Submission #2643381

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#include <bits/stdc++.h>
using namespace std;

#define NDEBUG
#ifdef DEBUG
#include "../cout11.h"
#undef NDEBUG
#endif
#include <cassert>

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll,ll> llll;
typedef pair<double,double> dd;

typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<ll> vll;

#define sz(a)  int((a).size())
#define pb  push_back
#define FOR(var,from,to) for(int var=(from);var<=(to);++var)
#define rep(var,n)  for(int var=0;var<(n);++var)
#define rep1(var,n)  for(int var=1;var<=(n);++var)
#define repC2(vari,varj,n)  for(int vari=0;vari<(n)-1;++vari)for(int varj=vari+1;varj<(n);++varj)
#define ALL(c)  (c).begin(),(c).end()
#define RALL(c)  (c).rbegin(),(c).rend()
#define tr(i,c)  for(auto i=(c).begin(); i!=(c).end(); ++i)
#define found(s,e)  ((s).find(e)!=(s).end())
#define mset(arr,val)  memset(arr,val,sizeof(arr))
#define mid(x,y) ((x)+((y)-(x))/2)
#define IN(x,a,b) ((a)<=(x)&&(x)<=(b))

int sub(string& s, int ch){
    int L = s.size();
    vi w(L);
    rep(i,L) w[i] = s[i] - 'a';

    int ans = 0;
    {
        int cnt = 0;
        rep(i,L) if (w[i]==ch) ++cnt;
        if (cnt == L) return 0;
    }
    while (L > 1) {
        // cerr << w << endl;
        ++ans;
        // vi t(L-1, -1);
        int cnt = 0;
        rep(i,L-1){
            if (w[i]==ch || w[i+1]==ch) {
                w[i] = ch;
                ++cnt;
            }
        }
        if (cnt == L-1) return ans;
        // s = t; --L;
        w.pop_back(); --L;
    }
    return s.size()-1;
}
int solve(string& s) {
    int L = s.size();
    int best = L-1;
    rep(i,26) best = min(best, sub(s,i));
    return best;
}

int main() {
    string s; cin >> s;
    cout << solve(s) << endl;
    return 0;
}

Submission Info

Submission Time
Task A - Shrinking
User naoya_t
Language C++14 (GCC 5.4.1)
Score 300
Code Size 1906 Byte
Status
Exec Time 1 ms
Memory 256 KB

Test Cases

Set Name Score / Max Score Test Cases
Sample 0 / 0 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt
All 300 / 300 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt
Case Name Status Exec Time Memory
0_00.txt 1 ms 256 KB
0_01.txt 1 ms 256 KB
0_02.txt 1 ms 256 KB
0_03.txt 1 ms 256 KB
1_00.txt 1 ms 256 KB
1_01.txt 1 ms 256 KB
1_02.txt 1 ms 256 KB
1_03.txt 1 ms 256 KB
1_04.txt 1 ms 256 KB
1_05.txt 1 ms 256 KB
1_06.txt 1 ms 256 KB
1_07.txt 1 ms 256 KB
1_08.txt 1 ms 256 KB
1_09.txt 1 ms 256 KB