oj.uz

Submission #965580

# Submission time Handle Problem Language Result Execution time Memory
965580 2024-04-19T00:24:54 Z vjudge1 Stove (JOI18_stove) C++17
100 / 100
 23 ms 6716 KB 
#include <bits/stdc++.h>
using namespace std;
#define int     long long
#define ll      long long
#define pii     pair <int, int> 
#define pb      push_back
#define mp      make_pair
#define dbg     puts("dbg");
#define outp(x) cout << #x << " = " << (x) << endl
#define all(x)  (x).begin(), (x).end()
#define test    int t; cin >> t; while(t--){solve();}
#define MOD     998244353
int fpb(int a,int b){if(b == 0){return a;}return fpb(b, a%b);}
int kpk(int a,int b){return (a*b)/fpb(a, b);}

int n, k, t[100003], totGroupNow, par[100003];
vector <pair <int, pii>> v;

int root(int x){
    if(par[x] == x){
        return x;
    }
    par[x] = root(par[x]);
    return par[x];
}

void join(int x, int y){
    par[root(x)] = root(y);
}

bool cek(int x, int y){
    return (root(x) == root(y));
}

void solve(){   
    cin >> n >> k;
    for(int i=1; i<=n; i++){
        cin >> t[i];
    }
    for(int i=2; i<=n; i++){
        v.pb({t[i]-t[i-1], {i-1, i}});
    }
    sort(all(v));
    totGroupNow = n;
    for(int i=1; i<=n; i++){
        par[i] = i;
    }
    for(auto i : v){
        if(totGroupNow == k) break;
        join(i.second.first, i.second.second);
        totGroupNow--;
    }
    int mini = t[1], maxi = t[1], res = 0;
    for(int i=2; i<=n+1; i++){
        if(cek(i-1, i)){
            maxi = t[i];
        } else {
            res += maxi - mini + 1;
            mini = t[i], maxi = t[i];
        }
        // cout << mini << " " << maxi << endl;
    }
    cout << res << endl;
}


int32_t main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    solve();
    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 516 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 516 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 20 ms 5420 KB Output is correct
17 Correct 20 ms 6352 KB Output is correct
18 Correct 20 ms 5888 KB Output is correct
19 Correct 21 ms 5328 KB Output is correct
20 Correct 23 ms 5452 KB Output is correct
21 Correct 19 ms 5404 KB Output is correct
22 Correct 19 ms 5328 KB Output is correct
23 Correct 20 ms 6604 KB Output is correct
24 Correct 19 ms 6716 KB Output is correct