oj.uz

Submission #432618

# Submission time Handle Problem Language Result Execution time Memory
432618 2021-06-18T11:39:05 Z 2qbingxuan Sorting (IOI15_sorting) C++17
74 / 100
 1000 ms 11520 KB 
#include "sorting.h"
#include <bits/stdc++.h>
#ifdef local
#define debug(a...) qqbx(#a, a)
#define pary(a...) danb(#a, a)
#define safe std::cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
template <typename ...T> void qqbx(const char *s, T ...a) {
    int cnt = sizeof...(T);
    ((std::cerr << "\e[1;32m(" << s << ") = ("), ..., (std::cerr << a << (--cnt ? ", " : ")\e[0m\n")));
}
template <typename T> void danb(const char *s, T L, T R) {
    std::cerr << "\e[1;32m[ " << s << " ] = [ ";
    for (int f = 0; L != R; ++L)
        std::cerr << (f++ ? ", " : "") << *L;
    std::cerr << " ]\e[0m\n";
}
#else
#define debug(...) ((void)0)
#define pary(...) ((void)0)
#define safe ((void)0)
#endif // local
#define all(v) begin(v),end(v)

using namespace std;

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    if (is_sorted(S, S+N)) return 0;
    vector<pair<int,int>> best(M, pair<int,int>(-1, -1));
    for (int R = 1; R <= N; R++) {
        vector<int> targ(N);
        for (int i = 0; i < N; i++) targ[i] = i;
        for (int i = R-1; i >= 0; i--)
            swap(targ[X[i]], targ[Y[i]]);

        vector<int> s(S, S+N);
        vector<int> pos(N);
        for (int i = 0; i < N; i++)
            pos[s[i]] = i;
        vector<pair<int,int>> ans;
        for (int i = 0, it = 0; i < R; i++) {
            {
                int a = X[i], b = Y[i];
                swap(targ[a], targ[b]);
                swap(pos[s[a]], pos[s[b]]);
                swap(s[a], s[b]);
            }
            {
                while (it < N && pos[it] == pos[targ[pos[it]]]) ++it;
                if (it == N) {
                    ans.emplace_back(0, 0);
                } else {
                    ;
                    int a = pos[it];
                    int b = pos[targ[a]];
                    swap(pos[s[a]], pos[s[b]]);
                    swap(s[a], s[b]);
                    ans.emplace_back(a, b);
                }
            }
        }
        // pary(all(s));
        if (is_sorted(all(s))) {
            if (best.size() > ans.size())
                best = ans;
        }
    }
    for (size_t i = 0; i < best.size(); i++)
        tie(P[i], Q[i]) = best[i];
    return best.size();
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:69:21: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   69 |     return best.size();
      |            ~~~~~~~~~^~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 6 ms 460 KB Output is correct
22 Correct 6 ms 564 KB Output is correct
23 Correct 6 ms 588 KB Output is correct
24 Correct 6 ms 612 KB Output is correct
25 Correct 5 ms 588 KB Output is correct
26 Correct 6 ms 588 KB Output is correct
27 Correct 6 ms 588 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 420 KB Output is correct
2 Correct 78 ms 432 KB Output is correct
3 Correct 71 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 91 ms 452 KB Output is correct
6 Correct 84 ms 420 KB Output is correct
7 Correct 86 ms 452 KB Output is correct
8 Correct 75 ms 424 KB Output is correct
9 Correct 80 ms 420 KB Output is correct
10 Correct 78 ms 432 KB Output is correct
11 Correct 96 ms 428 KB Output is correct
12 Correct 94 ms 436 KB Output is correct
13 Correct 91 ms 428 KB Output is correct
14 Correct 48 ms 420 KB Output is correct

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 420 KB Output is correct
2 Correct 78 ms 432 KB Output is correct
3 Correct 71 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 91 ms 452 KB Output is correct
6 Correct 84 ms 420 KB Output is correct
7 Correct 86 ms 452 KB Output is correct
8 Correct 75 ms 424 KB Output is correct
9 Correct 80 ms 420 KB Output is correct
10 Correct 78 ms 432 KB Output is correct
11 Correct 96 ms 428 KB Output is correct
12 Correct 94 ms 436 KB Output is correct
13 Correct 91 ms 428 KB Output is correct
14 Correct 48 ms 420 KB Output is correct
15 Execution timed out 1088 ms 11520 KB Time limit exceeded
16 Halted 0 ms 0 KB -