제출 #241260

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
241260		osaaateiasavtnl	Long Distance Coach (JOI17_coach)	C++17	0 / 100	5 ms	384 KiB

coach

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
signed main() {
    #ifdef HOME
    freopen("input.txt", "r", stdin);
    #else
    #define endl '\n'
    ios_base::sync_with_stdio(0); cin.tie(0);
    #endif
    int x, n, m, w, t;
    cin >> x >> n >> m >> w >> t;
 
    //first - d, second - c
 
    vector <int> s(n);
    for (int i = 0; i < n; ++i) 
        cin >> s[i];
    sort(all(s));
    s.app(x);
 
    vector <ii> a(m);
    for (int i = 0; i < m; ++i) 
        cin >> a[i].f >> a[i].s;
 
    sort(all(a));
    reverse(all(a));
    a.insert(a.begin(), mp(0, 0));

    map <int, int> pos;
    for (int i = 0; i < a.size(); ++i)
        pos[a[i].f] = i;        

    vector <int> c;
    for (auto e : a)    
        c.app(e.f);
    sort(all(c));

    vector <int> last(s.size()), mem(a.size(), s.size());
    for (int i = 0; i < s.size(); ++i) {
        int p = lower_bound(all(c), s[i]%t) - c.begin();
        p = (p - 1 + c.size()) % c.size();
        last[i] = pos[c[p]];
        mem[last[i]] = min(mem[last[i]], i);
    }
    vector <int> dp(a.size()+1);
    vector <int> rel(a.size()+1);
    rel[0] = dp[0] = (x/t+1)*w;

    const int INF = 1e9;
    vector <ii> lf;
    for (int j = 1; j <= a.size(); ++j) {
        if (mem[j-1] != s.size()) {
            auto add = mp(mem[j-1], j-1);
            while (lf.size() && add < lf.back()) {
                lf.pop_back();
            }   
            lf.app(add);
        }
        if (lf.empty()) {
            for (int i = 0; i < j - 1; ++i)
                rel[i] = -1;
        }
        else {
            lf.back().s = j-1;
        }   

        int l = 0;
        for (auto e : lf) {
            int lf = e.f;
            for (int i = l; i < e.s; ++i) {
                if (rel[i] != -1) {
                    rel[i] += a[j-1].s;
                    if (s[lf] > a[j-1].f) 
                        rel[i] += (s[lf]/t+a[j-1].f/t+(s[lf]<a[j-1].f))*w;
                }   
            }   
            l = e.s;
        }

        int save = 0;
        if (j < a.size())
            save = (x/t+(a[j].f<=(x%t)))*w;

        int mn = -1;
        for (int i = 0; i < j; ++i) {
            if (rel[i] != -1) {
                if (mn == -1 || rel[i] + save < mn) {
                    mn = rel[i] + save;
                }
            }   
        }           
        dp[j] = rel[j] = mn;
        //cout << j << " : " << dp[j] << endl;
    }       
    cout << (int)dp[a.size()] << endl;
}

컴파일 시 표준 에러 (stderr) 메시지

coach.cpp: In function 'int main()':
coach.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < a.size(); ++i)
                     ~~^~~~~~~~~~
coach.cpp:49:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); ++i) {
                     ~~^~~~~~~~~~
coach.cpp:61:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = 1; j <= a.size(); ++j) {
                     ~~^~~~~~~~~~~
coach.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (mem[j-1] != s.size()) {
coach.cpp:91:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (j < a.size())
             ~~^~~~~~~~~~
coach.cpp:59:15: warning: unused variable 'INF' [-Wunused-variable]
     const int INF = 1e9;
               ^~~

• Subtask 1: 0 / 16
• Subtask 2: 0 / 30
• Subtask 3: 0 / 25
• Subtask 4: 0 / 29