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Submission #318154

# Submission time Handle Problem Language Result Execution time Memory
318154 2020-10-31T14:24:52 Z tigicha Sorting (IOI15_sorting) C++14
100 / 100
 386 ms 21460 KB 
#include <bits/stdc++.h>
#include "sorting.h"
using namespace std;
int 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(b[a[v[i].first]], b[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
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 360 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 360 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 360 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 3 ms 620 KB Output is correct
22 Correct 3 ms 652 KB Output is correct
23 Correct 3 ms 748 KB Output is correct
24 Correct 2 ms 748 KB Output is correct
25 Correct 3 ms 748 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 620 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 492 KB Output is correct
2 Correct 2 ms 620 KB Output is correct
3 Correct 2 ms 492 KB Output is correct
4 Correct 2 ms 492 KB Output is correct
5 Correct 2 ms 492 KB Output is correct
6 Correct 2 ms 492 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 2 ms 492 KB Output is correct
10 Correct 2 ms 672 KB Output is correct
11 Correct 2 ms 620 KB Output is correct
12 Correct 2 ms 492 KB Output is correct
13 Correct 2 ms 620 KB Output is correct
14 Correct 2 ms 492 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 492 KB Output is correct
2 Correct 2 ms 620 KB Output is correct
3 Correct 2 ms 492 KB Output is correct
4 Correct 2 ms 492 KB Output is correct
5 Correct 2 ms 492 KB Output is correct
6 Correct 2 ms 492 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 2 ms 492 KB Output is correct
9 Correct 2 ms 492 KB Output is correct
10 Correct 2 ms 672 KB Output is correct
11 Correct 2 ms 620 KB Output is correct
12 Correct 2 ms 492 KB Output is correct
13 Correct 2 ms 620 KB Output is correct
14 Correct 2 ms 492 KB Output is correct
15 Correct 219 ms 19540 KB Output is correct
16 Correct 291 ms 20052 KB Output is correct
17 Correct 316 ms 20788 KB Output is correct
18 Correct 351 ms 17752 KB Output is correct
19 Correct 275 ms 19668 KB Output is correct
20 Correct 292 ms 20180 KB Output is correct
21 Correct 258 ms 20180 KB Output is correct
22 Correct 214 ms 19412 KB Output is correct
23 Correct 250 ms 21332 KB Output is correct
24 Correct 349 ms 21076 KB Output is correct
25 Correct 386 ms 20944 KB Output is correct
26 Correct 308 ms 19692 KB Output is correct
27 Correct 302 ms 19032 KB Output is correct
28 Correct 304 ms 20820 KB Output is correct
29 Correct 351 ms 20568 KB Output is correct
30 Correct 279 ms 18268 KB Output is correct
31 Correct 379 ms 20692 KB Output is correct
32 Correct 248 ms 20820 KB Output is correct
33 Correct 366 ms 21076 KB Output is correct
34 Correct 277 ms 21076 KB Output is correct
35 Correct 270 ms 19668 KB Output is correct
36 Correct 167 ms 17252 KB Output is correct
37 Correct 352 ms 21460 KB Output is correct
38 Correct 341 ms 20820 KB Output is correct
39 Correct 343 ms 20948 KB Output is correct