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답안 #584466

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
584466 2022-06-27T12:25:41 Z FatihSolak OGLEDALA (COI15_ogledala) C++17
19 / 100
 4000 ms 417128 KB 
#include <bits/stdc++.h>
#define N 100005
using namespace std;
long long a[N],b[N];
long long len[N];
map<pair<long long,long long>,long long> rem;
long long val(long long curlen,long long target){
    if(curlen <= target)return curlen == target;
    if(rem.count({curlen,target}))
        return rem[{curlen,target}];
    return rem[{curlen,target}] = val((curlen-1)/2,target) + val(curlen/2,target);
    
}
long long get(long long st,long long curlen,long long target,long long idx){
    if(curlen == target)return st + (target - 1)/2;
    long long nwlen = (curlen - 1)/2;
    if(val(nwlen,target) >= idx){
        return get(st,nwlen,target,idx);
    }
    idx -= val(nwlen,target);
    nwlen = (curlen)/2;
    return get(st + (curlen + 1)/2,nwlen,target,idx);
}
vector<pair<long long,long long>> get_proper(vector<pair<long long,long long>> a){
    vector<pair<long long,long long>> ret;
    if(!is_sorted(a.begin(),a.end()))
        sort(a.begin(),a.end());
    for(int i = 0;i<a.size();i++){
        if(i + 1 != a.size() && a[i].first == a[i+1].first){
            a[i+1].second += a[i].second;
            continue;
        }
        ret.push_back(a[i]);
    }
    return ret;
}
void solve(){
    long long m,n,q;
    cin >> m >> n >> q;
    map<long long,vector<pair<long long,long long>>> mp; 
    set<long long> points;
    for(int i = 1;i<=n;i++){
        cin >> a[i];
    }
    a[n+1] = m + 1;
    for(int i = 0;i<=n;i++){
        len[i] = a[i+1] - a[i] - 1;
        
        vector<pair<long long,long long>> nums = {{len[i],1}};
        while(nums.back().first > 0){
            vector<pair<long long,long long>> nw;
            for(auto u:nums){ 
                mp[u.first].push_back({i,u.second});
                nw.push_back({(u.first-1)/2,u.second});
                nw.push_back({u.first/2,u.second});
            }
            nums = get_proper(nw);
        }
        /*
        map<long long,long long> cnt;
        cnt[len[i]] = 1;
        set<long long> nums = {len[i]};
        while(*nums.rbegin() > 0){
            long long nowlen = *nums.rbegin();
            nums.erase(nowlen);
            points.insert(nowlen);
            mp[nowlen].push_back({i,cnt[nowlen]});
            nums.insert((nowlen-1)/2);
            nums.insert(nowlen/2);
            cnt[(nowlen-1)/2] += cnt[nowlen];
            cnt[nowlen/2] += cnt[nowlen];
        }*/
    }
    for(auto &u:mp){
        points.insert(u.first);
        u.second = get_proper(u.second);
        reverse(u.second.begin(),u.second.end());
    }
    long long nowgo = n;
    for(int i = 1;i<=q;i++){
        cin >> b[i];
        if(b[i] <= n){
            cout << a[b[i]] << "\n";
            continue;
        }
        while(nowgo + mp[*points.rbegin()].back().second < b[i]){
            nowgo += mp[*points.rbegin()].back().second;
            mp[*points.rbegin()].pop_back();
            if(mp[*points.rbegin()].empty()){
                points.erase(*points.rbegin());
            }
        }   
        b[i] -= nowgo;
        cout << get( a[mp[*points.rbegin()].back().first] + 1,len[mp[*points.rbegin()].back().first],*points.rbegin(),b[i]) << "\n";
    }

}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    #ifdef Local
        freopen("in.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
    #ifdef Local
        cout << endl << fixed << setprecision(2) << 1000.0*clock()/CLOCKS_PER_SEC << " milliseconds.";
    #endif
}

Compilation message

ogledala.cpp: In function 'std::vector<std::pair<long long int, long long int> > get_proper(std::vector<std::pair<long long int, long long int> >)':
ogledala.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i = 0;i<a.size();i++){
      |                   ~^~~~~~~~~
ogledala.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         if(i + 1 != a.size() && a[i].first == a[i+1].first){
      |            ~~~~~~^~~~~~~~~~~

Subtask #1
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 36 ms 2912 KB Output is correct
4 Correct 27 ms 2912 KB Output is correct
5 Correct 78 ms 9720 KB Output is correct
6 Correct 63 ms 11452 KB Output is correct

Subtask #2
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 1364 KB Output is correct
2 Correct 15 ms 1564 KB Output is correct
3 Correct 3420 ms 314072 KB Output is correct
4 Correct 3603 ms 335604 KB Output is correct
5 Execution timed out 4062 ms 417128 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 59.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2131 ms 98532 KB Output is correct
2 Correct 2092 ms 99172 KB Output is correct
3 Execution timed out 4045 ms 235348 KB Time limit exceeded
4 Halted 0 ms 0 KB -