oj.uz

Submission #1028229

# Submission time Handle Problem Language Result Execution time Memory
1028229 2024-07-19T15:25:33 Z anango Boarding Passes (BOI22_passes) C++17
60 / 100
 2000 ms 251048 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int INF = 1LL<<62;

void solve() {

    string S; cin >> S;
    int n = S.size();
    vector<int> ar(n); for (int i=0; i<n; i++) ar[i] = (S[i]-'A');
    int G = *max_element(ar.begin(), ar.end()); G++;
    int pref[n+1][G]; //count of character c, before index i
    int suff[n+1][G]; //count of character c, after or equal to index i
    for (int i=0; i<=n; i++) {
        for (int j=0; j<G; j++) {
            pref[i][j] = suff[i][j] = 0;
        }
    }
    for (int i=0; i<n; i++) {
        for (int j=0; j<=G; j++) {
            if (j==ar[i]) {
                pref[i+1][j] = pref[i][j]+1;
            }
            else {
                pref[i+1][j] = pref[i][j];
            }
        }
    }
    
    for (int i=n-1; i>=0; i--) {
        for (int j=0; j<G; j++) {
            if (j==ar[i]) {
                suff[i][j] = suff[i+1][j]+1;
            }
            else {
                suff[i][j] = suff[i+1][j];
            }
        }
    }
    //everyone before L boards from the front, everyone after or equal to it boards from the back. 
    vector<vector<int>> counts(G,vector<int>(G,0));     //counts[i][j] = sum of subsequences of (i,j) before l, and subsequences of (j,i) after L
    //counts[i][j] = sum of pref[k][j] for k<=L and ar[k]=i, and analogous expression for the suffix
    //first, get initial count values (for everyone boarding from the back)
    //and assuming that these are already boarded since the back breaker may not be the same for each group - that was false assumption
    //so precomp counts then ternary search on the breakpoint
    for (int j=0; j<G; j++) {
        for (int k=0; k<n; k++) {
            int i = ar[k];
            //cout << "adding " << i <<" " << j <<" " << k <<" " << j << " " << suff[k][j] << endl;
            counts[i][j] += suff[k+1][j];
        }
    }
    vector<vector<vector<int>>> acounts;
    acounts.push_back(counts);
    for (int L=0; L<n; L++) {

        //counts[i][j] = number of swaps required if i goes after j



        //transfer L to the right
        int cur = ar[L];
        for (int j=0; j<G; j++) {
            int delta = suff[L+1][j];
            int delta2 = pref[L][j];
            counts[cur][j] -= delta-delta2;
        }
        acounts.push_back(counts);
        
        /*cout << "TRANSFERRED TO " << L+1 << endl;
        for (int i=0; i<G; i++) {
            for (int j=0; j<G; j++) {
                cout << i <<" " << j <<" " << counts[i][j] << endl;
            }
        }
        cout << endl;*/
    }
    vector<int> dp;
    dp=vector<int>(1<<G,INF); //dp[mask] = min cost if this mask is at the beginning of the ordering
    dp[0] = 0;
    for (int mask=0; mask<1<<G; mask++) {
        for (int addon=0; addon<G; addon++) {
            if (mask&(1<<addon)) continue;
            int l = 0; int r = n;
            while (l<r) {
                int m1,m2;
                if (r-l>500) {
                    m1 = l+(r-l)/9;
                    m2 = r-(r-l)/9;
                }
                else {
                    m1 = l;
                    m2 = r;
                }
                int am1 = 0;
                for (int j=0; j<G; j++) {
                    if (mask&(1<<j)) {
                        am1+=2*acounts[m1][addon][j];
                    }
                    if (j==addon) {
                        am1+=acounts[m1][addon][j];
                    }
                }
                int am2 = 0;
                for (int j=0; j<G; j++) {
                    if (mask&(1<<j)) {
                        am2+=2*acounts[m2][addon][j];
                    }
                    if (j==addon) {
                        am2+=acounts[m2][addon][j];
                    }
                }
                //cout << "adding " << mask <<" " << addon <<" " << l <<" " << r <<" " << m1 <<" " << m2 <<" " << am1 <<" " << am2 << endl;
                if (am1>am2) {
                    l=m1+1; r=r;
                }
                else if (am1<am2) {
                    l=l; r=m2-1;
                }
                else {
                    l=m1+1; r=m2;
                }
                //cout << mask <<" " << addon <<" " << al <<endl;
            }
            int al = 0;
            for (int j=0; j<G; j++) {
                if (mask&(1<<j)) {
                    al+=2*acounts[l][addon][j];
                }
                if (j==addon) {
                    al+=acounts[l][addon][j];
                }
            }
            dp[mask | (1<<addon)] = min(dp[mask | (1<<addon)],dp[mask]+al);
        }
    }
    int ans=dp[(1<<G)-1];

    int a2 = ans/2;
    cout << a2;
    if (ans%2==1) cout << ".50";
    cout << endl;
}

signed main() {
    int local=0;
    if (local) {
        // for getting input from input.txt
        freopen("input.txt", "r", stdin);
        // for writing output to output.txt
        freopen("output.txt", "w", stdout);
    }
    /*#ifdef ONLINE_JUDGE
    	ios_base::sync_with_stdio(false);
    	cin.tie(NULL);
    #endif*/ //fast IO
    solve();
    
}

Compilation message

passes.cpp: In function 'int main()':
passes.cpp:149:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  149 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
passes.cpp:151:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  151 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
2 Correct 0 ms 348 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
3 Correct 0 ms 348 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
4 Correct 1 ms 344 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
5 Correct 0 ms 348 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
6 Correct 18 ms 9520 KB found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000'
7 Correct 21 ms 10764 KB found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000'
8 Correct 15 ms 11380 KB found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000'
9 Correct 14 ms 11272 KB found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000'

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
2 Correct 0 ms 348 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
3 Correct 1 ms 348 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
4 Correct 1 ms 344 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
5 Correct 1 ms 348 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
6 Correct 0 ms 344 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
7 Correct 1 ms 348 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
8 Correct 1 ms 344 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
9 Correct 0 ms 348 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
10 Correct 1 ms 348 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
11 Correct 1 ms 348 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
12 Correct 1 ms 348 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
13 Correct 1 ms 348 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
14 Correct 0 ms 348 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
15 Correct 1 ms 348 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
16 Correct 1 ms 348 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
17 Correct 0 ms 348 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
2 Correct 0 ms 348 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
3 Correct 1 ms 348 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
4 Correct 1 ms 344 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
5 Correct 1 ms 348 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
6 Correct 0 ms 344 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
7 Correct 1 ms 348 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
8 Correct 1 ms 344 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
9 Correct 0 ms 348 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
10 Correct 1 ms 348 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
11 Correct 1 ms 348 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
12 Correct 1 ms 348 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
13 Correct 1 ms 348 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
14 Correct 0 ms 348 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
15 Correct 1 ms 348 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
16 Correct 1 ms 348 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
17 Correct 0 ms 348 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
18 Correct 0 ms 348 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
19 Correct 0 ms 348 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
20 Correct 1 ms 348 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
21 Correct 1 ms 348 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
22 Correct 1 ms 348 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
23 Correct 0 ms 348 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
24 Correct 1 ms 348 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
25 Correct 1 ms 348 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
26 Correct 0 ms 348 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
27 Correct 1 ms 348 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
28 Correct 1 ms 348 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
29 Correct 0 ms 348 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
30 Correct 0 ms 348 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
31 Correct 1 ms 344 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
32 Correct 1 ms 344 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
33 Correct 0 ms 348 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
34 Correct 1 ms 348 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
35 Correct 17 ms 10116 KB found '12497500.0000000000', expected '12497500.0000000000', error '0.0000000000'
36 Correct 17 ms 10132 KB found '12495000.5000000000', expected '12495000.5000000000', error '0.0000000000'
37 Correct 84 ms 14232 KB found '12223392.0000000000', expected '12223392.0000000000', error '0.0000000000'
38 Correct 69 ms 14232 KB found '2372500.0000000000', expected '2372500.0000000000', error '0.0000000000'
39 Correct 68 ms 14136 KB found '12475017.5000000000', expected '12475017.5000000000', error '0.0000000000'
40 Correct 61 ms 14032 KB found '10655706.0000000000', expected '10655706.0000000000', error '0.0000000000'
41 Correct 62 ms 13716 KB found '11977895.5000000000', expected '11977895.5000000000', error '0.0000000000'
42 Correct 70 ms 13716 KB found '11977865.0000000000', expected '11977865.0000000000', error '0.0000000000'
43 Correct 67 ms 13716 KB found '11977907.5000000000', expected '11977907.5000000000', error '0.0000000000'
44 Correct 69 ms 13720 KB found '11977808.0000000000', expected '11977808.0000000000', error '0.0000000000'
45 Correct 70 ms 13720 KB found '11977791.0000000000', expected '11977791.0000000000', error '0.0000000000'
46 Correct 86 ms 13872 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 344 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
2 Correct 0 ms 348 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
3 Correct 0 ms 348 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
4 Correct 1 ms 344 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
5 Correct 0 ms 348 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
6 Correct 18 ms 9520 KB found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000'
7 Correct 21 ms 10764 KB found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000'
8 Correct 15 ms 11380 KB found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000'
9 Correct 14 ms 11272 KB found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000'
10 Correct 0 ms 344 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
11 Correct 0 ms 348 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
12 Correct 1 ms 348 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
13 Correct 1 ms 344 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
14 Correct 1 ms 348 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
15 Correct 0 ms 344 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
16 Correct 1 ms 348 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
17 Correct 1 ms 344 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
18 Correct 0 ms 348 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
19 Correct 1 ms 348 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
20 Correct 1 ms 348 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
21 Correct 1 ms 348 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
22 Correct 1 ms 348 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
23 Correct 0 ms 348 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
24 Correct 1 ms 348 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
25 Correct 1 ms 348 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
26 Correct 0 ms 348 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
27 Correct 0 ms 348 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
28 Correct 0 ms 348 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
29 Correct 1 ms 348 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
30 Correct 1 ms 348 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
31 Correct 1 ms 348 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
32 Correct 0 ms 348 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
33 Correct 1 ms 348 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
34 Correct 1 ms 348 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
35 Correct 0 ms 348 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
36 Correct 1 ms 348 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
37 Correct 1 ms 348 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
38 Correct 0 ms 348 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
39 Correct 0 ms 348 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
40 Correct 1 ms 344 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
41 Correct 1 ms 344 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
42 Correct 0 ms 348 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
43 Correct 1 ms 348 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
44 Correct 17 ms 10116 KB found '12497500.0000000000', expected '12497500.0000000000', error '0.0000000000'
45 Correct 17 ms 10132 KB found '12495000.5000000000', expected '12495000.5000000000', error '0.0000000000'
46 Correct 84 ms 14232 KB found '12223392.0000000000', expected '12223392.0000000000', error '0.0000000000'
47 Correct 69 ms 14232 KB found '2372500.0000000000', expected '2372500.0000000000', error '0.0000000000'
48 Correct 68 ms 14136 KB found '12475017.5000000000', expected '12475017.5000000000', error '0.0000000000'
49 Correct 61 ms 14032 KB found '10655706.0000000000', expected '10655706.0000000000', error '0.0000000000'
50 Correct 62 ms 13716 KB found '11977895.5000000000', expected '11977895.5000000000', error '0.0000000000'
51 Correct 70 ms 13716 KB found '11977865.0000000000', expected '11977865.0000000000', error '0.0000000000'
52 Correct 67 ms 13716 KB found '11977907.5000000000', expected '11977907.5000000000', error '0.0000000000'
53 Correct 69 ms 13720 KB found '11977808.0000000000', expected '11977808.0000000000', error '0.0000000000'
54 Correct 70 ms 13720 KB found '11977791.0000000000', expected '11977791.0000000000', error '0.0000000000'
55 Correct 86 ms 13872 KB found '11977871.5000000000', expected '11977871.5000000000', error '0.0000000000'
56 Correct 150 ms 852 KB found '7.5000000000', expected '7.5000000000', error '0.0000000000'
57 Correct 309 ms 600 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
58 Correct 0 ms 344 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
59 Correct 0 ms 348 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
60 Correct 0 ms 348 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
61 Correct 0 ms 348 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
62 Correct 0 ms 348 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
63 Correct 12 ms 9488 KB found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000'
64 Correct 14 ms 10708 KB found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000'
65 Correct 14 ms 11272 KB found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000'
66 Correct 14 ms 11276 KB found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000'
67 Correct 0 ms 344 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
68 Correct 1 ms 344 KB found '1225.0000000000', expected '1225.0000000000', error '0.0000000000'
69 Correct 1 ms 348 KB found '1023.0000000000', expected '1023.0000000000', error '0.0000000000'
70 Correct 1 ms 348 KB found '294.0000000000', expected '294.0000000000', error '0.0000000000'
71 Correct 1 ms 348 KB found '1087.0000000000', expected '1087.0000000000', error '0.0000000000'
72 Correct 0 ms 348 KB found '1.5000000000', expected '1.5000000000', error '0.0000000000'
73 Correct 1 ms 348 KB found '703.0000000000', expected '703.0000000000', error '0.0000000000'
74 Correct 1 ms 348 KB found '55.5000000000', expected '55.5000000000', error '0.0000000000'
75 Correct 1 ms 348 KB found '56.0000000000', expected '56.0000000000', error '0.0000000000'
76 Correct 0 ms 348 KB found '45.0000000000', expected '45.0000000000', error '0.0000000000'
77 Correct 1 ms 456 KB found '66.5000000000', expected '66.5000000000', error '0.0000000000'
78 Correct 1 ms 348 KB found '67.0000000000', expected '67.0000000000', error '0.0000000000'
79 Correct 1 ms 348 KB found '66.0000000000', expected '66.0000000000', error '0.0000000000'
80 Correct 1 ms 348 KB found '47.0000000000', expected '47.0000000000', error '0.0000000000'
81 Correct 1 ms 348 KB found '50.0000000000', expected '50.0000000000', error '0.0000000000'
82 Correct 1 ms 344 KB found '49.0000000000', expected '49.0000000000', error '0.0000000000'
83 Correct 1 ms 348 KB found '57.0000000000', expected '57.0000000000', error '0.0000000000'
84 Correct 18 ms 10256 KB found '12497500.0000000000', expected '12497500.0000000000', error '0.0000000000'
85 Correct 16 ms 10136 KB found '12495000.5000000000', expected '12495000.5000000000', error '0.0000000000'
86 Correct 77 ms 14232 KB found '12223392.0000000000', expected '12223392.0000000000', error '0.0000000000'
87 Correct 69 ms 14228 KB found '2372500.0000000000', expected '2372500.0000000000', error '0.0000000000'
88 Correct 65 ms 14228 KB found '12475017.5000000000', expected '12475017.5000000000', error '0.0000000000'
89 Correct 85 ms 14172 KB found '10655706.0000000000', expected '10655706.0000000000', error '0.0000000000'
90 Correct 71 ms 13720 KB found '11977895.5000000000', expected '11977895.5000000000', error '0.0000000000'
91 Correct 71 ms 13716 KB found '11977865.0000000000', expected '11977865.0000000000', error '0.0000000000'
92 Correct 70 ms 13716 KB found '11977907.5000000000', expected '11977907.5000000000', error '0.0000000000'
93 Correct 80 ms 13720 KB found '11977808.0000000000', expected '11977808.0000000000', error '0.0000000000'
94 Correct 93 ms 13800 KB found '11977791.0000000000', expected '11977791.0000000000', error '0.0000000000'
95 Correct 70 ms 13716 KB found '11977871.5000000000', expected '11977871.5000000000', error '0.0000000000'
96 Execution timed out 2025 ms 251048 KB Time limit exceeded
97 Halted 0 ms 0 KB -