oj.uz

Submission #388249

# Submission time Handle Problem Language Result Execution time Memory
388249 2021-04-10T16:17:08 Z ACmachine Sorting (IOI15_sorting) C++17
74 / 100
 1000 ms 22464 KB 
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)

const double EPS = 1e-9;
const int MOD = 1e9+7;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

void DBG(){cout << "]" << endl;}
template<typename T, typename ...U> void DBG(const T& head, const U... args){ cout << head << "; "; DBG(args...); }
#define dbg(...) cout << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__);
#define chk() cout << "Check at line(" << __LINE__ << ") hit." << endl;

template<class T, unsigned int U>
ostream& operator<<(ostream& out, const array<T, U> &v){out << "[";  REP(i, U) out << v[i] << ", ";  out << "]"; return out;}
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}

template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }

int trivial_sort(int n, vector<int> &positions, vector<int>& P, vector<int> &Q){
    int id = 0;
    REP(i, n){
        REP(j, n){
            if(positions[j] == i){
                if(j != i){
                    swap(positions[i], positions[j]);
                    P[id] = positions[i]; Q[id] = positions[j];
                    id++;
                    break;
                }
            }
        }
    }
    return id;
}
void adapt(vector<int> &init, vector<int> &X, vector<int> &Y, vector<int> &P, vector<int> &Q){
    vector<int> pos(init.size());
    REP(i, init.size()){
        pos[init[i]] = i;
    }
    auto swap2 = [&](int a, int b){
        swap(init[a], init[b]);
        pos[init[a]] = a;
        pos[init[b]] = b;
    };
    REP(i, X.size()){
        swap2(X[i], Y[i]);
        P[i] = pos[P[i]];
        Q[i] = pos[Q[i]];
        swap2(P[i], Q[i]);
    }
}
int findSwapPairs(int n, int S[], int m, int X[], int Y[], int P[], int Q[]) {
    vector<int> nX(m);
    vector<int> nY(m);
    REP(i, m){
        nX[i] = X[i]; nY[i] = Y[i];
    }
	int ans = INF;
	int l = 0;
	int r = m - 1;
	vector<int> init_arr(n);
	vector<int> arr(n);
	REP(i, n) init_arr[i] = S[i];
	vector<int> nP(m);
	vector<int> nQ(m);

	while(l <= r){
	    fill(all(nP), 0);
	    fill(all(nQ), 0);
	    arr = init_arr;
        int mid = (l + r) >> 1;
        REP(i, mid){
            swap(arr[X[i]], arr[Y[i]]);
        }
        int num = trivial_sort(n, arr, nP, nQ);
        if(num <= mid){
            ans = mid;
            r = mid - 1;
        }
        else{
            l = mid + 1;
        }
	}

	//ans = 3;
    fill(all(nP), 0);
    fill(all(nQ), 0);
    arr = init_arr;
    REP(i, ans){
        swap(arr[X[i]], arr[Y[i]]);
    }
	trivial_sort(n, arr, nP, nQ);
	adapt(init_arr, nX, nY, nP, nQ);
	REP(i, ans) {P[i] = nP[i]; Q[i] = nQ[i];}
	return ans;
}

Compilation message

sorting.cpp: In function 'void adapt(std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<int>&)':
sorting.cpp:20:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 | #define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
      |                                        ^
sorting.cpp:22:18: note: in expansion of macro 'FOR'
   22 | #define REP(i,b) FOR(i,0,b,1)
      |                  ^~~
sorting.cpp:76:5: note: in expansion of macro 'REP'
   76 |     REP(i, init.size()){
      |     ^~~
sorting.cpp:20:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 | #define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
      |                                        ^
sorting.cpp:22:18: note: in expansion of macro 'FOR'
   22 | #define REP(i,b) FOR(i,0,b,1)
      |                  ^~~
sorting.cpp:84:5: note: in expansion of macro 'REP'
   84 |     REP(i, X.size()){
      |     ^~~

Subtask #1
8.0 / 8.0

# 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 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 0 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 0 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 1 ms 204 KB Output is correct
2 Correct 1 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 0 ms 204 KB Output is correct

Subtask #4
18.0 / 18.0

# 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 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 0 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 1 ms 204 KB Output is correct
14 Correct 1 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 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 5 ms 700 KB Output is correct
22 Correct 5 ms 716 KB Output is correct
23 Correct 6 ms 780 KB Output is correct
24 Correct 5 ms 716 KB Output is correct
25 Correct 8 ms 716 KB Output is correct
26 Correct 7 ms 716 KB Output is correct
27 Correct 6 ms 756 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 424 KB Output is correct
2 Correct 47 ms 440 KB Output is correct
3 Correct 43 ms 452 KB Output is correct
4 Correct 55 ms 460 KB Output is correct
5 Correct 61 ms 460 KB Output is correct
6 Correct 57 ms 460 KB Output is correct
7 Correct 56 ms 460 KB Output is correct
8 Correct 47 ms 580 KB Output is correct
9 Correct 43 ms 516 KB Output is correct
10 Correct 46 ms 500 KB Output is correct
11 Correct 48 ms 532 KB Output is correct
12 Correct 55 ms 580 KB Output is correct
13 Correct 49 ms 500 KB Output is correct
14 Correct 67 ms 460 KB Output is correct

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 424 KB Output is correct
2 Correct 47 ms 440 KB Output is correct
3 Correct 43 ms 452 KB Output is correct
4 Correct 55 ms 460 KB Output is correct
5 Correct 61 ms 460 KB Output is correct
6 Correct 57 ms 460 KB Output is correct
7 Correct 56 ms 460 KB Output is correct
8 Correct 47 ms 580 KB Output is correct
9 Correct 43 ms 516 KB Output is correct
10 Correct 46 ms 500 KB Output is correct
11 Correct 48 ms 532 KB Output is correct
12 Correct 55 ms 580 KB Output is correct
13 Correct 49 ms 500 KB Output is correct
14 Correct 67 ms 460 KB Output is correct
15 Execution timed out 1088 ms 22464 KB Time limit exceeded
16 Halted 0 ms 0 KB -