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Submission #536210

# Submission time Handle Problem Language Result Execution time Memory
536210 2022-03-12T15:20:05 Z Tam_theguide Palembang Bridges (APIO15_bridge) C++14
100 / 100
 347 ms 13652 KB 
#include <bits/stdc++.h>
using namespace std;
int n, k;

long long sameside=0;
vector<pair<int, int>>diff;
bool comp(pair<int, int>a, pair<int, int>b){
    return (a.first+a.second<b.first+b.second);
}
long long pre[100005];
multiset<int>low;
multiset<int>up;
long long lowsum=0;
long long upsum=0;
long long res=0;
void add(int x){
    if (low.size()==0){
        low.insert(x);
        lowsum+=x;
        return;
    }
    if (x<=*(--low.end())){
        low.insert(x);
        lowsum+=x;
    }else{
        up.insert(x);
        upsum+=x;
    }
}
long long ans=2e18;
void rebalance(){
    while (up.size()>low.size()){
        low.insert(*(up.begin()));
        lowsum+=*(up.begin());
        upsum-=*(up.begin());
        up.erase(up.begin());
    }
    while (low.size()>up.size()+1){
        up.insert(*(--low.end()));
        upsum+=*(--low.end());
        lowsum-=*(--low.end());
        low.erase(--low.end());
    }
}
void INSERT(int val){
    add(val);
    rebalance();
}
int main(){
    cin>>k>>n;
    for (int i=1;i <=n; i++){
        char a, b;
        int x, y;
        cin>>a>>x>>b>>y;
        if (a==b){
            sameside+=abs(x-y);
        }else{
            diff.push_back({x, y});
        }

    }
   // diff={{1, 1}, {2, 2}, {3, 4}, {5, 8}};
    int n_=diff.size();
    sameside+=n_;

    sort(diff.begin(), diff.end(), comp);

    for (int i=0; i<diff.size(); i++){
        INSERT(diff[i].first);
        INSERT(diff[i].second);
        pre[i]=*(--low.end())*((int)low.size())-lowsum+upsum-(*(--low.end())*((int)up.size()));
        //cout<<i<<" "<<pre[i]<<'\n';

    }
    ans=pre[n_-1];
    if (k==2){
        low.clear();
        up.clear();
        lowsum=upsum=0;
        for (int i=n_-1; i>=0; i--){
            INSERT(diff[i].first);
            INSERT(diff[i].second);
            ans=min(ans, *(--low.end())*((int)low.size())-lowsum+upsum-(*(--low.end())*((int)up.size())) + pre[i-1]);
        }
        cout<<ans+sameside;

    }else
    cout<<pre[n_-1]+sameside;



}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:68:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |     for (int i=0; i<diff.size(); i++){
      |                   ~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 ms 328 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 2 ms 428 KB Output is correct
8 Correct 2 ms 328 KB Output is correct
9 Correct 2 ms 452 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 2 ms 324 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 456 KB Output is correct
10 Correct 2 ms 336 KB Output is correct
11 Correct 3 ms 344 KB Output is correct
12 Correct 105 ms 11964 KB Output is correct
13 Correct 258 ms 13572 KB Output is correct
14 Correct 145 ms 11392 KB Output is correct
15 Correct 107 ms 8104 KB Output is correct
16 Correct 167 ms 12828 KB Output is correct
17 Correct 146 ms 13652 KB Output is correct
18 Correct 135 ms 13160 KB Output is correct
19 Correct 184 ms 13480 KB Output is correct
20 Correct 138 ms 13136 KB Output is correct
21 Correct 145 ms 13348 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 1 ms 316 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 308 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 316 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 2 ms 316 KB Output is correct
14 Correct 2 ms 320 KB Output is correct
15 Correct 2 ms 352 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 316 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 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 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 3 ms 456 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 3 ms 340 KB Output is correct
23 Correct 2 ms 344 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 170 ms 12052 KB Output is correct
26 Correct 241 ms 12212 KB Output is correct
27 Correct 338 ms 12940 KB Output is correct
28 Correct 344 ms 13564 KB Output is correct
29 Correct 347 ms 13568 KB Output is correct
30 Correct 165 ms 7324 KB Output is correct
31 Correct 182 ms 12892 KB Output is correct
32 Correct 207 ms 13588 KB Output is correct
33 Correct 179 ms 13088 KB Output is correct
34 Correct 228 ms 13576 KB Output is correct
35 Correct 192 ms 13180 KB Output is correct
36 Correct 218 ms 13224 KB Output is correct
37 Correct 184 ms 11932 KB Output is correct