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Submission #1037775

# Submission time Handle Problem Language Result Execution time Memory
1037775 2024-07-29T08:13:46 Z stdfloat Palembang Bridges (APIO15_bridge) C++17
0 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

#define int long long

#define ff  first
#define ss  second
#define pii pair<int, int>

ll f(int x, vector<pii> &v) {
    ll sm = 0;
    for (auto i : v) sm += abs(i.ff - x) + 1 + abs(i.ss - x);
    
    return sm;
}

int32_t main() {
    ios::sync_with_stdio(false); cin.tie(nullptr);

    int k, n;
    cin >> k >> n;

    ll sm = 0;
    vector<pii> v;
    for (int i = 0; i < n; i++) {
        char p, q;
        int s, t;
        cin >> p >> s >> q >> t;
    
        if (p == q) sm += abs(t - s);
        else v.push_back({s, t});
    }

    ll ans = LLONG_MAX;
    for (int i = 0; i < (int)v.size(); i++) {
        vector<pii> u1, u2;
        for (int j = 0; j <= i; j++) u1.push_back(v[j]);
        for (int j = i + 1; j < (int)v.size(); j++) u2.push_back(v[j]);

        int l = 0, r = (int)1e9;
        while (l <= r) {
            int md = (l + r) >> 1;
        
            if (f(md, u1) >= f(md + 1, u1)) l = md + 1;
            else r = md - 1;
        }

        int l1 = 0, r1 = (int)1e9;
        while (l1 <= r1) {
            int md = (l1 + r1) >> 1;
        
            if (f(md, u2) >= f(md + 1, u2)) l1 = md + 1;
            else r1 = md - 1;
        }
    
        ans = min(ans, f(l, u1) + f(l1, u2));
    }

    cout << sm + ans;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -