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Submission #349968

# Submission time Handle Problem Language Result Execution time Memory
349968 2021-01-18T19:02:42 Z denkendoemeer Palembang Bridges (APIO15_bridge) C++14
100 / 100
 142 ms 5888 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll v[100005],s1,s2;
int mij;
vector<pair<int,int>>poz;
priority_queue<int>pq;
priority_queue<int,vector<int>,greater<int>>pq2;
void update(int x)
{
    if (x<mij)
        pq.push(x),s1+=x;
    else
        pq2.push(x),s2+=x;
    if (pq.size()+2<=pq2.size()){
        pq.push(mij);
        s1+=mij;
        mij=pq2.top();
        pq2.pop();
        s2-=mij;
    }
    else
        if (pq.size()>=pq2.size()+2){
            pq2.push(mij);
            s2+=mij;
            mij=pq.top();
            pq.pop();
            s1-=mij;
        }
}
int cmp(pair<int,int>a,pair<int,int>b)
{
    return a.second+a.first<b.first+b.second;
}
int main()
{
    //freopen(".in","r",stdin);
    //freopen(".out","w",stdout);
    int k,n,i;
    ll ans=0;
    scanf("%d%d",&k,&n);
    for(i=0;i<n;i++){
        char ch1,ch2;
        pair<int,int>x;
        cin>>ch1>>x.first>>ch2>>x.second;
        if (ch1!=ch2){
            poz.push_back(x);
            ++ans;
        }
        else
            ans+=abs(x.first-x.second);
    }
    sort(poz.begin(),poz.end(),cmp);
    for(i=0;i<poz.size();i++){
        update(poz[i].first);
        update(poz[i].second);
        v[i+1]=s2-(ll)pq2.size()*mij+((ll)pq.size()-1)*mij-s1;
    }
    ll ans2=v[poz.size()];
    if (k==2){
        pq=priority_queue<int>();
        pq2=priority_queue<int,vector<int>,greater<int>>();
        mij=s1=s2=0;
        for(i=poz.size()-1;i>0;i--){
            update(poz[i].first);
            update(poz[i].second);
            ans2=min(ans2,v[i]+s2-(ll)pq2.size()*mij+((ll)pq.size()-1)*mij-s1);
        }
    }
    printf("%lld\n",ans+ans2);
return 0;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:54:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for(i=0;i<poz.size();i++){
      |             ~^~~~~~~~~~~
bridge.cpp:41:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   41 |     scanf("%d%d",&k,&n);
      |     ~~~~~^~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 388 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 364 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 2 ms 364 KB Output is correct
11 Correct 2 ms 364 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 2 ms 364 KB Output is correct
12 Correct 64 ms 3936 KB Output is correct
13 Correct 128 ms 5728 KB Output is correct
14 Correct 87 ms 4192 KB Output is correct
15 Correct 74 ms 3544 KB Output is correct
16 Correct 94 ms 4832 KB Output is correct
17 Correct 123 ms 5472 KB Output is correct
18 Correct 99 ms 5216 KB Output is correct
19 Correct 125 ms 5472 KB Output is correct
20 Correct 103 ms 4988 KB Output is correct
21 Correct 116 ms 5216 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 2 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 2 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 69 ms 4404 KB Output is correct
26 Correct 88 ms 4376 KB Output is correct
27 Correct 132 ms 5088 KB Output is correct
28 Correct 142 ms 5888 KB Output is correct
29 Correct 141 ms 5760 KB Output is correct
30 Correct 73 ms 3164 KB Output is correct
31 Correct 105 ms 4852 KB Output is correct
32 Correct 133 ms 5504 KB Output is correct
33 Correct 102 ms 5492 KB Output is correct
34 Correct 137 ms 5504 KB Output is correct
35 Correct 108 ms 5376 KB Output is correct
36 Correct 129 ms 5248 KB Output is correct
37 Correct 68 ms 3968 KB Output is correct