oj.uz

Submission #796156

# Submission time Handle Problem Language Result Execution time Memory
796156 2023-07-28T07:11:10 Z 이동현(#10071) Security Guard (JOI23_guard) C++17
12 / 100
 57 ms 8148 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#define int long long
using namespace std;

const int NS = (int)2e5 + 4;
int n, m, q;
int l[NS], r[NS], a[NS], srt[NS], chk[NS];

int fdl(int x){
    return (x == l[x] ? x : l[x] = fdl(l[x]));
}

int fdr(int x){
    return (x == r[x] ? x : r[x] = fdr(r[x]));
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    iota(l, l + NS, 0);
    iota(r, r + NS, 0);

    cin >> n >> m >> q;
    int ans = 0;
    for(int i = 1; i <= n; ++i){
        cin >> a[i];
        if(i > 1){
            ans += min(a[i - 1], a[i]);
        }
    }

    iota(srt, srt + NS, 0);
    sort(srt + 1, srt + n + 1, [&](int x, int y){return a[x] > a[y];});

    int gr = 1;
    for(int i = 1; i <= n; ++i){
        int now = srt[i];

        chk[now] = 1;
        if(now > 1 && now < n) ++gr;
        if(chk[now - 1]){
            --gr;
        }
        if(chk[now + 1]){
            --gr;
        }

        if(i == n || a[srt[i]] != a[srt[i + 1]]){
            // cout << i << ' ' << now << ' ' << ans << ' ' << gr << endl;
            ans += gr;
        }
    }

    cout << ans << '\n';
    
    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 19 ms 8104 KB Output is correct
3 Correct 26 ms 8128 KB Output is correct
4 Correct 20 ms 8084 KB Output is correct
5 Correct 24 ms 8020 KB Output is correct
6 Correct 20 ms 8132 KB Output is correct
7 Correct 22 ms 8148 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 19 ms 8104 KB Output is correct
3 Correct 26 ms 8128 KB Output is correct
4 Correct 20 ms 8084 KB Output is correct
5 Correct 24 ms 8020 KB Output is correct
6 Correct 20 ms 8132 KB Output is correct
7 Correct 22 ms 8148 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Incorrect 57 ms 8056 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 19 ms 8104 KB Output is correct
3 Correct 26 ms 8128 KB Output is correct
4 Correct 20 ms 8084 KB Output is correct
5 Correct 24 ms 8020 KB Output is correct
6 Correct 20 ms 8132 KB Output is correct
7 Correct 22 ms 8148 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Incorrect 57 ms 8056 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 19 ms 8104 KB Output is correct
3 Correct 26 ms 8128 KB Output is correct
4 Correct 20 ms 8084 KB Output is correct
5 Correct 24 ms 8020 KB Output is correct
6 Correct 20 ms 8132 KB Output is correct
7 Correct 22 ms 8148 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Incorrect 57 ms 8056 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Incorrect 2 ms 4948 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Incorrect 2 ms 4948 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 19 ms 8104 KB Output is correct
3 Correct 26 ms 8128 KB Output is correct
4 Correct 20 ms 8084 KB Output is correct
5 Correct 24 ms 8020 KB Output is correct
6 Correct 20 ms 8132 KB Output is correct
7 Correct 22 ms 8148 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Incorrect 57 ms 8056 KB Output isn't correct
11 Halted 0 ms 0 KB -