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Submission #909120

# Submission time Handle Problem Language Result Execution time Memory
909120 2024-01-17T05:34:21 Z ibm2006 Dynamic Diameter (CEOI19_diameter) C++17
24 / 100
 5000 ms 43440 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
ll n,i,j,k,l,r,x,y,z,w,s,t,h[1100000],ans,qu;
vector<pair<ll,ll>> v[1100000];
pair<ll,ll> pq;
pair<ll,pair<ll,ll>> p[1100000],q[1100000];
pair<ll,ll> f(ll x,ll y)
{
    ll i;
    pair<ll,ll> p={x,0},q;
    for(i=0;i<h[x];i++)
    {
        if(v[x][i].first==y)
            continue;
        q=f(v[x][i].first,x);
        if(q.second+v[x][i].second>p.second)
        {
            p={q.first,q.second+v[x][i].second};
        }
    }
    return p;
}
int main()
{
    scanf("%lld %lld %lld",&n,&qu,&w);
    for(i=1;i<n;i++)
    {
        scanf("%lld %lld %lld",&x,&y,&z);
        p[i]={x,{h[x],z}};
        q[i]={y,{h[y],z}};
        v[x].push_back({y,z});
        v[y].push_back({x,z});
        h[x]++;
        h[y]++;
    }
    for(i=1;i<=qu;i++)
    {
        scanf("%lld %lld",&x,&y);
        x=(x+ans)%(n-1);
        y=(y+ans)%w;
        x++;
        v[p[x].first][p[x].second.first].second=y;
        p[x].second.second=y;
         v[q[x].first][q[x].second.first].second=y;
        q[x].second.second=y;
        pq=f(1,0);
        ans=f(pq.first,0).second;
        printf("%lld\n",ans);
    }
}

Compilation message

diameter.cpp: In function 'int main()':
diameter.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%lld %lld %lld",&n,&qu,&w);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
diameter.cpp:29:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         scanf("%lld %lld %lld",&x,&y,&z);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
diameter.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         scanf("%lld %lld",&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 29016 KB Output is correct
2 Correct 8 ms 29020 KB Output is correct
3 Correct 8 ms 29016 KB Output is correct
4 Correct 8 ms 29020 KB Output is correct
5 Correct 8 ms 29136 KB Output is correct
6 Correct 8 ms 29016 KB Output is correct
7 Correct 8 ms 29184 KB Output is correct
8 Correct 8 ms 29020 KB Output is correct
9 Correct 9 ms 29172 KB Output is correct
10 Correct 9 ms 29032 KB Output is correct
11 Correct 9 ms 29020 KB Output is correct
12 Correct 10 ms 29020 KB Output is correct
13 Correct 9 ms 29172 KB Output is correct
14 Correct 9 ms 29016 KB Output is correct
15 Correct 8 ms 29020 KB Output is correct
16 Correct 9 ms 29104 KB Output is correct
17 Correct 9 ms 29016 KB Output is correct
18 Correct 8 ms 29020 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 29016 KB Output is correct
2 Correct 8 ms 29020 KB Output is correct
3 Correct 8 ms 29016 KB Output is correct
4 Correct 8 ms 29020 KB Output is correct
5 Correct 8 ms 29136 KB Output is correct
6 Correct 8 ms 29016 KB Output is correct
7 Correct 8 ms 29184 KB Output is correct
8 Correct 8 ms 29020 KB Output is correct
9 Correct 9 ms 29172 KB Output is correct
10 Correct 9 ms 29032 KB Output is correct
11 Correct 9 ms 29020 KB Output is correct
12 Correct 10 ms 29020 KB Output is correct
13 Correct 9 ms 29172 KB Output is correct
14 Correct 9 ms 29016 KB Output is correct
15 Correct 8 ms 29020 KB Output is correct
16 Correct 9 ms 29104 KB Output is correct
17 Correct 9 ms 29016 KB Output is correct
18 Correct 8 ms 29020 KB Output is correct
19 Correct 70 ms 29272 KB Output is correct
20 Correct 72 ms 29284 KB Output is correct
21 Correct 79 ms 29320 KB Output is correct
22 Correct 114 ms 29384 KB Output is correct
23 Correct 651 ms 29644 KB Output is correct
24 Correct 791 ms 29776 KB Output is correct
25 Correct 890 ms 29728 KB Output is correct
26 Correct 1165 ms 30288 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 29272 KB Output is correct
2 Correct 9 ms 29020 KB Output is correct
3 Correct 10 ms 29016 KB Output is correct
4 Correct 18 ms 29532 KB Output is correct
5 Correct 55 ms 30260 KB Output is correct
6 Correct 9 ms 29272 KB Output is correct
7 Correct 9 ms 29016 KB Output is correct
8 Correct 9 ms 29020 KB Output is correct
9 Correct 18 ms 29020 KB Output is correct
10 Correct 95 ms 29272 KB Output is correct
11 Correct 427 ms 30804 KB Output is correct
12 Correct 11 ms 29564 KB Output is correct
13 Correct 20 ms 29528 KB Output is correct
14 Correct 87 ms 29532 KB Output is correct
15 Correct 767 ms 30040 KB Output is correct
16 Correct 3784 ms 31104 KB Output is correct
17 Correct 55 ms 41412 KB Output is correct
18 Correct 189 ms 41396 KB Output is correct
19 Correct 1646 ms 41808 KB Output is correct
20 Execution timed out 5053 ms 41980 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 29276 KB Output is correct
2 Correct 98 ms 29352 KB Output is correct
3 Correct 457 ms 29896 KB Output is correct
4 Correct 904 ms 30588 KB Output is correct
5 Correct 141 ms 32244 KB Output is correct
6 Correct 1186 ms 32224 KB Output is correct
7 Execution timed out 5056 ms 32776 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5007 ms 43440 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 29016 KB Output is correct
2 Correct 8 ms 29020 KB Output is correct
3 Correct 8 ms 29016 KB Output is correct
4 Correct 8 ms 29020 KB Output is correct
5 Correct 8 ms 29136 KB Output is correct
6 Correct 8 ms 29016 KB Output is correct
7 Correct 8 ms 29184 KB Output is correct
8 Correct 8 ms 29020 KB Output is correct
9 Correct 9 ms 29172 KB Output is correct
10 Correct 9 ms 29032 KB Output is correct
11 Correct 9 ms 29020 KB Output is correct
12 Correct 10 ms 29020 KB Output is correct
13 Correct 9 ms 29172 KB Output is correct
14 Correct 9 ms 29016 KB Output is correct
15 Correct 8 ms 29020 KB Output is correct
16 Correct 9 ms 29104 KB Output is correct
17 Correct 9 ms 29016 KB Output is correct
18 Correct 8 ms 29020 KB Output is correct
19 Correct 70 ms 29272 KB Output is correct
20 Correct 72 ms 29284 KB Output is correct
21 Correct 79 ms 29320 KB Output is correct
22 Correct 114 ms 29384 KB Output is correct
23 Correct 651 ms 29644 KB Output is correct
24 Correct 791 ms 29776 KB Output is correct
25 Correct 890 ms 29728 KB Output is correct
26 Correct 1165 ms 30288 KB Output is correct
27 Correct 9 ms 29272 KB Output is correct
28 Correct 9 ms 29020 KB Output is correct
29 Correct 10 ms 29016 KB Output is correct
30 Correct 18 ms 29532 KB Output is correct
31 Correct 55 ms 30260 KB Output is correct
32 Correct 9 ms 29272 KB Output is correct
33 Correct 9 ms 29016 KB Output is correct
34 Correct 9 ms 29020 KB Output is correct
35 Correct 18 ms 29020 KB Output is correct
36 Correct 95 ms 29272 KB Output is correct
37 Correct 427 ms 30804 KB Output is correct
38 Correct 11 ms 29564 KB Output is correct
39 Correct 20 ms 29528 KB Output is correct
40 Correct 87 ms 29532 KB Output is correct
41 Correct 767 ms 30040 KB Output is correct
42 Correct 3784 ms 31104 KB Output is correct
43 Correct 55 ms 41412 KB Output is correct
44 Correct 189 ms 41396 KB Output is correct
45 Correct 1646 ms 41808 KB Output is correct
46 Execution timed out 5053 ms 41980 KB Time limit exceeded
47 Halted 0 ms 0 KB -