oj.uz

Submission #851500

# Submission time Handle Problem Language Result Execution time Memory
851500 2023-09-20T02:27:34 Z owoovo Passport (JOI23_passport) C++14
6 / 100
 90 ms 3600 KB 
#include<bits/stdc++.h>
using namespace std;
int bit[200010],n,qu;
void mo(int pos,int x){
    while(pos<=n){
        bit[pos]=max(bit[pos],x);
        pos+=pos&(-pos);
    }
    return;
}
int q(int pos){
    int ans=0;
    while(pos){
        ans=max(ans,bit[pos]);
        pos-=pos&(-pos);
    }
    return ans;
}
int main(){
    //ios::sync_with_stdio(0);
    //cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++){
        int a,b;
        cin>>a>>b;
        mo(i,b);
    }
    cin>>qu;
    int x;
    cin>>x;

    int ans=0,now=1;
    while(now!=n){
        ans++;
        int x=q(now);
        if(x==now){
            cout<<"-1\n";
            return 0;
        }
        now=q(now);
    }
    cout<<ans<<"\n";
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 81 ms 3480 KB Output is correct
5 Correct 83 ms 3480 KB Output is correct
6 Correct 90 ms 3600 KB Output is correct
7 Correct 81 ms 2900 KB Output is correct
8 Correct 58 ms 2404 KB Output is correct

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 81 ms 3480 KB Output is correct
5 Correct 83 ms 3480 KB Output is correct
6 Correct 90 ms 3600 KB Output is correct
7 Correct 81 ms 2900 KB Output is correct
8 Correct 58 ms 2404 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Incorrect 1 ms 348 KB Output isn't correct
11 Halted 0 ms 0 KB -