmp);
for (long long i=0; i<m; i++)
{
update(in[upd[i].second], upd[i].first);
update(out[upd[i].second], -upd[i].first);
}
for (long long i=1; i<=q; i++)
{
long long res=query2(r1[i])-query2(l1[i]-1);
if (l2[i])
res+=query2(r2[i])-query2(l2[i]-1);
cout << max(-1LL, x[i]-(res-ans[i])) << '\n';
}
}
Compilation message
currencies.cpp: In function 'void dfs(long long int, long long int)':
currencies.cpp:10:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
10 | for (long long i=0; i<adj[u].size(); i++)
| ~^~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2644 KB |
Output is correct |
2 |
Correct |
2 ms |
2644 KB |
Output is correct |
3 |
Correct |
1 ms |
2644 KB |
Output is correct |
4 |
Correct |
2 ms |
2644 KB |
Output is correct |
5 |
Correct |
6 ms |
3552 KB |
Output is correct |
6 |
Correct |
5 ms |
3712 KB |
Output is correct |
7 |
Correct |
5 ms |
3540 KB |
Output is correct |
8 |
Correct |
6 ms |
3668 KB |
Output is correct |
9 |
Correct |
6 ms |
3540 KB |
Output is correct |
10 |
Correct |
6 ms |
3668 KB |
Output is correct |
11 |
Correct |
6 ms |
3588 KB |
Output is correct |
12 |
Correct |
6 ms |
3668 KB |
Output is correct |
13 |
Correct |
6 ms |
3728 KB |
Output is correct |
14 |
Correct |
6 ms |
3720 KB |
Output is correct |
15 |
Correct |
6 ms |
3668 KB |
Output is correct |
16 |
Correct |
6 ms |
3588 KB |
Output is correct |
17 |
Correct |
6 ms |
3668 KB |
Output is correct |
18 |
Correct |
8 ms |
3604 KB |
Output is correct |
19 |
Correct |
6 ms |
3668 KB |
Output is correct |
20 |
Correct |
6 ms |
3668 KB |
Output is correct |
21 |
Correct |
6 ms |
3732 KB |
Output is correct |
22 |
Correct |
5 ms |
3668 KB |
Output is correct |
23 |
Correct |
5 ms |
3668 KB |
Output is correct |
24 |
Correct |
5 ms |
3696 KB |
Output is correct |
25 |
Correct |
5 ms |
3668 KB |
Output is correct |
26 |
Correct |
4 ms |
3708 KB |
Output is correct |
27 |
Correct |
4 ms |
3668 KB |
Output is correct |
28 |
Correct |
5 ms |
3592 KB |
Output is correct |
29 |
Correct |
5 ms |
3848 KB |
Output is correct |
30 |
Correct |
5 ms |
3668 KB |
Output is correct |
31 |
Correct |
6 ms |
3668 KB |
Output is correct |
32 |
Correct |
7 ms |
3668 KB |
Output is correct |
33 |
Correct |
6 ms |
3724 KB |
Output is correct |
34 |
Correct |
5 ms |
3668 KB |
Output is correct |
35 |
Correct |
6 ms |
3660 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2644 KB |
Output is correct |
2 |
Correct |
6 ms |
3668 KB |
Output is correct |
3 |
Correct |
6 ms |
3668 KB |
Output is correct |
4 |
Correct |
6 ms |
3668 KB |
Output is correct |
5 |
Correct |
292 ms |
46980 KB |
Output is correct |
6 |
Correct |
339 ms |
45096 KB |
Output is correct |
7 |
Correct |
313 ms |
47628 KB |
Output is correct |
8 |
Correct |
269 ms |
43068 KB |
Output is correct |
9 |
Correct |
241 ms |
42428 KB |
Output is correct |
10 |
Correct |
392 ms |
47036 KB |
Output is correct |
11 |
Correct |
416 ms |
47552 KB |
Output is correct |
12 |
Correct |
386 ms |
47680 KB |
Output is correct |
13 |
Correct |
411 ms |
48196 KB |
Output is correct |
14 |
Correct |
417 ms |
47160 KB |
Output is correct |
15 |
Correct |
455 ms |
54276 KB |
Output is correct |
16 |
Correct |
479 ms |
54968 KB |
Output is correct |
17 |
Correct |
424 ms |
54072 KB |
Output is correct |
18 |
Correct |
449 ms |
47324 KB |
Output is correct |
19 |
Correct |
433 ms |
47068 KB |
Output is correct |
20 |
Correct |
445 ms |
47136 KB |
Output is correct |
21 |
Correct |
390 ms |
52164 KB |
Output is correct |
22 |
Correct |
336 ms |
52292 KB |
Output is correct |
23 |
Correct |
349 ms |
52236 KB |
Output is correct |
24 |
Correct |
333 ms |
52284 KB |
Output is correct |
25 |
Correct |
347 ms |
49668 KB |
Output is correct |
26 |
Correct |
348 ms |
49988 KB |
Output is correct |
27 |
Correct |
340 ms |
50104 KB |
Output is correct |
28 |
Correct |
243 ms |
49824 KB |
Output is correct |
29 |
Correct |
203 ms |
51212 KB |
Output is correct |
30 |
Correct |
301 ms |
49876 KB |
Output is correct |
31 |
Correct |
287 ms |
50248 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2684 KB |
Output is correct |
2 |
Correct |
5 ms |
3688 KB |
Output is correct |
3 |
Correct |
5 ms |
3724 KB |
Output is correct |
4 |
Correct |
6 ms |
3668 KB |
Output is correct |
5 |
Correct |
301 ms |
51692 KB |
Output is correct |
6 |
Correct |
242 ms |
51212 KB |
Output is correct |
7 |
Correct |
308 ms |
42948 KB |
Output is correct |
8 |
Correct |
449 ms |
53688 KB |
Output is correct |
9 |
Correct |
493 ms |
53832 KB |
Output is correct |
10 |
Correct |
400 ms |
53820 KB |
Output is correct |
11 |
Correct |
334 ms |
53912 KB |
Output is correct |
12 |
Correct |
343 ms |
53860 KB |
Output is correct |
13 |
Correct |
395 ms |
53768 KB |
Output is correct |
14 |
Correct |
302 ms |
53836 KB |
Output is correct |
15 |
Correct |
291 ms |
53616 KB |
Output is correct |
16 |
Correct |
417 ms |
53924 KB |
Output is correct |
17 |
Correct |
337 ms |
53784 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2644 KB |
Output is correct |
2 |
Correct |
2 ms |
2644 KB |
Output is correct |
3 |
Correct |
1 ms |
2644 KB |
Output is correct |
4 |
Correct |
2 ms |
2644 KB |
Output is correct |
5 |
Correct |
6 ms |
3552 KB |
Output is correct |
6 |
Correct |
5 ms |
3712 KB |
Output is correct |
7 |
Correct |
5 ms |
3540 KB |
Output is correct |
8 |
Correct |
6 ms |
3668 KB |
Output is correct |
9 |
Correct |
6 ms |
3540 KB |
Output is correct |
10 |
Correct |
6 ms |
3668 KB |
Output is correct |
11 |
Correct |
6 ms |
3588 KB |
Output is correct |
12 |
Correct |
6 ms |
3668 KB |
Output is correct |
13 |
Correct |
6 ms |
3728 KB |
Output is correct |
14 |
Correct |
6 ms |
3720 KB |
Output is correct |
15 |
Correct |
6 ms |
3668 KB |
Output is correct |
16 |
Correct |
6 ms |
3588 KB |
Output is correct |
17 |
Correct |
6 ms |
3668 KB |
Output is correct |
18 |
Correct |
8 ms |
3604 KB |
Output is correct |
19 |
Correct |
6 ms |
3668 KB |
Output is correct |
20 |
Correct |
6 ms |
3668 KB |
Output is correct |
21 |
Correct |
6 ms |
3732 KB |
Output is correct |
22 |
Correct |
5 ms |
3668 KB |
Output is correct |
23 |
Correct |
5 ms |
3668 KB |
Output is correct |
24 |
Correct |
5 ms |
3696 KB |
Output is correct |
25 |
Correct |
5 ms |
3668 KB |
Output is correct |
26 |
Correct |
4 ms |
3708 KB |
Output is correct |
27 |
Correct |
4 ms |
3668 KB |
Output is correct |
28 |
Correct |
5 ms |
3592 KB |
Output is correct |
29 |
Correct |
5 ms |
3848 KB |
Output is correct |
30 |
Correct |
5 ms |
3668 KB |
Output is correct |
31 |
Correct |
6 ms |
3668 KB |
Output is correct |
32 |
Correct |
7 ms |
3668 KB |
Output is correct |
33 |
Correct |
6 ms |
3724 KB |
Output is correct |
34 |
Correct |
5 ms |
3668 KB |
Output is correct |
35 |
Correct |
6 ms |
3660 KB |
Output is correct |
36 |
Correct |
2 ms |
2644 KB |
Output is correct |
37 |
Correct |
6 ms |
3668 KB |
Output is correct |
38 |
Correct |
6 ms |
3668 KB |
Output is correct |
39 |
Correct |
6 ms |
3668 KB |
Output is correct |
40 |
Correct |
292 ms |
46980 KB |
Output is correct |
41 |
Correct |
339 ms |
45096 KB |
Output is correct |
42 |
Correct |
313 ms |
47628 KB |
Output is correct |
43 |
Correct |
269 ms |
43068 KB |
Output is correct |
44 |
Correct |
241 ms |
42428 KB |
Output is correct |
45 |
Correct |
392 ms |
47036 KB |
Output is correct |
46 |
Correct |
416 ms |
47552 KB |
Output is correct |
47 |
Correct |
386 ms |
47680 KB |
Output is correct |
48 |
Correct |
411 ms |
48196 KB |
Output is correct |
49 |
Correct |
417 ms |
47160 KB |
Output is correct |
50 |
Correct |
455 ms |
54276 KB |
Output is correct |
51 |
Correct |
479 ms |
54968 KB |
Output is correct |
52 |
Correct |
424 ms |
54072 KB |
Output is correct |
53 |
Correct |
449 ms |
47324 KB |
Output is correct |
54 |
Correct |
433 ms |
47068 KB |
Output is correct |
55 |
Correct |
445 ms |
47136 KB |
Output is correct |
56 |
Correct |
390 ms |
52164 KB |
Output is correct |
57 |
Correct |
336 ms |
52292 KB |
Output is correct |
58 |
Correct |
349 ms |
52236 KB |
Output is correct |
59 |
Correct |
333 ms |
52284 KB |
Output is correct |
60 |
Correct |
347 ms |
49668 KB |
Output is correct |
61 |
Correct |
348 ms |
49988 KB |
Output is correct |
62 |
Correct |
340 ms |
50104 KB |
Output is correct |
63 |
Correct |
243 ms |
49824 KB |
Output is correct |
64 |
Correct |
203 ms |
51212 KB |
Output is correct |
65 |
Correct |
301 ms |
49876 KB |
Output is correct |
66 |
Correct |
287 ms |
50248 KB |
Output is correct |
67 |
Correct |
1 ms |
2684 KB |
Output is correct |
68 |
Correct |
5 ms |
3688 KB |
Output is correct |
69 |
Correct |
5 ms |
3724 KB |
Output is correct |
70 |
Correct |
6 ms |
3668 KB |
Output is correct |
71 |
Correct |
301 ms |
51692 KB |
Output is correct |
72 |
Correct |
242 ms |
51212 KB |
Output is correct |
73 |
Correct |
308 ms |
42948 KB |
Output is correct |
74 |
Correct |
449 ms |
53688 KB |
Output is correct |
75 |
Correct |
493 ms |
53832 KB |
Output is correct |
76 |
Correct |
400 ms |
53820 KB |
Output is correct |
77 |
Correct |
334 ms |
53912 KB |
Output is correct |
78 |
Correct |
343 ms |
53860 KB |
Output is correct |
79 |
Correct |
395 ms |
53768 KB |
Output is correct |
80 |
Correct |
302 ms |
53836 KB |
Output is correct |
81 |
Correct |
291 ms |
53616 KB |
Output is correct |
82 |
Correct |
417 ms |
53924 KB |
Output is correct |
83 |
Correct |
337 ms |
53784 KB |
Output is correct |
84 |
Correct |
366 ms |
43004 KB |
Output is correct |
85 |
Correct |
350 ms |
36776 KB |
Output is correct |
86 |
Correct |
291 ms |
35968 KB |
Output is correct |
87 |
Correct |
547 ms |
47184 KB |
Output is correct |
88 |
Correct |
514 ms |
47340 KB |
Output is correct |
89 |
Correct |
530 ms |
47052 KB |
Output is correct |
90 |
Correct |
514 ms |
46948 KB |
Output is correct |
91 |
Correct |
526 ms |
47236 KB |
Output is correct |
92 |
Correct |
592 ms |
52072 KB |
Output is correct |
93 |
Correct |
524 ms |
53700 KB |
Output is correct |
94 |
Correct |
526 ms |
47316 KB |
Output is correct |
95 |
Correct |
481 ms |
47236 KB |
Output is correct |
96 |
Correct |
566 ms |
47280 KB |
Output is correct |
97 |
Correct |
489 ms |
47152 KB |
Output is correct |
98 |
Correct |
473 ms |
52308 KB |
Output is correct |
99 |
Correct |
419 ms |
52088 KB |
Output is correct |
100 |
Correct |
454 ms |
52248 KB |
Output is correct |
101 |
Correct |
433 ms |
52364 KB |
Output is correct |
102 |
Correct |
398 ms |
48220 KB |
Output is correct |
103 |
Correct |
381 ms |
48548 KB |
Output is correct |
104 |
Correct |
414 ms |
48664 KB |
Output is correct |
105 |
Correct |
268 ms |
48608 KB |
Output is correct |
106 |
Correct |
260 ms |
49032 KB |
Output is correct |
107 |
Correct |
361 ms |
49228 KB |
Output is correct |
108 |
Correct |
325 ms |
48916 KB |
Output is correct |