oj.uz

Submission #64003

# Submission time Handle Problem Language Result Execution time Memory
64003 2018-08-03T08:13:39 Z 노영훈(#1868) Ranklist Sorting (BOI07_sorting) C++11
10 / 100
 1000 ms 132096 KB 
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef pair<int, vi> piv;
typedef pair<vi, pii> pvp;
typedef long long ll;

int n, A[1010];

map<vi, int> D;
map<vi, pvp> prv;

void dijk(vi &st){
    priority_queue<piv, vector<piv>, greater<piv>> Q;
    Q.push({0, st}), D[st]=0;
    while(!Q.empty()){
        vi v; int d; tie(d,v)=Q.top(); Q.pop();
        if(D[v]!=d) continue;

        // for(int x:v) cout<<x<<' ';
        // cout<<": "<<d<<'\n';

        for(int i=1; i<=n; i++){
            vi now=v;
            for(int j=i+1; j<=n; j++){
                swap(now[j-2], now[j-1]);
                if(D.find(now)!=D.end() && D[now]<=d+i+j) continue;
                D[now]=d+i+j; Q.push({D[now], now});
                prv[now]={v, {i,j}};
            }
        }
        for(int i=1; i<=n; i++){
            vi now=v;
            for(int j=1; j<i; j++){
                swap(now[j-1], now[j]);
                if(D.find(now)!=D.end() && D[now]<=d+i+j) continue;
                D[now]=d+i+j; Q.push({D[now], now});
                prv[now]={v, {i,j}};
            }
        }
    }
    vi ed; for(int i=n-1; i>=0; i--) ed.push_back(i);
    stack<pii> stk;

    while(ed!=st){
        stk.push({prv[ed].second});
        ed=prv[ed].first;
    }
    cout<<stk.size()<<'\n';
    while(!stk.empty()){ int a,b; tie(a,b)=stk.top(); stk.pop(); cout<<a<<' '<<b<<'\n'; }
}

int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    cin>>n;
    for(int i=1; i<=n; i++) cin>>A[i];
    vector<int> X; for(int i=1; i<=n; i++) X.push_back(A[i]);
    sort(X.begin(), X.end());
    for(int i=1; i<=n; i++) A[i]=lower_bound(X.begin(), X.end(), A[i])-X.begin();
    X.clear();

    for(int i=1; i<=n; i++) X.push_back(A[i]);
    dijk(X);
    return 0;
}

Subtask #1
10.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 2040 KB Output is correct
2 Execution timed out 1082 ms 35768 KB Time limit exceeded
3 Execution timed out 1079 ms 53684 KB Time limit exceeded
4 Execution timed out 1053 ms 132096 KB Time limit exceeded
5 Execution timed out 1059 ms 132096 KB Time limit exceeded
6 Execution timed out 1095 ms 132096 KB Time limit exceeded
7 Execution timed out 1086 ms 132096 KB Time limit exceeded
8 Execution timed out 1040 ms 132096 KB Time limit exceeded
9 Execution timed out 1110 ms 132096 KB Time limit exceeded
10 Execution timed out 1107 ms 132096 KB Time limit exceeded