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답안 #491608

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
491608 2021-12-03T13:24:04 Z NaimSS Vim (BOI13_vim) C++14
0 / 100
 10 ms 11468 KB 
#include <bits/stdc++.h>
#define ld long double
#define endl "\n"
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
#define mp(a,b) make_pair(a,b)
#define ms(v,x) memset(v,x,sizeof(v))
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define per(i, a, b) for(int i = b-1; i>=a ; i--)
#define trav(a, x) for(auto& a : x)
#define allin(a , x) for(auto a : x)
#define Unique(v) sort(all(v));v.erase(unique(all(v)),v.end());
#define sz(v) ((int)v.size())
using namespace std;
typedef vector<int> vi;
#define y1 abacaba
//#define left oooooopss
#define db(x) cerr << #x <<" == "<<x << endl;
#define db2(x,y) cerr<<#x <<" == "<<x<<", "<<#y<<" == "<<y<<endl;
#define db3(x,y,z) cerr << #x<<" == "<<x<<", "<<#y<<" == "<<y<<", "<<#z<<" == "<<z<<endl;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
std::mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down
inline ll mod(ll n, ll m ){ ll ret = n%m; if(ret < 0) ret += m; return ret; }
ll gcd(ll a, ll b){return (b == 0LL ? a : gcd(b, a%b));}
ll exp(ll b,ll e,ll m){
  b%=m;
  ll ans = 1;
  for (; e; b = b * b % m, e /= 2)
      if (e & 1) ans = ans * b % m;
  return ans;
}

// debug:
void dbg_out() { cerr << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T){ 
  cerr << ' ' << H; 
  dbg_out(T...); 
}
#ifdef LOCAL
#define dbg(...) cerr<<"(" << #__VA_ARGS__<<"):" , dbg_out(__VA_ARGS__) , cerr << endl
#else
#define dbg(...) 
#endif
//
const int N = 70100;
int pre[N][20];
int nxt[N][20];

int32_t main(){
    fastio;
	int n;
	cin >> n;
	string s;
	cin >> s;
	rep(i,0,n){
		rep(j,0,20){
			pre[i][j] = (!i ? 0 : pre[i-1][j]);
		}
		pre[i][s[i]-'a']++;
	}
	per(i,0,n){
		rep(j,0,20){
			nxt[i][j] = (i==n-1 ? n : nxt[i+1][j]);
		}
		nxt[i][s[i]-'a'] = i;
	}
	ll res=0;
	int cur = 0;

	int tote=pre[n-1][4],foie=0;

	while(tote > foie){

		int prx = cur;
		while(prx < n && s[prx]!='e')prx++;
		int fim = prx;

		while(fim +1 < n && s[fim + 1] == 'e')fim++;

		int tam = fim - prx+1;
		res += tam + tam;
		foie += tam;
		// custo de ir de cur pra fim + 1
		
		int mn = 1e9;
		for(int j=0;j<10;j++){
			int pos = nxt[fim+1][j];
			if(pos < n){
				mn = min(mn,pre[pos][j] - pre[cur][j]);
			}
		}
		res+=mn * 2;
		cur = fim + 1;
	}
	cout<<res<<endl;

	
    // math -> gcd it all
    // Did u check N=1? Did you switch N,M?
}

Subtask #1
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 332 KB Output isn't correct
2 Incorrect 1 ms 332 KB Output isn't correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Incorrect 1 ms 332 KB Output isn't correct
5 Incorrect 1 ms 332 KB Output isn't correct
6 Incorrect 1 ms 328 KB Output isn't correct
7 Incorrect 1 ms 332 KB Output isn't correct
8 Incorrect 1 ms 324 KB Output isn't correct
9 Incorrect 0 ms 332 KB Output isn't correct
10 Incorrect 0 ms 332 KB Output isn't correct
11 Incorrect 0 ms 332 KB Output isn't correct
12 Incorrect 1 ms 332 KB Output isn't correct
13 Incorrect 0 ms 332 KB Output isn't correct
14 Incorrect 1 ms 332 KB Output isn't correct
15 Incorrect 0 ms 332 KB Output isn't correct
16 Incorrect 0 ms 332 KB Output isn't correct
17 Incorrect 0 ms 332 KB Output isn't correct
18 Incorrect 1 ms 332 KB Output isn't correct
19 Incorrect 0 ms 332 KB Output isn't correct
20 Incorrect 0 ms 332 KB Output isn't correct
21 Incorrect 1 ms 332 KB Output isn't correct
22 Incorrect 0 ms 332 KB Output isn't correct
23 Incorrect 1 ms 332 KB Output isn't correct
24 Incorrect 1 ms 332 KB Output isn't correct
25 Incorrect 1 ms 328 KB Output isn't correct
26 Incorrect 1 ms 332 KB Output isn't correct
27 Incorrect 1 ms 332 KB Output isn't correct
28 Incorrect 0 ms 332 KB Output isn't correct
29 Incorrect 0 ms 332 KB Output isn't correct
30 Incorrect 0 ms 332 KB Output isn't correct
31 Incorrect 1 ms 332 KB Output isn't correct
32 Incorrect 0 ms 332 KB Output isn't correct
33 Incorrect 1 ms 332 KB Output isn't correct
34 Incorrect 0 ms 332 KB Output isn't correct
35 Incorrect 1 ms 332 KB Output isn't correct
36 Incorrect 1 ms 332 KB Output isn't correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 1100 KB Output isn't correct
2 Incorrect 1 ms 1100 KB Output isn't correct
3 Incorrect 1 ms 716 KB Output isn't correct
4 Incorrect 2 ms 1100 KB Output isn't correct
5 Incorrect 1 ms 1100 KB Output isn't correct
6 Incorrect 1 ms 1104 KB Output isn't correct
7 Incorrect 1 ms 1100 KB Output isn't correct
8 Incorrect 1 ms 1100 KB Output isn't correct
9 Incorrect 1 ms 1100 KB Output isn't correct
10 Incorrect 1 ms 1100 KB Output isn't correct

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 8 ms 9932 KB Output isn't correct
2 Incorrect 8 ms 9676 KB Output isn't correct
3 Incorrect 8 ms 9932 KB Output isn't correct
4 Incorrect 9 ms 11468 KB Output isn't correct
5 Incorrect 8 ms 11468 KB Output isn't correct
6 Incorrect 10 ms 10060 KB Output isn't correct
7 Incorrect 10 ms 10452 KB Output isn't correct
8 Incorrect 10 ms 10652 KB Output isn't correct
9 Incorrect 8 ms 10608 KB Output isn't correct
10 Incorrect 8 ms 10640 KB Output isn't correct
11 Incorrect 8 ms 11468 KB Output isn't correct
12 Incorrect 8 ms 11468 KB Output isn't correct
13 Incorrect 9 ms 11084 KB Output isn't correct
14 Incorrect 8 ms 11340 KB Output isn't correct
15 Incorrect 9 ms 11340 KB Output isn't correct
16 Incorrect 8 ms 9812 KB Output isn't correct
17 Incorrect 9 ms 9932 KB Output isn't correct
18 Incorrect 9 ms 9932 KB Output isn't correct
19 Incorrect 7 ms 9676 KB Output isn't correct
20 Incorrect 7 ms 9804 KB Output isn't correct