oj.uz

Submission #1031925

# Submission time Handle Problem Language Result Execution time Memory
1031925 2024-07-23T08:44:22 Z _8_8_ Palembang Bridges (APIO15_bridge) C++17
22 / 100
 49 ms 8140 KB 
#include <bits/stdc++.h>
 
using namespace std;
    
typedef long long ll;
const int  N = 1e6 + 21, MOD = (int)1e9+7;

int n,k;
ll res = 0;
array<int,2> a[N];
ll L[N],R[N];
vector<pair<int,int>> sc;
void prec(){
    for(int i = 1;i <= n;i++){
        sc.push_back({a[i][0],0});
        sc.push_back({a[i][1],1});
    }
    sort(sc.begin(),sc.end());
    ll sum = 0,col = 0;
    for(int i = 0;i < (int)sc.size();i++){
        L[i] = (sc[i].first * 1ll * col) - sum;
        if(sc[i].second == 1){
            col++;
            sum += sc[i].first;
        }
    }
    col = sum =0 ;
    for(int i = (int)sc.size() - 1;i >= 0;i--){
        R[i] = sum - (sc[i].first * 1ll * col);
        if(sc[i].second == 0){
            col++;
            sum += sc[i].first;
        }
    }
}
ll solve(){
    if(!n) return 0;
    ll res = 1e18;
    for(int i = 0;i < (int)sc.size();i++){
        res = min(res,2*(L[i] + R[i]));
    }
    return res;
}
ll calc(int l,int r){
    ll sum = 0;
    for(int i = 1;i <= n;i++){
        if(a[i][0] > l && a[i][1] < r){
            sum += min(a[i][0] - l,r - a[i][1]) * 1ll * 2;
        }
    }
    return sum;
}
void test() {
    cin >> k >> n;
    int _i = 0;
    for(int i = 1;i <= n;i++) {
        char x,y;
        int l,r;
        cin >> x >> l >> y >> r;
        if(l > r){
            swap(l,r);
            swap(x,y);
        }
        res += (r - l);
        if(x == y){
            continue;
        }
        res++;
        a[++_i] = {l,r};
    }
    n = _i;
    prec();
    if(k == 1){
        cout << res + solve();
        return;
    }
    ll cur = 1e18,d = 1e18;
    int j = -1;
    for(int i = 0;i < (int)sc.size();i++){
        cur = 1e18;
        j = i - 1;
        while(j + 1 < (int)sc.size()){
            ll val = L[i] * 2 + R[j + 1] * 2 + calc(sc[i].first,sc[j].first);
            cur = min(cur,val);
            j++;
            // if(val <cur){
            //     j++;
            //     cur = val;
            // }else break;
        }
        // cout << sc[i].first << ' ' << sc[j].first <<  ' ' << cur << '\n';
        d = min(d,cur);
    }
    cout << res + d << '\n';
}
int main() {
    ios_base::sync_with_stdio(false);cin.tie(0);
    int t = 1; 
    // cin >> t;
    while(t--) {
        test();
    }
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 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 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 20 ms 6812 KB Output is correct
13 Correct 36 ms 8068 KB Output is correct
14 Correct 35 ms 6460 KB Output is correct
15 Correct 23 ms 5072 KB Output is correct
16 Correct 23 ms 7368 KB Output is correct
17 Correct 26 ms 8140 KB Output is correct
18 Correct 26 ms 7752 KB Output is correct
19 Correct 49 ms 7884 KB Output is correct
20 Correct 32 ms 7632 KB Output is correct
21 Correct 35 ms 7812 KB Output is correct

Subtask #3
0 / 9.0

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

Subtask #4
0 / 32.0

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

Subtask #5
0 / 37.0

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