oj.uz

Submission #597478

# Submission time Handle Problem Language Result Execution time Memory
597478 2022-07-16T05:39:32 Z Hanksburger Ideal city (IOI12_city) C++17
23 / 100
 153 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
vector<pair<pair<int, int>, int> > b[100005];
vector<int> adj[100005], w;
vector<pair<int, int> > a;
long long ans;
int n;
long long dfs(int u, int p)
{
    long long sum=w[u];
    for (int v:adj[u])
    {
        if (v!=p)
        {
            long long x=dfs(v, u);
            ans=(ans+x*(n-x))%1000000000;
            sum+=x;
        }
    }
    return sum;
}
int DistanceSum(int N, int *X, int *Y)
{
    n=N;
    for (int z=0; z<2; z++)
    {
        int mn=2147483647, sz=0, cnt=0;
        for (int i=0; i<n; i++)
        {
            mn=min(mn, X[i]);
            sz=max(sz, X[i]);
        }
        sz-=mn;
        for (int i=0; i<n; i++)
            a.push_back({X[i]-mn, Y[i]});
        sort(a.begin(), a.end());
        for (int i=0; i<n; )
        {
            int ind=i+1;
            while (ind<n && a[i].first==a[ind].first && a[ind-1].second+1==a[ind].second)
                ind++;
            w.push_back(a[ind-1].second-a[i].second+1);
            b[a[i].first].push_back({{a[i].second, a[ind-1].second}, cnt++});
            i=ind;
        }
        for (int i=0; i<sz; i++)
        {
            int ind=0;
            for (int j=0; j<b[i].size(); j++)
            {
                while (ind<b[i+1].size() && b[i+1][ind].first.second<b[i][0].first.first)
                    ind++;
                while (ind<b[i+1].size() && b[i+1][ind].first.first<=b[i][j].first.second)
                {
                    int u=b[i][j].second, v=b[i+1][ind].second;
                    adj[u].push_back(v);
                    adj[v].push_back(u);
                    ind++;
                }
                ind=max(0, ind-1);
            }
        }
        dfs(0, 0);
        for (int i=0; i<N; i++)
            swap(X[i], Y[i]);
        a.clear();
        w.clear();
        for (int i=0; i<=sz; i++)
            b[i].clear();
        for (int i=0; i<cnt; i++)
            adj[i].clear();
    }
    return ans;
}

Compilation message

city.cpp: In function 'int DistanceSum(int, int*, int*)':
city.cpp:49:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |             for (int j=0; j<b[i].size(); j++)
      |                           ~^~~~~~~~~~~~
city.cpp:51:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |                 while (ind<b[i+1].size() && b[i+1][ind].first.second<b[i][0].first.first)
      |                        ~~~^~~~~~~~~~~~~~
city.cpp:53:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |                 while (ind<b[i+1].size() && b[i+1][ind].first.first<=b[i][j].first.second)
      |                        ~~~^~~~~~~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Runtime error 153 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #2
0 / 21.0

# Verdict Execution time Memory Grader output
1 Runtime error 129 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 5716 KB Output is correct
2 Correct 10 ms 5636 KB Output is correct
3 Correct 21 ms 6408 KB Output is correct
4 Correct 20 ms 6332 KB Output is correct
5 Correct 40 ms 7756 KB Output is correct
6 Correct 48 ms 7668 KB Output is correct
7 Correct 47 ms 7816 KB Output is correct
8 Correct 50 ms 7688 KB Output is correct
9 Correct 40 ms 7752 KB Output is correct
10 Correct 42 ms 11376 KB Output is correct

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Runtime error 145 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -