oj.uz

Submission #256385

# Submission time Handle Problem Language Result Execution time Memory
256385 2020-08-02T15:55:12 Z shayan_p Vim (BOI13_vim) C++14
75.6111 / 100
 2000 ms 524292 KB 
// And you curse yourself for things you never done

#include<bits/stdc++.h>

#define F first
#define S second
#define PB push_back
#define sz(s) int((s).size())
#define bit(n,k) (((n)>>(k))&1)

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

const int maxn = 70010, mod = 1e9 + 7, inf = 1e9 + 10;

int nxt[maxn][10], lst[10];

struct Hash{
    int operator() (const pii &p)const{
	return hash<ll>()( 1ll * p.F * maxn + p.S );
    }
};

unordered_map<pii, int, Hash> dp;
vector<int> poses;

int solve(int i, int j){
    if(i >= sz(poses))
	return 0;
    if(dp.count({i, j}))
	return dp[{i, j}];
    int ans = inf;
    if(j >= poses[i])
	ans =  j - poses[i] + solve( upper_bound(poses.begin(), poses.end(), j) - poses.begin(), poses[i] );
    if(nxt[ poses[i] ][8] + 10 < j)
	return dp[{i, j}] = ans;
    int pt = lower_bound(nxt[j], nxt[j] + 10, poses[i]) - nxt[j];
    for(int w = 8 ; w >= 0 && nxt[j][w] != j && w >= pt-1; w--)
	ans = min(ans, 2 + solve(i, nxt[j][w]));
    return dp[{i, j}] = ans;
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie();

    dp.reserve(1<<17);
    dp.max_load_factor(0.25);
    
    int n;
    cin >> n;
    string _s, s;
    cin >> _s;
    int ans = 0;
    for(int i = 0; i < n; i++){
	if(_s[i] == 'e')
	    ans+= 2;
	if(_s[i] == 'e' && _s[i + 1] != 'e')
	    poses.PB(sz(s));
	if(_s[i] != 'e')
	    s+= _s[i];	
    }
    memset(lst, -1, sizeof lst);
    memset(nxt, -1, sizeof nxt);
    n = sz(s);
    for(int i = n-1; i >= 0; i--){
	for(int j = 0; j < 9; j++)
	    nxt[i][j] = (lst[j] == -1 ? i : lst[j]);
	sort(nxt[i], nxt[i] + 9);
	nxt[i][9] = inf;
	int id = (s[i] - 'a') - (s[i] > 'e');
	lst[id] = i;
    }
    ans+= solve(0, 0);
    return cout << ans << "\n", 0;
}

Subtask #1
48.6111111111 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5248 KB Output is correct
2 Correct 6 ms 4992 KB Output is correct
3 Correct 4 ms 4608 KB Output is correct
4 Correct 6 ms 4864 KB Output is correct
5 Correct 11 ms 5632 KB Output is correct
6 Correct 7 ms 4992 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 2 ms 4096 KB Output is correct
9 Correct 3 ms 4096 KB Output is correct
10 Correct 3 ms 4096 KB Output is correct
11 Correct 3 ms 4096 KB Output is correct
12 Correct 3 ms 4096 KB Output is correct
13 Correct 8 ms 5248 KB Output is correct
14 Correct 6 ms 4992 KB Output is correct
15 Correct 5 ms 4608 KB Output is correct
16 Correct 6 ms 4864 KB Output is correct
17 Correct 7 ms 4864 KB Output is correct
18 Correct 6 ms 4736 KB Output is correct
19 Incorrect 7 ms 5120 KB Output isn't correct
20 Correct 7 ms 5120 KB Output is correct
21 Correct 6 ms 4864 KB Output is correct
22 Correct 12 ms 5632 KB Output is correct
23 Correct 7 ms 4992 KB Output is correct
24 Correct 8 ms 4992 KB Output is correct
25 Correct 5 ms 4608 KB Output is correct
26 Correct 5 ms 4480 KB Output is correct
27 Correct 7 ms 4736 KB Output is correct
28 Correct 7 ms 4992 KB Output is correct
29 Correct 9 ms 5120 KB Output is correct
30 Correct 6 ms 4864 KB Output is correct
31 Correct 6 ms 4736 KB Output is correct
32 Correct 6 ms 4608 KB Output is correct
33 Correct 4 ms 4480 KB Output is correct
34 Correct 6 ms 4736 KB Output is correct
35 Correct 7 ms 4992 KB Output is correct
36 Correct 7 ms 5120 KB Output is correct

Subtask #2
9.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 23020 KB Output is correct
2 Correct 61 ms 23120 KB Output is correct
3 Correct 36 ms 12884 KB Output is correct
4 Correct 54 ms 23120 KB Output is correct
5 Correct 172 ms 45624 KB Output is correct
6 Correct 723 ms 170280 KB Output is correct
7 Correct 158 ms 44832 KB Output is correct
8 Correct 75 ms 23124 KB Output is correct
9 Correct 61 ms 23124 KB Output is correct
10 Incorrect 80 ms 24144 KB Output isn't correct

Subtask #3
18.0 / 40.0

# Verdict Execution time Memory Grader output
1 Runtime error 1990 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Correct 360 ms 90980 KB Output is correct
3 Correct 514 ms 170568 KB Output is correct
4 Runtime error 1623 ms 524288 KB Execution killed with signal 9 (could be triggered by violating memory limits)
5 Runtime error 1853 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
6 Incorrect 624 ms 175632 KB Output isn't correct
7 Runtime error 1800 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
8 Execution timed out 2121 ms 381036 KB Time limit exceeded
9 Runtime error 1652 ms 524288 KB Execution killed with signal 9 (could be triggered by violating memory limits)
10 Correct 1002 ms 342804 KB Output is correct
11 Runtime error 1666 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
12 Runtime error 2053 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
13 Correct 577 ms 170792 KB Output is correct
14 Correct 625 ms 170920 KB Output is correct
15 Correct 704 ms 180756 KB Output is correct
16 Runtime error 1760 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
17 Runtime error 1982 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
18 Correct 516 ms 170564 KB Output is correct
19 Correct 363 ms 90920 KB Output is correct
20 Correct 619 ms 170852 KB Output is correct