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Submission #243306

# Submission time Handle Problem Language Result Execution time Memory
243306 2020-06-30T21:46:14 Z Leonardo_Paes Palembang Bridges (APIO15_bridge) C++17
63 / 100
 2000 ms 8148 KB 
#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
typedef long long ll;
const ll inf = 1e18+10;
typedef pair<ll,ll> pii;
int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    int k, n;
    cin >> k >> n;
    ll ans1 = 0, ans2 = 0;
    vector<ll> a, b, c;
    for(int i=1; i<=n; i++){
        int s, t;
        char p, q;
        cin >> p >> s >> q >> t;
        if(p == q) ans1 += abs(s - t);
        else{
            if(p == 'B') swap(s, t);
            if(s > t) swap(s, t);
            a.push_back(s);
            b.push_back(t);
        }
    }
    for(auto x : a) c.push_back(x);
    for(auto x : b) c.push_back(x);
    if(k == 1){
        for(auto x : a) c.push_back(x);
        for(auto x : b) c.push_back(x);
        sort(c.begin(), c.end());
        if(!c.empty()){
            ll opt = c[(int)c.size()/2];
            for(auto x : a) ans2 += abs(opt - x);
            for(auto x : b) ans2 += abs(opt - x);
        }
    }
    else if(!c.empty()){
        ans2 = inf;
        for(int i=0; i<c.size(); i++){
            priority_queue<pii, vector<pii>, greater<pii>> fila;
            ll g = 0, delta = 0;
            for(int j=0; j<a.size(); j++){
                if(a[j] <= c[i] and c[i] <= b[j]) g += b[j] - a[j];
                else{
                    ll gap = min(abs(a[j] - c[i]), abs(b[j] - c[i]));
                    g += 2*gap+b[j]-a[j];
                    fila.push({a[j], +2});
                    fila.push({b[j], +2});
                    fila.push({a[j] - gap, -2});
                    fila.push({b[j] + gap, -2});
                }
            }
            ll x = -inf;
            ans2 = min(ans2, g);
            while(!fila.empty()){
                pii event = fila.top();
                fila.pop();
                g += delta*(event.f - x);
                ans2 = min(ans2, g);
                x = event.f;
                delta += event.s;
            }
        }
    }
    cout << ans1 + ans2 + (int)a.size() << "\n";
    return 0;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<c.size(); i++){
                      ~^~~~~~~~~
bridge.cpp:43:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j=0; j<a.size(); j++){
                          ~^~~~~~~~~

Subtask #1
8.0 / 8.0

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

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 37 ms 6112 KB Output is correct
13 Correct 78 ms 6252 KB Output is correct
14 Correct 57 ms 5984 KB Output is correct
15 Correct 47 ms 3440 KB Output is correct
16 Correct 42 ms 6120 KB Output is correct
17 Correct 70 ms 6112 KB Output is correct
18 Correct 86 ms 6108 KB Output is correct
19 Correct 79 ms 6112 KB Output is correct
20 Correct 49 ms 6112 KB Output is correct
21 Correct 74 ms 6112 KB Output is correct

Subtask #3
9.0 / 9.0

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

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 8 ms 384 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 11 ms 384 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 11 ms 384 KB Output is correct
11 Correct 8 ms 384 KB Output is correct
12 Correct 11 ms 384 KB Output is correct
13 Correct 122 ms 384 KB Output is correct
14 Correct 599 ms 512 KB Output is correct
15 Correct 552 ms 512 KB Output is correct
16 Correct 15 ms 384 KB Output is correct
17 Correct 173 ms 760 KB Output is correct
18 Correct 77 ms 384 KB Output is correct
19 Correct 8 ms 384 KB Output is correct
20 Correct 753 ms 568 KB Output is correct
21 Correct 313 ms 512 KB Output is correct
22 Correct 878 ms 632 KB Output is correct
23 Correct 456 ms 608 KB Output is correct
24 Correct 835 ms 560 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 8 ms 384 KB Output is correct
5 Correct 6 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 10 ms 384 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 11 ms 384 KB Output is correct
11 Correct 8 ms 384 KB Output is correct
12 Correct 11 ms 384 KB Output is correct
13 Correct 119 ms 384 KB Output is correct
14 Correct 595 ms 632 KB Output is correct
15 Correct 550 ms 632 KB Output is correct
16 Correct 14 ms 384 KB Output is correct
17 Correct 171 ms 512 KB Output is correct
18 Correct 76 ms 384 KB Output is correct
19 Correct 8 ms 384 KB Output is correct
20 Correct 751 ms 568 KB Output is correct
21 Correct 312 ms 512 KB Output is correct
22 Correct 865 ms 568 KB Output is correct
23 Correct 451 ms 512 KB Output is correct
24 Correct 839 ms 528 KB Output is correct
25 Execution timed out 2092 ms 8148 KB Time limit exceeded
26 Halted 0 ms 0 KB -