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Submission #937549

# Submission time Handle Problem Language Result Execution time Memory
937549 2024-03-04T08:25:14 Z VinhLuu Palembang Bridges (APIO15_bridge) C++17
100 / 100
 79 ms 17328 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 ll oo = 1e18;
const int mod = 1e9 + 7;
const int K = 1e5 + 5;

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

namespace sub1{
    void solve(){
        ll ret = oo;
        for(int i = 1; i <= cnt << 1; i ++){
            for(int j = i + 1; j <= cnt << 1; j ++){
                ll kq = 0;
                if(vr[i - 1] == 36 && vr[j - 1] == 91){
                for(auto [l, r] : h){
                    if(l <= vr[i - 1] && vr[i - 1] <= r){
                        cout << l << " " << r << " 1\n";
                        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];
                        cout << l << " " << r << " 2\n";
                    }
                    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);
                        cout << l << " " << r << " 1\n";
                    }
                    else if(r <= vr[i - 1]){
                        cout << l << " " << r << " 1\n";
                        kq += 1 + vr[i - 1] - l + vr[i - 1] - r;
                    }
                    else{
                        kq += 1 + l - vr[j - 1] + r - vr[j - 1];
                        cout << l << " " << r << " 2\n";
                    }
                }
//                if(kq + ans == 150) cout << vr[i - 1] << " " << vr[j - 1] << "f\n";
                ret = min(ret, kq + ans);return;}
            }
        }
        ans = ret;
    }
}

namespace sub3{
    int pre[N], sf[N], a[N];

    int le, ri;

    priority_queue<int,vector<int>,greater<int>> mi;
    priority_queue<int> mx;

    void add(int x){
        if(x >= mi.top()){
            if((int)mx.size() <= mi.size()){
                mx.push(mi.top());
                le += mi.top();
                ri -= mi.top();
                mi.pop();
            }
            mi.push(x);
            ri += x;
        }else if(x <= mx.top()){
            if((int)mx.size() > (int)mi.size()){
                mi.push(mx.top());
                ri += mx.top();
                le -= mx.top();
                mx.pop();
            }
            le += x;
            mx.push(x);
        }else{
            if((int)mx.size() <= (int)mi.size()){
                le += x;
                mx.push(x);
            }else{
                mi.push(x);
                ri += x;
            }
        }
    }

    void solve(){
//        for(auto j : h) cout << j.fi << " " << j.se << "g\n";
        ans += cnt;
//        cout << ans << "h\n";
        cnt = 0;
        sort(all(h), [] (pii x, pii y){return x.fi + x.se < y.fi + y.se;});
        cnt = h.size();
//        for(auto j : h) cout << j.fi << " " << j.se << "r\n";

        pre[1] = h[0].se - h[0].fi;
        mi.push(h[0].se);
        mx.push(h[0].fi);
        ri = h[0].se;
        le = h[0].fi;

        for(int i = 2; i <= cnt; i ++){
            add(h[i - 1].fi);
            add(h[i - 1].se);
            pre[i] = ri - le;
        }

        while(!mx.empty()) mx.pop();
        while(!mi.empty()) mi.pop();

        sf[cnt] = h[cnt - 1].se - h[cnt - 1].fi;
        mi.push(h[cnt - 1].se);
        mx.push(h[cnt - 1].fi);
        le = h[cnt - 1].fi;
        ri = h[cnt - 1].se;
        for(int i = cnt - 1; i >= 1; i --){
            add(h[i - 1].fi);
            add(h[i - 1].se);
            sf[i] = ri - le;
        }

//        for(int i = 1; i <= cnt; i ++) cout << i << " " << pre[i] << " " << sf[i] << "uuuu\n";

        int ret = oo;

        for(int i = 1; i <= cnt; i ++){
//            cout << i << " " << pre[i] << " " << sf[i + 1] << "f\n";
            ret = min(ret, pre[i] + sf[i + 1]);
        }
//        cout << ans << "u\n";
        ans += ret;
    }
}

namespace sub2{
    ll cal(int i,int j){
        ll 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;
    }
    void solve(){
        ll ret = oo;

        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;
                ll u = cal(vr[i - 1], m1);
                ll v = cal(vr[i - 1], m2);
//                if(u == 27) cout << i << " "<< m1 << "g\n";
//                if(v == 27) cout << i << " " << m2<< "g\n";
                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());
        for(int i = 1; i <= cnt * 2; i ++) s[i] = s[i - 1] + vr[i - 1];
        if(k == 1){
            ll kq = oo;
            ll lim = vr[cnt - 1];
            for(int j = max(vr[0], lim - (ll)0); j <= min(vr[2 * cnt - 1], lim + (ll)0); j ++){
                int i = lower_bound(all(vr), j) - vr.begin();
                if(i < 2 * cnt){
                    i++;
                }
                    kq = min(kq, cnt + 1ll * j * (i - 1) - 1ll * j * (1ll * 2 * cnt - i + 1) - s[i - 1] + s[cnt * 2] - s[i - 1]);
            }
            ans = ans + kq;
        }else{
//            if(n <= 100)
//                sub1 :: solve();

//            else
//            if(n <= 1000)
//                sub2 :: solve();
//            else
                sub3 :: solve();
        }
    }
    cout << ans;

}

Compilation message

bridge.cpp: In function 'void sub3::add(long long int)':
bridge.cpp:76:31: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::priority_queue<long long int, std::vector<long long int>, std::greater<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |             if((int)mx.size() <= mi.size()){
      |                ~~~~~~~~~~~~~~~^~~~~~~~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:191:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  191 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:192:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  192 |         freopen(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4696 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4576 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4448 KB Output is correct
9 Correct 1 ms 4580 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4648 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 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 1 ms 4564 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 17 ms 9152 KB Output is correct
13 Correct 34 ms 10428 KB Output is correct
14 Correct 29 ms 8900 KB Output is correct
15 Correct 22 ms 7844 KB Output is correct
16 Correct 23 ms 10224 KB Output is correct
17 Correct 24 ms 10432 KB Output is correct
18 Correct 29 ms 10176 KB Output is correct
19 Correct 32 ms 10432 KB Output is correct
20 Correct 24 ms 10176 KB Output is correct
21 Correct 35 ms 10168 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 4444 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8660 KB Output is correct
11 Correct 1 ms 8540 KB Output is correct
12 Correct 1 ms 8536 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 8536 KB Output is correct
4 Correct 1 ms 8664 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 8536 KB Output is correct
8 Correct 1 ms 8544 KB Output is correct
9 Correct 1 ms 8552 KB Output is correct
10 Correct 1 ms 8552 KB Output is correct
11 Correct 1 ms 8548 KB Output is correct
12 Correct 1 ms 8564 KB Output is correct
13 Correct 2 ms 8548 KB Output is correct
14 Correct 2 ms 8548 KB Output is correct
15 Correct 2 ms 8548 KB Output is correct
16 Correct 2 ms 8548 KB Output is correct
17 Correct 2 ms 8752 KB Output is correct
18 Correct 1 ms 8676 KB Output is correct
19 Correct 2 ms 8804 KB Output is correct
20 Correct 2 ms 8548 KB Output is correct
21 Correct 2 ms 8548 KB Output is correct
22 Correct 2 ms 8548 KB Output is correct
23 Correct 2 ms 8548 KB Output is correct
24 Correct 2 ms 8548 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4452 KB Output is correct
2 Correct 1 ms 4456 KB Output is correct
3 Correct 1 ms 8552 KB Output is correct
4 Correct 1 ms 8552 KB Output is correct
5 Correct 1 ms 8552 KB Output is correct
6 Correct 1 ms 8552 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 2 ms 8552 KB Output is correct
11 Correct 2 ms 8692 KB Output is correct
12 Correct 1 ms 8540 KB Output is correct
13 Correct 1 ms 8544 KB Output is correct
14 Correct 1 ms 8544 KB Output is correct
15 Correct 2 ms 8536 KB Output is correct
16 Correct 1 ms 8704 KB Output is correct
17 Correct 1 ms 8544 KB Output is correct
18 Correct 2 ms 8540 KB Output is correct
19 Correct 1 ms 8544 KB Output is correct
20 Correct 2 ms 8540 KB Output is correct
21 Correct 2 ms 8552 KB Output is correct
22 Correct 2 ms 8744 KB Output is correct
23 Correct 2 ms 8552 KB Output is correct
24 Correct 2 ms 8540 KB Output is correct
25 Correct 32 ms 15820 KB Output is correct
26 Correct 53 ms 16108 KB Output is correct
27 Correct 74 ms 16812 KB Output is correct
28 Correct 77 ms 17240 KB Output is correct
29 Correct 79 ms 17328 KB Output is correct
30 Correct 40 ms 12480 KB Output is correct
31 Correct 27 ms 16320 KB Output is correct
32 Correct 57 ms 17272 KB Output is correct
33 Correct 47 ms 16808 KB Output is correct
34 Correct 70 ms 16820 KB Output is correct
35 Correct 40 ms 16556 KB Output is correct
36 Correct 65 ms 16816 KB Output is correct
37 Correct 27 ms 15856 KB Output is correct