oj.uz

Submission #654599

# Submission time Handle Problem Language Result Execution time Memory
654599 2022-10-31T20:51:49 Z Lobo Boarding Passes (BOI22_passes) C++17
55 / 100
 215 ms 160968 KB 
#include<bits/stdc++.h>
using namespace std;
const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

const int maxn = 1e4+10;
const int maxg = 11;

int n, a[maxn];
dbl pf[(1<<maxg)][maxn], dp[(1<<maxg)];
vector<int> pos[maxg];

void solve() {
    string s; cin >> s;
    n = s.size();
    vector<char> cc;
    for(auto x : s) cc.pb(x);
    sort(all(cc));
    cc.erase(unique(all(cc)),cc.end());
    for(int i = 1; i <= n; i++) {
        a[i] = lower_bound(all(cc),s[i-1])-cc.begin();
        pos[a[i]].pb(i);
    }
    int g = cc.size();

    for(int mask = 1; mask < (1<<g); mask++) {
        pf[mask][0] = 0;
        for(int i = 1; i <= n; i++) {
            pf[mask][i] = pf[mask][i-1];
            if((1<<a[i])&mask) pf[mask][i]++;
        }

        dp[mask] = inf;
        for(int i = 0; i < g; i++) {
            if(((1<<i)&mask) == 0) continue;
            int mask1 = mask-(1<<i);
            dbl ans1 = dp[mask1];
            for(int j = 1; j <= pos[i].size(); j++) {
                int x = pos[i][j-1];
                ans1+= min(pf[mask1][x]+((dbl) j-1)/2, pf[mask1][n]-pf[mask1][x]+((dbl) pos[i].size()-j)/2);
                // cout << " " << min(pf[mask1][x]+((dbl) j-1)/2, pf[mask1][n]-pf[mask1][x]+((dbl) pos[i].size()-j)/2) << endl;
            }
            dp[mask] = min(dp[mask],ans1);
            // cout << mask << " " << i << " = " << ans1 << " " << pf[mask1][1] << endl;
        }
    }
    cout.setf(ios::fixed);
    cout.precision(10);
    cout << dp[(1<<g)-1] << endl;
}

int32_t main() {
    ios::sync_with_stdio(false); cin.tie(0);

    // freopen("in.in", "r", stdin);
    // freopen("out.out", "w", stdout);
    int tt = 1;
    // cin >> tt;
    while(tt--) {
        solve();
    }

}

Compilation message

passes.cpp: In function 'void solve()':
passes.cpp:46:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |             for(int j = 1; j <= pos[i].size(); j++) {
      |                            ~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
2 Correct 1 ms 328 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
3 Correct 1 ms 328 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
4 Correct 1 ms 340 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
5 Correct 1 ms 340 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
6 Incorrect 3 ms 852 KB 1st numbers differ - expected: '772893586.0000000000', found: '12522510.0000000000', error = '0.9837978860'
7 Halted 0 ms 0 KB -

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
2 Correct 1 ms 340 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
3 Correct 1 ms 980 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
4 Correct 1 ms 980 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
5 Correct 1 ms 980 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
6 Correct 1 ms 852 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
7 Correct 1 ms 980 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
8 Correct 1 ms 596 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
9 Correct 1 ms 852 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
10 Correct 1 ms 852 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
11 Correct 1 ms 852 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
12 Correct 1 ms 852 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
13 Correct 1 ms 852 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
14 Correct 1 ms 852 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
15 Correct 1 ms 852 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
16 Correct 1 ms 852 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
17 Correct 1 ms 852 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
2 Correct 1 ms 340 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
3 Correct 1 ms 980 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
4 Correct 1 ms 980 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
5 Correct 1 ms 980 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
6 Correct 1 ms 852 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
7 Correct 1 ms 980 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
8 Correct 1 ms 596 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
9 Correct 1 ms 852 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
10 Correct 1 ms 852 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
11 Correct 1 ms 852 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
12 Correct 1 ms 852 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
13 Correct 1 ms 852 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
14 Correct 1 ms 852 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
15 Correct 1 ms 852 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
16 Correct 1 ms 852 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
17 Correct 1 ms 852 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
18 Correct 0 ms 340 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
19 Correct 0 ms 340 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
20 Correct 1 ms 980 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
21 Correct 1 ms 980 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
22 Correct 1 ms 980 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
23 Correct 1 ms 852 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
24 Correct 1 ms 980 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
25 Correct 1 ms 596 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
26 Correct 1 ms 852 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
27 Correct 1 ms 852 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
28 Correct 1 ms 852 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
29 Correct 1 ms 852 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
30 Correct 1 ms 852 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
31 Correct 1 ms 852 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
32 Correct 1 ms 852 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
33 Correct 1 ms 852 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
34 Correct 1 ms 852 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
35 Correct 1 ms 724 KB found '12497500.0000000000', expected '12497500.0000000000', error '0.0000000000'
36 Correct 1 ms 724 KB found '12495000.5000000000', expected '12495000.5000000000', error '0.0000000000'
37 Correct 204 ms 160836 KB found '12223392.0000000000', expected '12223392.0000000000', error '0.0000000000'
38 Correct 164 ms 160920 KB found '2372500.0000000000', expected '2372500.0000000000', error '0.0000000000'
39 Correct 151 ms 160968 KB found '12475017.5000000000', expected '12475017.5000000000', error '0.0000000000'
40 Correct 163 ms 160780 KB found '10655706.0000000000', expected '10655706.0000000000', error '0.0000000000'
41 Correct 191 ms 160840 KB found '11977895.5000000000', expected '11977895.5000000000', error '0.0000000000'
42 Correct 174 ms 160784 KB found '11977865.0000000000', expected '11977865.0000000000', error '0.0000000000'
43 Correct 183 ms 160964 KB found '11977907.5000000000', expected '11977907.5000000000', error '0.0000000000'
44 Correct 190 ms 160860 KB found '11977808.0000000000', expected '11977808.0000000000', error '0.0000000000'
45 Correct 215 ms 160860 KB found '11977791.0000000000', expected '11977791.0000000000', error '0.0000000000'
46 Correct 189 ms 160852 KB found '11977871.5000000000', expected '11977871.5000000000', error '0.0000000000'

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
2 Correct 1 ms 328 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
3 Correct 1 ms 328 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
4 Correct 1 ms 340 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
5 Correct 1 ms 340 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
6 Incorrect 3 ms 852 KB 1st numbers differ - expected: '772893586.0000000000', found: '12522510.0000000000', error = '0.9837978860'
7 Halted 0 ms 0 KB -