oj.uz

Submission #791835

# Submission time Handle Problem Language Result Execution time Memory
791835 2023-07-24T10:43:08 Z 이동현(#10049) Nestabilnost (COI23_nestabilnost) C++17
19 / 100
 1500 ms 38660 KB 
#include <bits/stdc++.h>
#define int long long
#define mi(x, y) (x = min(x, y))
#define ma(x, y) (x = max(x, y))
using namespace std;

const int NS = (int)3e5 + 4;
int n;
int a[NS], f[NS], mn[NS];
int dp[NS], len[NS];
vector<int> way[NS];
int md;
vector<int> pb;

void sol3(int x, int pr){
    len[x] = a[x];
    for(auto&nxt:way[x]){
        if(nxt == pr){
            continue;
        }

        if(a[x] + 1 == a[nxt]){
            sol3(nxt, x);
            len[x] = max(len[x], len[nxt]);
        }
        else{
            pb.push_back(a[x]);
        }
    }
}

int sol2(int x, int pr){
    int rv = 0;
    for(auto&nxt:way[x]){
        if(nxt == pr){
            continue;
        }

        if((a[x] + 1) % md == a[nxt]){
            rv += sol2(nxt, x);
        }
        else{
            rv += dp[nxt];
        }
    }
    if(dp[x]){
        rv = min(rv, dp[x]);
    }
    return rv;
}

void sol(int x, int pr){
    for(auto&nxt:way[x]){
        if(nxt == pr){
            continue;
        }

        sol(nxt, x);
    }

    md = (int)1e18;
    pb.clear();
    sol3(x, pr);
    dp[x] = sol2(x, pr) + mn[len[x]];
    md = len[x] + 1;
    dp[x] = min(dp[x], sol2(x, pr) + f[len[x]]);
    for(auto&i:pb){
        md = i + 1;
    dp[x] = min(dp[x], sol2(x, pr) + f[i]);
    }
}

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

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

    for(int i = 1; i < n; ++i){
        int x, y;
        cin >> x >> y;
        --x, --y;
        way[x].push_back(y);
        way[y].push_back(x);
    }

    sol(0, -1);

    cout << dp[0] << '\n';
    
    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 194 ms 8012 KB Output is correct
2 Correct 181 ms 8220 KB Output is correct
3 Correct 219 ms 8092 KB Output is correct
4 Correct 66 ms 7968 KB Output is correct
5 Correct 11 ms 7892 KB Output is correct
6 Correct 6 ms 7876 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1565 ms 38660 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 4 ms 7372 KB Output is correct
3 Correct 3 ms 7292 KB Output is correct
4 Correct 3 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 3 ms 7380 KB Output is correct
7 Correct 3 ms 7380 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 194 ms 8012 KB Output is correct
2 Correct 181 ms 8220 KB Output is correct
3 Correct 219 ms 8092 KB Output is correct
4 Correct 66 ms 7968 KB Output is correct
5 Correct 11 ms 7892 KB Output is correct
6 Correct 6 ms 7876 KB Output is correct
7 Correct 3 ms 7380 KB Output is correct
8 Correct 4 ms 7372 KB Output is correct
9 Correct 3 ms 7292 KB Output is correct
10 Correct 3 ms 7380 KB Output is correct
11 Correct 3 ms 7380 KB Output is correct
12 Correct 3 ms 7380 KB Output is correct
13 Correct 3 ms 7380 KB Output is correct
14 Correct 25 ms 7764 KB Output is correct
15 Correct 116 ms 7784 KB Output is correct
16 Correct 9 ms 7784 KB Output is correct
17 Correct 21 ms 7764 KB Output is correct
18 Correct 8 ms 7764 KB Output is correct
19 Correct 7 ms 7764 KB Output is correct
20 Correct 7 ms 7764 KB Output is correct
21 Correct 10 ms 7764 KB Output is correct
22 Correct 13 ms 7764 KB Output is correct
23 Correct 12 ms 7764 KB Output is correct
24 Correct 602 ms 7828 KB Output is correct
25 Correct 845 ms 7944 KB Output is correct
26 Correct 1382 ms 7960 KB Output is correct
27 Execution timed out 1577 ms 7828 KB Time limit exceeded
28 Halted 0 ms 0 KB -

Subtask #5
0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 194 ms 8012 KB Output is correct
2 Correct 181 ms 8220 KB Output is correct
3 Correct 219 ms 8092 KB Output is correct
4 Correct 66 ms 7968 KB Output is correct
5 Correct 11 ms 7892 KB Output is correct
6 Correct 6 ms 7876 KB Output is correct
7 Execution timed out 1565 ms 38660 KB Time limit exceeded
8 Halted 0 ms 0 KB -