oj.uz

Submission #937372

# Submission time Handle Problem Language Result Execution time Memory
937372 2024-03-04T01:37:51 Z VinhLuu Palembang Bridges (APIO15_bridge) C++17
63 / 100
 2000 ms 10144 KB 
//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#include <bits/stdc++.h>
#define int long long
#define ll long long
#define fi first
#define se second
#define pb push_back
#define all(lmao) lmao.begin(), lmao.end()

using namespace std;

typedef pair<int,int> pii;
typedef tuple<int,int,int> tp;
const int N = 2e5 + 5;
const int oo = 1e18;
const int mod = 1e9 + 7;
const int K = 1e5 + 5;

char P[N], Q[N];
int S[N], T[N], k, n, ans, s[N];
vector<int> vr;
vector<pii> h;
int cnt = 0;

namespace sub1{
    void solve(){
        int ret = oo;
        for(int i = 1; i <= cnt << 1; i ++){
            for(int j = i + 1; j <= cnt << 1; j ++){
                int kq = 0;
                for(auto [l, r] : h){
                    if(l <= vr[i - 1] && vr[i - 1] <= r) kq += 1 + vr[i - 1] - l + r - vr[i - 1];
                    else if(l <= vr[j - 1] && vr[j - 1] <= r) kq += 1 + vr[j - 1] - l + r - vr[j - 1];
                    else if(vr[i - 1] <= l && r <= vr[j - 1]) kq += 1 + min(l - vr[i - 1] + r - vr[i - 1], vr[j - 1] - l + vr[j - 1] - r);
                    else if(r <= vr[i - 1]) kq += 1 + vr[i - 1] - l + vr[i - 1] - r;
                    else kq += 1 + l - vr[j - 1] + r - vr[j - 1];
                }
                ret = min(ret, kq + ans);
            }
        }
        ans = ret;
    }
}

namespace sub2{

    int cal(int i,int j){
        int kq = 0;
        for(auto [l, r] : h){
            if(l <= i && i <= r) kq += 1 + i - l + r - i;
            else if(l <= j && j <= r) kq += 1 + j - l + r - j;
            else if(i <= l && r <= j) kq += 1 + min(l - i + r - i, j - l + j - r);
            else if(r <= i) kq += 1 + i - l + i - r;
            else kq += 1 + l - j + r - j;
        }
        return kq;
    }
    int ck(int i){
        int ret = oo;
        int l = vr[i - 1] + 1;
        int r = min((int)1e9, vr[cnt * 2 - 1] + 1);
        while(l < r - 2){
            int m1 = l + (r - l)/3, m2 = r - (r - l)/3;
            int u = cal(vr[i - 1], m1);
            int v = cal(vr[i - 1], m2);
            if(u > v) l = m1; else r = m2;
            ret = min({ret, u, v});
        }
        for(int j = l; j <= r; j ++) ret = min(ret, cal(vr[i - 1], j));
        return ret;
    }
    void solve(){
        int ret = oo;
        int le = 1, ri = 2 * cnt, mid1, mid2;
        while(le < ri - 2){
            mid1 = le + (ri - le)/3, mid2 = ri - (ri - le)/3;
            int u = ck(mid1);
            int v = ck(mid2);
            if(u > v) le = mid1; else ri = mid2;
            ret = min({ret, u, v});
        }
        for(int i = le; i <= ri; i ++) ret = min(ret, ck(i));
        ans += ret;
//        for(int i = 1; i <= cnt * 2; i ++){
//            int l = vr[i - 1] + 1;
//            int r = min((int)1e9, vr[cnt * 2 - 1] + 1);
//            while(l < r - 2){
//                int m1 = l + (r - l)/3, m2 = r - (r - l)/3;
//                int u = cal(vr[i - 1], m1);
//                int v = cal(vr[i - 1], m2);
//                if(u > v) l = m1; else r = m2;
//                ret = min({ret, u, v});
//            }
//            for(int j = l; j <= r; j ++) ret = min(ret, cal(vr[i - 1], j));
////            cerr << i << " " << ret << "f\n";
//        }
//        ans = ret + ans;
    }
}

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

    #define task "v"
    if(fopen(task ".inp","r")){
        freopen(task ".inp","r",stdin);
        freopen(task ".out","w",stdout);
    }

    cin >> k >> n;


    for(int i = 1; i <= n; i ++){
        cin >> P[i] >> S[i] >> Q[i] >> T[i];
        if(P[i] == Q[i]){
            ans += abs(S[i] - T[i]);
            continue;
        }
        vr.pb(S[i]);
        vr.pb(T[i]);
        cnt++;
        if(S[i] > T[i]) swap(S[i], T[i]);
        h.pb({S[i], T[i]});
    }
    if(!vr.empty()){
        sort(vr.begin(), vr.end());
        int mx = 0;
        for(int i = 1; i <= cnt * 2; i ++) mx = max(mx, vr[i - 1]), s[i] = s[i - 1] + vr[i - 1];
        if(k == 1){
            int kq = oo;
            int lim = vr[cnt - 1];
            for(int j = max(vr[0], lim - (int)1e5); j <= min(vr[2 * cnt - 1], lim + (int)1e5); j ++){
                int i = lower_bound(all(vr), j) - vr.begin();
                if(i < 2 * cnt){
                    i++;}
                    kq = min(kq, cnt + j * (i - 1) - j * (2 * cnt - i + 1) - s[i - 1] + s[cnt * 2] - s[i - 1]);
            }
            ans = ans + kq;
        }else{
//            if(n <= 100) sub1 :: solve();
//            else
                sub2 :: solve();
        }
    }
    cout << ans;

}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:109:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  109 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:110:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  110 |         freopen(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 4 ms 4444 KB Output is correct
5 Correct 3 ms 4444 KB Output is correct
6 Correct 2 ms 4444 KB Output is correct
7 Correct 3 ms 4572 KB Output is correct
8 Correct 2 ms 4444 KB Output is correct
9 Correct 3 ms 4444 KB Output is correct
10 Correct 3 ms 4440 KB Output is correct
11 Correct 3 ms 4444 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 3 ms 4440 KB Output is correct
5 Correct 4 ms 4440 KB Output is correct
6 Correct 2 ms 4444 KB Output is correct
7 Correct 3 ms 4444 KB Output is correct
8 Correct 2 ms 4440 KB Output is correct
9 Correct 3 ms 4444 KB Output is correct
10 Correct 3 ms 4648 KB Output is correct
11 Correct 3 ms 4648 KB Output is correct
12 Correct 23 ms 8260 KB Output is correct
13 Correct 39 ms 8136 KB Output is correct
14 Correct 26 ms 7944 KB Output is correct
15 Correct 22 ms 6856 KB Output is correct
16 Correct 22 ms 8128 KB Output is correct
17 Correct 27 ms 8216 KB Output is correct
18 Correct 35 ms 8128 KB Output is correct
19 Correct 36 ms 8136 KB Output is correct
20 Correct 31 ms 8376 KB Output is correct
21 Correct 35 ms 8128 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 2 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 2 ms 4444 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 2 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 2 ms 4444 KB Output is correct
12 Correct 2 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 4 ms 4444 KB Output is correct
15 Correct 12 ms 4648 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 2 ms 4444 KB Output is correct
18 Correct 3 ms 4444 KB Output is correct
19 Correct 4 ms 4568 KB Output is correct
20 Correct 10 ms 4444 KB Output is correct
21 Correct 6 ms 4444 KB Output is correct
22 Correct 18 ms 4644 KB Output is correct
23 Correct 14 ms 4444 KB Output is correct
24 Correct 16 ms 4444 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 2 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 2 ms 4444 KB Output is correct
12 Correct 2 ms 4584 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 4 ms 4444 KB Output is correct
15 Correct 12 ms 4652 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 2 ms 4444 KB Output is correct
18 Correct 3 ms 4444 KB Output is correct
19 Correct 4 ms 4444 KB Output is correct
20 Correct 10 ms 4444 KB Output is correct
21 Correct 6 ms 4440 KB Output is correct
22 Correct 16 ms 4648 KB Output is correct
23 Correct 12 ms 4444 KB Output is correct
24 Correct 15 ms 4444 KB Output is correct
25 Correct 53 ms 8120 KB Output is correct
26 Correct 1060 ms 9464 KB Output is correct
27 Execution timed out 2094 ms 10144 KB Time limit exceeded
28 Halted 0 ms 0 KB -