Submission #566638

#	Time	Username	Problem	Language	Result	Execution time	Memory
566638		ac2hu	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	1 ms	212 KiB

bridge

#include <bits/stdc++.h>
#ifdef DEBUG
#include "../templates/debug.h"
#else 
#define deb(x...)
#endif
using namespace std;
#define int long long 
signed main() {
    iostream::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    int n,k;cin >> k >> n;
    vector<pair<int,int>> loc;
    int same_part = 0;
    vector<int> s;
    for(int i = 0;i<n;i++){
        char c1, c2;
        int a,b;
        cin >> c1 >> a >> c2 >> b;
        if(c1 == c2){
            same_part += abs(a - b);
        }
        else{
            s.push_back(a);
            s.push_back(b);
            s.push_back(a - 1);
            s.push_back(b - 1);
            same_part++;
            if(a > b)swap(a, b);
            loc.emplace_back(a, b);
        }
    }
    s.push_back(0);
    sort(s.begin(), s.end());
    s.erase(unique(s.begin(), s.end()), s.end());
    int ans = 1e18;
    for(uint i = 0;i<s.size();i++){
        for(uint ii = i + 1;ii<s.size();ii++){
            int b1 = s[i], b2 = s[ii];
            int temp = same_part;
            for(auto [l, r] : loc){
                if(l <= b1 && b1 <= r){
                    temp += abs(l - r);
                }
                else if(l <= b2 && b2 <= r){
                    temp += abs(l - r);
                }
                else{
                    int db1 = abs(l + r - 2*b1);
                    int db2 = abs(l + r - 2*b2);
                    temp += min(db1, db2);
                }
            }
            ans = min(ans, temp);
        }
    }
    cout << ans << "\n";
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:41:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   41 |             for(auto [l, r] : loc){
      |                      ^

• Subtask 1: 0 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37