oj.uz

Submission #1031943

# Submission time Handle Problem Language Result Execution time Memory
1031943 2024-07-23T08:55:03 Z _8_8_ Palembang Bridges (APIO15_bridge) C++17
31 / 100
 2000 ms 10624 KB 
#include <bits/stdc++.h>
 
using namespace std;
    
typedef long long ll;
const int  N = 3e5 + 21, MOD = (int)1e9+7;
 
#define int ll
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(2ll*(a[i][0] - l),2*1ll*(r - a[i][1]));
        }
    }
    return sum;
}
int pp[N];
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;
    }
    if(n == 0){
        cout << res;
        return;
    }
    ll cur = 1e18,d = 1e18;
    int j = -1;
    for(int i = 0;i < (int)sc.size();i++){
        cur = 1e18;
        j = i - 1;
        int pos;
        while(j + 1 < (int)sc.size()){
            ll val = L[i] * 2ll + R[j + 1] * 2ll + calc(sc[i].first,sc[j + 1].first);
            if(val <= cur){
                pp[i] = j + 1;
            }
            cur = min(cur,val);
            j++;
        }
        d = min(d,cur);
        if(i){
            assert(pp[i] >= pp[i - 1]);
        }
    }
    cout << res + d << '\n';
}
signed main() {
    ios_base::sync_with_stdio(false);cin.tie(0);
    int t = 1; 
    // cin >> t;
    while(t--) {
        test();
    }
}

Compilation message

bridge.cpp: In function 'void test()':
bridge.cpp:88:13: warning: unused variable 'pos' [-Wunused-variable]
   88 |         int pos;
      |             ^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 1 ms 852 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 20 ms 9184 KB Output is correct
13 Correct 35 ms 10440 KB Output is correct
14 Correct 29 ms 8644 KB Output is correct
15 Correct 22 ms 6356 KB Output is correct
16 Correct 21 ms 9928 KB Output is correct
17 Correct 24 ms 10444 KB Output is correct
18 Correct 30 ms 10188 KB Output is correct
19 Correct 43 ms 10624 KB Output is correct
20 Correct 24 ms 10192 KB Output is correct
21 Correct 30 ms 10276 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 496 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 472 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 2 ms 596 KB Output is correct
11 Correct 2 ms 348 KB Output is correct
12 Correct 2 ms 472 KB Output is correct

Subtask #4
0 / 32.0

# 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 2 ms 348 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 2 ms 348 KB Output is correct
12 Correct 3 ms 348 KB Output is correct
13 Correct 1662 ms 580 KB Output is correct
14 Correct 1945 ms 856 KB Output is correct
15 Correct 1868 ms 612 KB Output is correct
16 Correct 89 ms 348 KB Output is correct
17 Correct 286 ms 548 KB Output is correct
18 Correct 131 ms 344 KB Output is correct
19 Correct 1372 ms 604 KB Output is correct
20 Correct 1683 ms 604 KB Output is correct
21 Correct 1588 ms 604 KB Output is correct
22 Execution timed out 2059 ms 604 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 4 ms 420 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 2 ms 500 KB Output is correct
11 Correct 2 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 1625 ms 604 KB Output is correct
14 Correct 1931 ms 600 KB Output is correct
15 Correct 1814 ms 604 KB Output is correct
16 Correct 45 ms 348 KB Output is correct
17 Correct 267 ms 544 KB Output is correct
18 Correct 93 ms 512 KB Output is correct
19 Correct 1322 ms 604 KB Output is correct
20 Correct 1611 ms 852 KB Output is correct
21 Correct 1510 ms 604 KB Output is correct
22 Execution timed out 2019 ms 600 KB Time limit exceeded
23 Halted 0 ms 0 KB -