oj.uz

Submission #318144

# Submission time Handle Problem Language Result Execution time Memory
318144 2020-10-31T14:10:34 Z tigicha Sorting (IOI15_sorting) C++14
0 / 100
 2 ms 492 KB 
#include <bits/stdc++.h>
#include "sorting.h"
using namespace std;
int k, l, r, ans, m, b[500005], a[500005];
vector<pair<int, int> > v;
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    l=0;
	r=M;
	ans=-1;
    while(l<=r){
        m=(l+r)/2;
        for(int i=0; i<N; i++)
        b[i]=S[i];
        for(int i=0; i<m; i++)
        swap(b[X[i]], b[Y[i]]);
        for(int i=0; i<N; i++)
        a[b[i]]=i;
        v.clear();
        for(int i=0; i<N; i++){
            if(b[i]==i) continue;
            v.push_back(make_pair(i, b[i]));
            swap(b[i], b[a[i]]);
            swap(a[i], a[b[a[i]]]);   
        }
        if(v.size()>m) l=m+1;
        else{
            for(int i=0; i<N; i++){
                b[i]=S[i];
                a[b[i]]=i;
            }
            for(int i=0; i<M; i++){
                swap(a[b[X[i]]], a[b[Y[i]]]);
                swap(b[X[i]], b[Y[i]]);
                if(i<v.size()){
                    P[i]=a[v[i].first];
                    Q[i]=a[v[i].second];
                    swap(a[v[i].first], a[v[i].second]);
                    swap(a[a[v[i].first]], a[a[v[i].second]]);                    
                }
                else{
				P[i]=0;
				Q[i]=0;
				}
            }
            r=m-1;
            ans=m;
        }
    }
    return ans;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:25:20: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   25 |         if(v.size()>m) l=m+1;
      |            ~~~~~~~~^~
sorting.cpp:34:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |                 if(i<v.size()){
      |                    ~^~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Incorrect 0 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Incorrect 0 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Incorrect 0 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 492 KB Output isn't correct
2 Halted 0 ms 0 KB -