oj.uz

Submission #112329

# Submission time Handle Problem Language Result Execution time Memory
112329 2019-05-18T18:33:25 Z updown1 Ancient Books (IOI17_books) C++17
0 / 100
 2 ms 432 KB 
#include "books.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define For(i, a, b) for(int i=a; i<b; i++)
#define ffi For(i, 0, N)
#define ffj For(j, 0, M)
#define ffa ffi ffj
//#define s <<" "<<
#define w cout
#define e "\n"
#define pb push_back
#define mp make_pair
#define a first
#define b second
//#define int ll
const int MAXN = 1000000;
//Global Variables
ll N, out = 0, loc[MAXN], comp[MAXN], at = 0;
///             element ,   element
pair<int, int> rng[MAXN];
///                comp
bool vis[MAXN], del[MAXN];
///   element ,     comp

void go1(int at, int co) {
	if (comp[at] != -1) return;
	rng[co].a = min(rng[co].a, at);
	rng[co].b = max(rng[co].b, at);
	comp[at] = co;
	out += abs(loc[at]-at);
	go1(loc[at], co);
}
void go(int at) {
	if (vis[at]) return;
	vis[at] = true;
	go(loc[at]);
}

ll minimum_walk(vector<int> p, int s) {
	N = p.size();
	ffi {rng[i] = mp(N, -1); comp[i] = -1; loc[i] = p[i];}
	ffi if (comp[i] == -1) {
		go1(i, at);
		at++;
	}
	//For (i, 0, at) w<< cost[i]<<e;
	sort(rng, rng+at);
	int far = -1;
	For (i, 0, at) if (rng[i].b >= s) {
		if (rng[i].a < far) {
			//w<<"deleting"<<e;
			del[comp[rng[i].a]] = true;
        }
		far = max(far, rng[i].b);
	}
	far = N+1;
	for (int i=at-1; i>=0; i--) if (rng[i].a <= s) {
		if (rng[i].b > far) {
			//w<<"deleting"<<e;
			del[comp[rng[i].a]] = true;
        }
		far = min(far, rng[i].a);
	}
	ffi if (loc[i] == i) del[comp[i]] = true;
	far = s;
	For (i, 0, at) if (rng[i].b >= s) {
	    if (!del[comp[rng[i].a]]) out += 2*(rng[i].a - far);
		if (loc[rng[i].b] != rng[i].b) far = max(far, rng[i].b);
		w<< out<<e;
	}
	return out;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB secret mismatch
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB secret mismatch
2 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB secret mismatch
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 432 KB secret mismatch
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB secret mismatch
2 Halted 0 ms 0 KB -