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Submission #408827

# Submission time Handle Problem Language Result Execution time Memory
408827 2021-05-19T17:25:02 Z MDario Sorting (IOI15_sorting) C++11
100 / 100
 172 ms 22516 KB 
#include "sorting.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define F first
#define S second
int n, s[200001], m, x[600001], y[600001];
bool f(ll xf){
    int s1[200001];
    for(int i=0; i<n; i++){
        s1[i]=s[i];
    }
    int c=0;
    for(int i=0; i<xf; i++){
        swap(s1[x[i]], s1[y[i]]);
    }
    for(int i=0; i<n; i++){
        while(s1[i]!=i){
            c++;
            swap(s1[i], s1[s1[i]]);
        }
    }
    return (c<=xf);
}
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    n=N;
    m=M;
    bool b=1;
    for(int i=0; i<n; i++){
        s[i]=S[i];
        if(S[i]!=i)b=0;
    }
    if(b)return 0;
    for(int i=0; i<n; i++){
        x[i]=X[i];
        y[i]=Y[i];
    }
    int l=0, r=n+1, mid=0;
    while(l+1<r){
        mid=(l+r)/2;
        if(f(mid)){
            r=mid;
        }
        else l=mid;
    }
    int c=0;
    l++;
//    cout << l << "\n";
    int s1[n], p[n];
    for(int i=0; i<n; i++){
        s1[i]=i;
        p[i]=i;
    }
    for(int i=0; i<l; i++){
        swap(S[x[i]], S[y[i]]);
        swap(s1[x[i]], s1[y[i]]);
        swap(p[s1[x[i]]], p[s1[y[i]]]);
    }
    for(int i=0; i<n; i++){
        while(S[i]!=i){
            swap(s1[p[x[c]]], s1[p[y[c]]]);
            swap(p[s1[p[x[c]]]], p[s1[p[y[c]]]]);
            P[c]=s1[i];
            Q[c]=s1[S[i]];
            //cout << P[c] << " " << Q[c] << "\n";
//            for(int t=0; t<n; t++){
//                cout << s1[t] << " ";
//            }
//            cout << "\n";
            c++;
            swap(S[i], S[S[i]]);
        }
    }
    for(int i=c; i<l; i++){
        P[i]=0;
        Q[i]=0;
    }
	return l;
}

Subtask #1
8.0 / 8.0

# 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 1100 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 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 1 ms 204 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 2 ms 1100 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 972 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 1100 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 972 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 1 ms 204 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 2 ms 1100 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 972 KB Output is correct
15 Correct 1 ms 1100 KB Output is correct
16 Correct 1 ms 1100 KB Output is correct
17 Correct 1 ms 1100 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 2 ms 1100 KB Output is correct
22 Correct 3 ms 1228 KB Output is correct
23 Correct 2 ms 1228 KB Output is correct
24 Correct 2 ms 1228 KB Output is correct
25 Correct 2 ms 1228 KB Output is correct
26 Correct 2 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1100 KB Output is correct
2 Correct 2 ms 1228 KB Output is correct
3 Correct 2 ms 1228 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 1228 KB Output is correct
6 Correct 2 ms 1228 KB Output is correct
7 Correct 2 ms 1228 KB Output is correct
8 Correct 2 ms 1232 KB Output is correct
9 Correct 2 ms 1228 KB Output is correct
10 Correct 3 ms 1228 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct
12 Correct 2 ms 1228 KB Output is correct
13 Correct 2 ms 1208 KB Output is correct
14 Correct 2 ms 1228 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1100 KB Output is correct
2 Correct 2 ms 1228 KB Output is correct
3 Correct 2 ms 1228 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 1228 KB Output is correct
6 Correct 2 ms 1228 KB Output is correct
7 Correct 2 ms 1228 KB Output is correct
8 Correct 2 ms 1232 KB Output is correct
9 Correct 2 ms 1228 KB Output is correct
10 Correct 3 ms 1228 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct
12 Correct 2 ms 1228 KB Output is correct
13 Correct 2 ms 1208 KB Output is correct
14 Correct 2 ms 1228 KB Output is correct
15 Correct 153 ms 19148 KB Output is correct
16 Correct 141 ms 19524 KB Output is correct
17 Correct 168 ms 21116 KB Output is correct
18 Correct 44 ms 14028 KB Output is correct
19 Correct 110 ms 19836 KB Output is correct
20 Correct 121 ms 20620 KB Output is correct
21 Correct 122 ms 20548 KB Output is correct
22 Correct 118 ms 15936 KB Output is correct
23 Correct 148 ms 21444 KB Output is correct
24 Correct 160 ms 21444 KB Output is correct
25 Correct 164 ms 21512 KB Output is correct
26 Correct 121 ms 20428 KB Output is correct
27 Correct 105 ms 19704 KB Output is correct
28 Correct 154 ms 21088 KB Output is correct
29 Correct 155 ms 21060 KB Output is correct
30 Correct 81 ms 19172 KB Output is correct
31 Correct 157 ms 21552 KB Output is correct
32 Correct 147 ms 20608 KB Output is correct
33 Correct 163 ms 21572 KB Output is correct
34 Correct 150 ms 21296 KB Output is correct
35 Correct 113 ms 19632 KB Output is correct
36 Correct 47 ms 18180 KB Output is correct
37 Correct 172 ms 22516 KB Output is correct
38 Correct 162 ms 21440 KB Output is correct
39 Correct 168 ms 21960 KB Output is correct