oj.uz

답안 #968257

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
968257 2024-04-23T08:59:23 Z Darren0724 Line Town (CCO23_day1problem3) C++17
6 / 25
 42 ms 14080 KB 
#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define ll long long 
#define LCBorz ios_base::sync_with_stdio(false);cin.tie(0);
const int N=1000005;
const int mod=1e6+3;
const ll INF=1e18;
int32_t main(){
    LCBorz;
    int n;cin>>n;
    vector<ll> v(n+2),pre(n+2),suf(n+2);
    for(int i=1;i<=n;i++){
        cin>>v[i];
        assert(abs(v[i])==1);
    }
    ll cnt=0;
    vector<int> st;
    int lz=0,zero=0;
    for(int i=1;i<=n;i++){
        if(v[i]==0){
            lz^=1;
            zero++;
        }
        else {
            cnt+=zero;
            if((v[i]==1)^lz){
                if(st.size()&&(st.back()+i)%2==1){
                    cnt+=(i-st.back());
                    st.pop_back();
                } 
                else{
                    st.push_back(i);
                }
            }
        }
        if(st.size()==0){
            pre[i]=cnt;
        }
        else{
            pre[i]=INF;
        }
    }
    st.clear();
    cnt=0;
    lz=0;
    zero=0;
    for(int i=n;i>=1;i--){
        if(v[i]==0){
            lz^=1;
            zero++;
        }
        else {
            cnt+=zero;
            if((v[i]==-1)^lz){
                if(st.size()&&(st.back()+i)%2==1){
                    cnt+=(st.back()-i);
                    st.pop_back();
                } 
                else{
                    st.push_back(i);
                }
            }
        }
        if(st.size()==0){
            suf[i]=cnt;
        }
        else{
            suf[i]=INF;
        }
    }
    ll ans=INF;
    for(int i=0;i<=n;i++){
        ans=min(ans,pre[i]+suf[i+1]);
        //cout<<pre[i]<<' '<<suf[i+1]<<endl;
    }
    if(ans==INF){
        cout<<-1<<endl;
    }
    else{
        cout<<ans<<endl;
    }
    
    return 0;
}
/*
20
1 1 1 1 1 1 1 1 1 1 1 1 -1 1 1 -1 1 -1 -1 1
4
*/

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 444 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 444 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 34 ms 13416 KB Output is correct
16 Correct 34 ms 13396 KB Output is correct
17 Correct 35 ms 13248 KB Output is correct
18 Correct 42 ms 13404 KB Output is correct
19 Correct 34 ms 13576 KB Output is correct
20 Correct 31 ms 14048 KB Output is correct
21 Correct 27 ms 14048 KB Output is correct
22 Correct 28 ms 14080 KB Output is correct
23 Correct 27 ms 13920 KB Output is correct
24 Correct 27 ms 14036 KB Output is correct

Subtask #3
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 444 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Runtime error 1 ms 604 KB Execution killed with signal 6
15 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 444 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 34 ms 13416 KB Output is correct
16 Correct 34 ms 13396 KB Output is correct
17 Correct 35 ms 13248 KB Output is correct
18 Correct 42 ms 13404 KB Output is correct
19 Correct 34 ms 13576 KB Output is correct
20 Correct 31 ms 14048 KB Output is correct
21 Correct 27 ms 14048 KB Output is correct
22 Correct 28 ms 14080 KB Output is correct
23 Correct 27 ms 13920 KB Output is correct
24 Correct 27 ms 14036 KB Output is correct
25 Runtime error 1 ms 604 KB Execution killed with signal 6
26 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 604 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #6
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 604 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #7
0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 444 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Runtime error 1 ms 604 KB Execution killed with signal 6
15 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 444 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 34 ms 13416 KB Output is correct
16 Correct 34 ms 13396 KB Output is correct
17 Correct 35 ms 13248 KB Output is correct
18 Correct 42 ms 13404 KB Output is correct
19 Correct 34 ms 13576 KB Output is correct
20 Correct 31 ms 14048 KB Output is correct
21 Correct 27 ms 14048 KB Output is correct
22 Correct 28 ms 14080 KB Output is correct
23 Correct 27 ms 13920 KB Output is correct
24 Correct 27 ms 14036 KB Output is correct
25 Runtime error 1 ms 604 KB Execution killed with signal 6
26 Halted 0 ms 0 KB -