Submission #674054

#	Time	Username	Problem	Language	Result	Execution time	Memory
674054		AmirElarbi	Pinball (JOI14_pinball)	C++14	51 / 100	1076 ms	3540 KiB

pinball

#include <bits/stdc++.h>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#define ii pair<int,int>
#define pll pair<ll,ll>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF 1e18
#define eps 1e-7
#define eps1 1e-2
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MAX_A 2e5+5
using namespace std;
int MOD = 1e9+7;
const int nax = 1e5+5;
const int nax2 = 200+5;
typedef complex<int> Point;
using cd = complex<double>;
const double PI = acos(-1);
ll m,n;
ll a[nax], b[nax], c[nax], d[nax], dp[nax], dp2[nax];
ll srch2(int j){
    if(b[j] == n) return d[j];
    if(j == -1) return INF;
    if(dp2[j] != -1) return dp2[j];
    dp2[j] = INF;
    for (int i = j-1; i >= 0;--i)
    {    
        if(c[i] <= b[j] && b[i] > b[j]){
            dp2[j] = min(dp2[j], srch2(i)+d[j]);
        }
    }
    return dp2[j];
}
ll srch(int j){
    if(b[j] == n) return d[j];
    if(j == m) return INF;
    if(dp[j] != -1) return dp[j];
    dp[j] = INF;
    dp[j] = min(dp[j], srch2(j));
    for (int i = j+1; i < m; ++i)
    {
        if(a[i] <= c[j] && b[i] > b[j]){
            dp[j] = min(dp[j], srch(i)+d[j]);
        }
    }
    return dp[j];
}
int main(){ 
    optimise;
    cin >> m >> n;
    for (int i = 0; i < m; ++i)
    {
        cin >> a[i] >> b[i] >> c[i] >> d[i];
    }
    c[m] = 1;
    memset(dp,-1, sizeof dp);
    memset(dp2,-1, sizeof dp2);
    ll cur = INF;
    for (int i = 0; i < m; ++i)
    {
        if(a[i] == 1){
            cur = min(cur,srch(i));
        }
    }
    if(cur == INF) cout << -1 << endl;
    else cout << cur << endl;
}

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 0 / 49