oj.uz

Submission #114946

# Submission time Handle Problem Language Result Execution time Memory
114946 2019-06-04T05:02:33 Z Mercenary Palembang Bridges (APIO15_bridge) C++14
100 / 100
 92 ms 6384 KB 
#include<bits/stdc++.h>

using namespace std;
#define taskname "A"
#define pb	push_back
#define mp 	make_pair
#ifndef LOCAL
#define cerr if(0)cout
#endif

typedef long double ld;
typedef long long ll;
typedef pair<int,int> ii;
const int maxn = 1e5 + 5;

int k , n;
vector<ii> a;

namespace Median_heap{
    ll lsum , hsum;
    priority_queue<int,vector<int>,greater<int>> h;
    priority_queue<int> l;
    void add(int a , int b){
        if(a > b)swap(a,b);
        l.push(a);h.push(b);
        lsum += a , hsum += b;
        while(l.top() > h.top()){
            int u = l.top();int v = h.top();
            lsum += v - u;
            hsum += u - v;
            l.pop();h.pop();
            l.push(v);
            h.push(u);
        }
        while(l.size() > h.size()){
            int u = l.top();
            l.pop();
            h.push(u);
            lsum += -u;
            hsum += u;
        }
        while(l.size() < h.size()){
            int u = h.top();
            h.pop();
            l.push(u);
            lsum += u;
            hsum += -u;
        }
    }
    ll Now(){
        assert(l.size() == h.size());
//        cout << hsum << " " << lsum << endl;
        return hsum - lsum;
    }
    void clear(){
        lsum = hsum = 0;
        while(!l.empty()){
            cerr << l.top() << endl;
            l.pop();
        }
        while(!h.empty()){
            cerr << h.top() << endl;
            h.pop();
        }
    }
};

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen(taskname".INP","r")){
		freopen(taskname".INP", "r",stdin);
		freopen(taskname".OUT", "w",stdout);
    }
    cin >> k >> n;
    ll res = 0;
    ll res1 = (ll)1e18;
    for(int i = 1 ; i <= n ; ++i){
        char side , side1;
        int x, y;
        cin >> side >> x >> side1 >> y;
        if(x > y)swap(x,y);
        if(side == side1){
            res += y - x;
        }else{
            res++;
            a.pb(mp(x,y));
        }
    }
    if(a.size() == 0)return cout << res , 0;
    sort(a.begin(),a.end(),[](const ii x , const ii y){
            return x.first + x.second < y.first + y.second;
         });
    vector<ll> pre(a.size() + 2 , 0) , suf(a.size() + 2 , 0);
    Median_heap::clear();
    for(int i = 0 ; i < a.size() ; ++i){
        Median_heap::add(a[i].first,a[i].second);
        pre[i] = Median_heap::Now();
    }
    Median_heap::clear();
    for(int i = a.size() - 1 ; i >= 0 ; --i){
        Median_heap::add(a[i].first,a[i].second);
        suf[i] = Median_heap::Now();
    }
    if(k == 2){
        for(int i = 0 ; i < a.size() ; ++i){
            res1 = min(res1 , pre[i] + suf[i + 1]);
        }
    }else res1 = pre[a.size() - 1];
    assert(suf[0] == pre[a.size() -1]);
    res += res1;
    cout << res;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:97:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0 ; i < a.size() ; ++i){
                     ~~^~~~~~~~~~
bridge.cpp:107:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0 ; i < a.size() ; ++i){
                         ~~^~~~~~~~~~
bridge.cpp:73:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".INP", "r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:74:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".OUT", "w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 34 ms 3952 KB Output is correct
13 Correct 87 ms 4032 KB Output is correct
14 Correct 71 ms 3700 KB Output is correct
15 Correct 50 ms 2800 KB Output is correct
16 Correct 34 ms 3952 KB Output is correct
17 Correct 79 ms 3952 KB Output is correct
18 Correct 48 ms 3960 KB Output is correct
19 Correct 86 ms 3952 KB Output is correct
20 Correct 56 ms 3952 KB Output is correct
21 Correct 86 ms 3952 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct

Subtask #4
32.0 / 32.0

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

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 36 ms 4080 KB Output is correct
26 Correct 65 ms 4980 KB Output is correct
27 Correct 86 ms 5744 KB Output is correct
28 Correct 92 ms 6380 KB Output is correct
29 Correct 92 ms 6256 KB Output is correct
30 Correct 47 ms 3648 KB Output is correct
31 Correct 36 ms 5616 KB Output is correct
32 Correct 89 ms 6384 KB Output is correct
33 Correct 51 ms 6000 KB Output is correct
34 Correct 86 ms 6256 KB Output is correct
35 Correct 55 ms 5872 KB Output is correct
36 Correct 84 ms 6088 KB Output is correct
37 Correct 27 ms 4728 KB Output is correct