oj.uz

Submission #994790

# Submission time Handle Problem Language Result Execution time Memory
994790 2024-06-08T05:46:46 Z guagua0407 Editor (BOI15_edi) C++17
35 / 100
 33 ms 3420 KB 
//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

const int mxn=3e5+5;
int e[mxn];

int main() {_
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>e[i];
        //cout<<e[i]<<' ';
    }
    //cout<<'\n';
    if(n<=5000){
        vector<bool> active(n+1);
        vector<int> prv(n+1);
        set<pair<int,int>> S;
        S.insert({-1,0});
        for(int i=1;i<=n;i++){
            if(e[i]>=0){
                active[i]=true;
                S.insert({i,e[i]});
            }
            else{
                active[i]=true;
                int x;
                for(int j=i-1;j>=0;j--){
                    if(active[j] and (e[j]>=0 or e[j]>e[i])){
                        x=j;
                        break;
                    }
                }
                //cout<<i<<' '<<x<<'\n';
                prv[i]=x;
                while(e[x]<0){
                    active[x]=!active[x];
                    x=prv[x];
                }
                active[x]=!active[x];
                if(active[x]){
                    S.insert({x,e[x]});
                }
                else{
                    S.erase({x,e[x]});
                }
            }
            cout<<(*S.rbegin()).s<<'\n';
        }
        return 0;
    }
    vector<int> ans;
    ans.push_back(0);
    for(int i=1;i<=n;i++){
        if(e[i]>=0) ans.push_back(e[i]);
        else ans.pop_back();
        cout<<ans.back()<<'\n';
    }
    return 0;
}
//maybe its multiset not set
//yeeorz
//laborz

Compilation message

edi.cpp: In function 'void setIO(std::string)':
edi.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
edi.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
edi.cpp: In function 'int main()':
edi.cpp:52:40: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   52 |                     active[x]=!active[x];
      |                                        ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 15 ms 536 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 3420 KB Output is correct
2 Correct 33 ms 3416 KB Output is correct

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 16 ms 2264 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 15 ms 536 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 33 ms 3420 KB Output is correct
11 Correct 33 ms 3416 KB Output is correct
12 Incorrect 16 ms 2264 KB Output isn't correct
13 Halted 0 ms 0 KB -