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답안 #114947

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
114947 2019-06-04T05:03:18 Z Mercenary Palembang Bridges (APIO15_bridge) C++14
100 / 100
 106 ms 4100 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);
        }
    }
    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:83:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0 ; i < a.size() ; ++i){
                     ~~^~~~~~~~~~
bridge.cpp:93:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0 ; i < a.size() ; ++i){
                         ~~^~~~~~~~~~
bridge.cpp:59:10: 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:60:10: 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

# 결과 실행 시간 메모리 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 3 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 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 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 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 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 34 ms 3952 KB Output is correct
13 Correct 92 ms 4076 KB Output is correct
14 Correct 74 ms 3696 KB Output is correct
15 Correct 52 ms 2556 KB Output is correct
16 Correct 33 ms 3952 KB Output is correct
17 Correct 79 ms 3952 KB Output is correct
18 Correct 47 ms 3952 KB Output is correct
19 Correct 85 ms 4048 KB Output is correct
20 Correct 55 ms 3992 KB Output is correct
21 Correct 83 ms 4100 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 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

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 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 3 ms 384 KB Output is correct
8 Correct 2 ms 428 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 2 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 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 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct

Subtask #5
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 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 2 ms 384 KB Output is correct
15 Correct 2 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 2 ms 380 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
25 Correct 35 ms 3960 KB Output is correct
26 Correct 67 ms 3960 KB Output is correct
27 Correct 106 ms 3952 KB Output is correct
28 Correct 89 ms 4080 KB Output is correct
29 Correct 86 ms 4080 KB Output is correct
30 Correct 45 ms 2428 KB Output is correct
31 Correct 34 ms 3952 KB Output is correct
32 Correct 78 ms 3952 KB Output is correct
33 Correct 46 ms 3952 KB Output is correct
34 Correct 85 ms 4076 KB Output is correct
35 Correct 54 ms 4080 KB Output is correct
36 Correct 84 ms 4000 KB Output is correct
37 Correct 26 ms 3928 KB Output is correct