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Submission #396993

# Submission time Handle Problem Language Result Execution time Memory
396993 2021-05-01T04:46:29 Z leinad2 Palembang Bridges (APIO15_bridge) C++17
100 / 100
 93 ms 8708 KB 
#include<bits/stdc++.h>
#define int long long
using namespace std;
char c, d;
int a, b, n, i, j, k;
long long ans, ans2=1e18, A[100010], B[100010], sum1, sum2;
struct st
{
    int a, b;
};
vector<st>v;vector<int>v1;
bool cmp(st a, st b)
{
    return a.a+a.b<b.a+b.b;
}
priority_queue<int>pq2;
priority_queue<int, vector<int>, greater<int> >pq1;
main()
{
    ios_base::sync_with_stdio(!cin.tie(NULL));
    for(cin>>k>>n;i++<n;)
    {
        cin>>c>>a>>d>>b;
        if(c==d)ans+=abs(b-a);
        else if(k==2)ans++,v.push_back({a, b});
        else ans++,v1.push_back(a),v1.push_back(b);
    }
    if(k==1)
    {
        sort(v1.begin(), v1.end());
        for(i=0;i<v1.size()/2;i++)ans-=v1[i];
        for(i=v1.size()/2;i<v1.size();i++)ans+=v1[i];
        cout<<ans;return 0;
    }
    sort(v.begin(), v.end(), cmp);
    for(i=0;i<v.size();i++)
    {
        if(v[i].a>v[i].b)swap(v[i].a, v[i].b);
        if(pq1.size()==0)
        {
            pq1.push(v[i].b);sum1+=v[i].b;
            pq2.push(v[i].a);sum2+=v[i].a;
        }
        else
        {
            if(v[i].b<=pq2.top())
            {
                a=pq2.top();
                pq1.push(a);sum1+=a;
                pq2.pop();sum2-=a;
                pq2.push(v[i].a);sum2+=v[i].a;
                pq2.push(v[i].b);sum2+=v[i].b;
            }
            else if(v[i].a<=pq1.top())
            {
                pq2.push(v[i].a);sum2+=v[i].a;
                pq1.push(v[i].b);sum1+=v[i].b;
            }
            else
            {
                a=pq1.top();
                pq2.push(a);sum2+=a;
                pq1.pop();sum1-=a;
                pq1.push(v[i].a);sum1+=v[i].a;
                pq1.push(v[i].b);sum1+=v[i].b;
            }
        }
        A[i+1]=sum1-sum2;
    }
    sum1=sum2=0;while(pq1.size())pq1.pop();while(pq2.size())pq2.pop();
    i=v.size();
    for(i--;i>=0;i--)
    {
        if(pq1.size()==0)
        {
            pq1.push(v[i].b);sum1+=v[i].b;
            pq2.push(v[i].a);sum2+=v[i].a;
        }
        else
        {
            if(v[i].b<=pq2.top())
            {
                a=pq2.top();
                pq1.push(a);sum1+=a;
                pq2.pop();sum2-=a;
                pq2.push(v[i].a);sum2+=v[i].a;
                pq2.push(v[i].b);sum2+=v[i].b;
            }
            else if(v[i].a<=pq1.top())
            {
                pq2.push(v[i].a);sum2+=v[i].a;
                pq1.push(v[i].b);sum1+=v[i].b;
            }
            else
            {
                a=pq1.top();
                pq2.push(a);sum2+=a;
                pq1.pop();sum1-=a;
                pq1.push(v[i].a);sum1+=v[i].a;
                pq1.push(v[i].b);sum1+=v[i].b;
            }
        }
        B[i]=sum1-sum2;
    }
    for(i=0;i<=v.size();i++)
    {
        ans2=min(ans2, A[i]+B[i]);
    }
    cout<<ans+ans2;
}

Compilation message

bridge.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   18 | main()
      |      ^
bridge.cpp: In function 'int main()':
bridge.cpp:31:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         for(i=0;i<v1.size()/2;i++)ans-=v1[i];
      |                 ~^~~~~~~~~~~~
bridge.cpp:32:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         for(i=v1.size()/2;i<v1.size();i++)ans+=v1[i];
      |                           ~^~~~~~~~~~
bridge.cpp:36:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<st>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(i=0;i<v.size();i++)
      |             ~^~~~~~~~~
bridge.cpp:105:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<st>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |     for(i=0;i<=v.size();i++)
      |             ~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 23 ms 2460 KB Output is correct
13 Correct 44 ms 2484 KB Output is correct
14 Correct 36 ms 2436 KB Output is correct
15 Correct 26 ms 1484 KB Output is correct
16 Correct 39 ms 2512 KB Output is correct
17 Correct 33 ms 2496 KB Output is correct
18 Correct 39 ms 2504 KB Output is correct
19 Correct 45 ms 2432 KB Output is correct
20 Correct 31 ms 2524 KB Output is correct
21 Correct 40 ms 2432 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 224 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 49 ms 6116 KB Output is correct
26 Correct 69 ms 7272 KB Output is correct
27 Correct 86 ms 8040 KB Output is correct
28 Correct 92 ms 8656 KB Output is correct
29 Correct 91 ms 8704 KB Output is correct
30 Correct 51 ms 4412 KB Output is correct
31 Correct 42 ms 8040 KB Output is correct
32 Correct 93 ms 8616 KB Output is correct
33 Correct 56 ms 8244 KB Output is correct
34 Correct 81 ms 8708 KB Output is correct
35 Correct 59 ms 8268 KB Output is correct
36 Correct 88 ms 8364 KB Output is correct
37 Correct 39 ms 7056 KB Output is correct