Submission #226802

#	Time	Username	Problem	Language	Result	Execution time	Memory
226802		stefdasca	Pinball (JOI14_pinball)	C++14	100 / 100	313 ms	15992 KiB

pinball

#include<bits/stdc++.h>
#define god dimasi5eks
#pragma GCC optimize("O3")
#define fi first
#define se second
#define pb push_back
#define pf push_front

// #define fisier 1

using namespace std;

typedef long long ll;

const int mod = 1000000007;
const double dancila = 3.14159265359; // PI 
const double eps = 1e-9;


int n, m;
int a[100002], b[100002], c[100002], d[100002];
bool lc[100002], rc[100002];

ll aint[400002], dp[2][100002];
void update(int nod, int st, int dr, int poz, ll val)
{
	if(st == dr)
	{
   aint[nod] = min(aint[nod], val);
   return;
	}
	int mid = (st + dr) / 2;
	if(poz <= mid)
   update(nod << 1, st, mid, poz, val);
	else
   update(nod << 1|1, mid+1, dr, poz, val);
	aint[nod] = min(aint[nod << 1], aint[nod << 1|1]);
}
ll query(int nod, int st, int dr, int L, int R)
{
	if(dr < L || st > R)
   return (1LL<<60);
	if(L <= st && dr <= R)
   return aint[nod];
	int mid = (st + dr) / 2;
	return min(query(nod << 1, st, mid, L, R), query(nod << 1|1, mid+1, dr, L, R));
}
int main()
{

    #ifdef fisier
        ifstream f("input.in");
        ofstream g("output.out");
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

	cin >> m >> n;
	set<int> dist;
	for(int i = 1; i <= m; ++i)
	{
   cin >> a[i] >> b[i] >> c[i] >> d[i];
   if(a[i] == 1)
   	lc[i] = 1;
   if(b[i] == n)
   	rc[i] = 1;
   dist.insert(c[i]);
	}
	
	map<int, int> tpoz;
    int p = 0;
    for (int i : dist)
        tpoz[i] = ++p;
    n = 0;
    for(int i = 1; i <= m; ++i)
    {
        a[i] = (*tpoz.lower_bound(a[i])).se;
        auto it = tpoz.upper_bound(b[i]);
        it--;
        b[i] = (*it).se;
        c[i] = tpoz[c[i]];
        n = max(n, b[i]);
    }
    for(int i = 0; i <= 1; ++i)
    {
   for(int nod = 1; nod <= 4*n; ++nod)
   	aint[nod] = (1LL<<60);
   for(int j = 1; j <= m; ++j)
   {
   	if((i == 0 && lc[j]) || (i == 1 && rc[j]))
      dp[i][j] = d[j];
   	else
      dp[i][j] = min((1LL<<60), query(1, 1, n, a[j], b[j]) + d[j]);
   	update(1, 1, n, c[j], dp[i][j]);
   }
	}
	
	ll ans = (1LL<<60);
	for(int i = 1; i <= m; ++i)
   ans = min(ans, dp[0][i] + dp[1][i] - d[i]);
	if(ans == (1LL<<60))
   cout << -1;
	else
   cout << ans;
    return 0;
}

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