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Submission #600177

# Submission time Handle Problem Language Result Execution time Memory
600177 2022-07-20T13:55:20 Z PiejanVDC Sorting (IOI15_sorting) C++17
54 / 100
 1000 ms 536 KB 
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;

int findSwapPairs(int n, int s[], int m, int X[], int Y[], int P[], int Q[]) {
    auto sorted = [&] (vector<int>&v) -> bool {
        for(int i = 0 ; i < n ; i++)
            if(v[i] != i)
                return 0;
        return 1;
    };
    for(int T = 1 ; T <= m ; T++) {
        //cout << "T : " << T << '\n';
        vector<int>c(n);
        for(int i = 0 ; i < n ; i++) c[i]= i;
        for(int i = 0 ; i < T ; i++)
            swap(c[X[i]], c[Y[i]]);
        vector<int>go(n, -1);
        for(int i = 0 ; i < n ; i++) {
            //assert(go[c[i]] == -1);
            go[c[i]] = i;
        }
        vector<int>v(n);
        auto S = [&] (int W) {
            for(int i = 0 ; i < n ; i++)
                if(v[i] == W)
                    return i;
            //assert(0);
        };
        for(int i = 0 ; i < n ; i++) v[i] = s[i];
        int cnt = 0;
        for(int i = 0 ; i < T ; i++) {
            if(sorted(v))
                return cnt;
            cnt++;
            swap(v[X[i]], v[Y[i]]);
            swap(go[X[i]], go[Y[i]]);
            int j;
            for(j = 0 ; j < n ; j++) {
                if(go[j] != v[j]) {
                    int p = S(go[j]);
                    P[cnt-1] = p;
                    Q[cnt-1] = j;
                    swap(v[p], v[j]);
                    break;
                }
            }
            /*cout << "    " << i << '\n';
            cout << "    ";
            for(auto z : v)
                cout << z << ' ';
            cout << '\n';*/
            if(j == n)
                P[cnt-1] = 0, Q[cnt-1] = 0;
            // do the swappings
            // look for first element not correct in go
        }
        if(sorted(v))
            return cnt;
    }
   assert(0);
   return 0;
}

Compilation message

sorting.cpp: In lambda function:
sorting.cpp:29:9: warning: control reaches end of non-void function [-Wreturn-type]
   29 |         };
      |         ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 232 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 232 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 232 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 30 ms 436 KB Output is correct
22 Correct 35 ms 516 KB Output is correct
23 Correct 30 ms 468 KB Output is correct
24 Correct 23 ms 428 KB Output is correct
25 Correct 6 ms 468 KB Output is correct
26 Correct 16 ms 468 KB Output is correct
27 Correct 43 ms 536 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 428 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 428 KB Time limit exceeded
2 Halted 0 ms 0 KB -