oj.uz

Submission #785429

# Submission time Handle Problem Language Result Execution time Memory
785429 2023-07-17T09:05:11 Z fatemetmhr Sorting (IOI15_sorting) C++17
56 / 100
 60 ms 10360 KB 
//  ~ Be Name Khoda ~  //

#include "sorting.h"
#include <bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops,Ofast")

using namespace std;

typedef long long ll;

#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second

const int maxn  =  1e6   + 10;
const int maxn5 =  6000  + 10;
const int maxnt =  1.2e6 + 10;
const int maxn3 =  1e3   + 10;
const int mod   =  1e9   + 7;
const ll  inf   =  1e18;


int n, cmp, sz, pt, a[maxn5], b[maxn5], x[maxn5], y[maxn5];
int s1[maxn5], s2[maxn5];
bool mark[maxn5];

void sset(int a, int b){
	for(int i = sz - 1; i > pt; i--){
		if(a > b)
			swap(a, b);
		if(a == b || x[i] == y[i])
			continue;
		if((a == x[i] && b == y[i]) || (a != x[i] && a != y[i] && b != x[i] && b != y[i]))
			continue;
		if(a == x[i])
			a = y[i];
		else if(a == y[i])
			a = x[i];
		else if(b == x[i])
			b = y[i];
		else if(b == y[i])
			b = x[i];
	}
	s1[pt] = a;
	s2[pt] = b;
	pt++;
}

int rt;

void dfs(int v){
	mark[v] = true;
	if(!mark[b[v]]){
		//cout << "its " << v << ' ' << b[v] << endl;
		sset(rt, b[v]);
		dfs(b[v]);
	}
}

bool check(int m){
	//cout << "hereeeeee " << m << endl;
	sz = m;
	memset(mark, false, sizeof mark);
	for(int i = 0; i < n; i++){
		b[i] = a[i];
	}
	for(int i = 0; i < m; i++)
		swap(b[x[i]], b[y[i]]);
	pt = 0;
	for(int i = 0; i < n; i++) if(!mark[i]){
		rt = i;
		dfs(i);
	}
	//cout << "in " << m << ' ' << pt << endl;
	return pt <= m;
}



int findSwapPairs(int N, int A[], int m, int X[], int Y[], int p[], int q[]) {
	n = N;
	for(int i = 0; i < m; i++){
		x[i] = X[i];
		y[i] = Y[i];
		if(x[i] > y[i])
			swap(x[i], y[i]);
	}
	for(int i = 0; i < n; i++)
		a[i] = A[i];
	bool re = true;
	for(int i = 1; i < n; i++)
		re &= (a[i] > a[i - 1]);
	if(re)
		return 0;
    int lo = -1, hi = m;
    while(hi - lo > 1){
    	int mid = (hi + lo) >> 1;
    	if(check(mid))
    		hi = mid;
    	else
    		lo = mid;
    }
    check(hi);
	for(int i = 0; i < pt; i++){
		p[i] = s1[i];
		q[i] = s2[i];
	}
	for(int i = pt; i < hi; i++)
		p[i] = q[i] = 0;
    return hi;
}

Compilation message

sorting.cpp: In function 'void sset(int, int)':
sorting.cpp:31:22: warning: declaration of 'b' shadows a global declaration [-Wshadow]
   31 | void sset(int a, int b){
      |                  ~~~~^
sorting.cpp:27:31: note: shadowed declaration is here
   27 | int n, cmp, sz, pt, a[maxn5], b[maxn5], x[maxn5], y[maxn5];
      |                               ^
sorting.cpp:31:15: warning: declaration of 'a' shadows a global declaration [-Wshadow]
   31 | void sset(int a, int b){
      |           ~~~~^
sorting.cpp:27:21: note: shadowed declaration is here
   27 | int n, cmp, sz, pt, a[maxn5], b[maxn5], x[maxn5], y[maxn5];
      |                     ^

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 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 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 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 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 0 ms 212 KB Output is correct
2 Correct 1 ms 340 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 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 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 0 ms 212 KB Output is correct
14 Correct 1 ms 340 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 340 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Incorrect 20 ms 516 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 452 KB Output is correct
2 Correct 39 ms 444 KB Output is correct
3 Correct 60 ms 460 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 18 ms 448 KB Output is correct
6 Correct 11 ms 340 KB Output is correct
7 Correct 19 ms 468 KB Output is correct
8 Correct 37 ms 448 KB Output is correct
9 Correct 36 ms 448 KB Output is correct
10 Correct 46 ms 460 KB Output is correct
11 Correct 31 ms 468 KB Output is correct
12 Correct 17 ms 464 KB Output is correct
13 Correct 39 ms 448 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 452 KB Output is correct
2 Correct 39 ms 444 KB Output is correct
3 Correct 60 ms 460 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 18 ms 448 KB Output is correct
6 Correct 11 ms 340 KB Output is correct
7 Correct 19 ms 468 KB Output is correct
8 Correct 37 ms 448 KB Output is correct
9 Correct 36 ms 448 KB Output is correct
10 Correct 46 ms 460 KB Output is correct
11 Correct 31 ms 468 KB Output is correct
12 Correct 17 ms 464 KB Output is correct
13 Correct 39 ms 448 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Runtime error 41 ms 10360 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -