Submission #1069872

#	Time	Username	Problem	Language	Result	Execution time	Memory
1069872		TheQuantiX	Shortcut (IOI16_shortcut)	C++17	0 / 100	1 ms	348 KiB

shortcut

#include <bits/stdc++.h>
#include "shortcut.h"

using namespace std;
using ll = long long;

constexpr ll INF = 1000000000000000000LL;

ll n, m, q, k, x, y, a, b, c;

long long find_shortcut(int n, vector<int> l, vector<int> d, int c) {
    vector<ll> pref(n);
    for (int i = 0; i < n - 1; i++) {
        pref[i + 1] = pref[i] + l[i];
    }
    deque< pair<ll, pair<ll, ll> > > v;
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            ll dist = pref[j] - pref[i];
            if (d[i] != 0 && d[j] != 0) {
                v.push_back({dist + d[i] + d[j], {i, j}});
            }
            if (d[i] != 0) {
                v.push_back({dist + d[i], {i, j}});
            }
            if (d[j] != 0) {
                v.push_back({dist + d[j], {i, j}});
            }
            v.push_back({dist, {i, j}});
        }
    }
    sort(v.rbegin(), v.rend());
    ll ans = v[0].first;
    ll L = 0, R = n - 1;
    for (int i = 0; i < v.size(); i++) {
        L = max(L, v[i].second.first);
        R = min(R, v[i].second.second);
        // cout << v[i].first << ' ' << v[i].second.first << ' ' << v[i].second.second << '\n';
        // cout << L << ' ' << R << '\n';
        if (R > L && pref[R] - pref[L] >= c) {
            ans = min(ans, max(v[0].first - (pref[R] - pref[L]) + c, v[i + 1].first));
        }
        else {
            break;
        }
    }
    return ans;
}

Compilation message (stderr)

shortcut.cpp: In function 'long long int find_shortcut(int, std::vector<int>, std::vector<int>, int)':
shortcut.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for (int i = 0; i < v.size(); i++) {
      |                     ~~^~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 14
• Subtask 3: 0 / 8
• Subtask 4: 0 / 7
• Subtask 5: 0 / 33
• Subtask 6: 0 / 22
• Subtask 7: 0 / 4
• Subtask 8: 0 / 3