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Submission #119561

# Submission time Handle Problem Language Result Execution time Memory
119561 2019-06-21T11:41:19 Z Charis02 Palembang Bridges (APIO15_bridge) C++14
63 / 100
 2000 ms 15992 KB 
#include<iostream>
#include<stdio.h>
#include<vector>
#include<cmath>
#include<queue>
#include<utility>
#include<string.h>
#include<map>
#include<set>
#include<algorithm>
#define ll long long
#define pi pair < ll,ll >
#define mp(a,b) make_pair(a,b)
#define rep(i,a,b) for(int i = a;i < b;i++)
#define N 100004
#define INF 1e18

using namespace std;

ll n,k;
pi ar[N];
ll b,d;
char a,c;
ll ans,cnt;
vector <ll>possible;
vector < ll > ola;
set < ll > p;

ll abso(ll x)
{
    if(x<0)
        return -x;
    return x;
}

ll checkbridge(ll x,ll y)
{
    ll res = ans;

    rep(i,0,cnt)
    {
        if(ar[i].first <= x && x <= ar[i].second)
        {
            res += ar[i].second-ar[i].first;
        }
        else if(ar[i].first <= y && y <= ar[i].second)
        {
            res+=ar[i].second-ar[i].first;
        }
        else
        {
            res += 2*min(min(abso(ar[i].first-x),abso(ar[i].second-x)),min(abso(ar[i].first-y),abso(ar[i].second-y)))+(ar[i].second-ar[i].first);
        }
    }

 //   cout << x << " " << y << " " << res << endl;

    return res;
}

ll findans(ll x)
{/*
    ll low = x;
    ll high = possible.size()-1;
    ll res = x;

    while(low <= high)
    {
        ll mid = (low+high)/2;

        if(checkbridge(possible[x],possible[mid-1]) >= checkbridge(possible[x],possible[mid]))
        {
            low = mid+1;
            res = mid;
        }
        else
        {
            high = mid-1;
        }
    }

    ll fin = checkbridge(possible[x],possible[res]);

    return fin;
    */
    ll low = 0;
    ll high = x;
    ll res = 0;

    while(low <= high)
    {
        ll mid = (low+high)/2;

        if(checkbridge(possible[x],possible[mid-1]) >= checkbridge(possible[x],possible[mid]))
        {
            low = mid+1;
            res = mid;
        }
        else
        {
            high = mid-1;
        }
    }
    return checkbridge(possible[x],possible[res]);

    //return min(fin,checkbridge(possible[x],possible[res]));
}

void solve2()
{
    ll fin = checkbridge(possible[0],possible[0]);

    rep(i,0,possible.size())
    {
        fin = min(fin,findans(i));
    }

    cout << fin << endl;
    return;
}

int main()
{
    ios_base::sync_with_stdio(false);

   // freopen("bridge_3_3.in","r",stdin);
    cin >> k >> n;

    rep(i,0,n)
    {
        cin >> a >> b >> c >> d;

        if(d < b)
            swap(b,d);

        if(a == c)
            ans += d-b;
        else
        {
            ar[cnt].first = b;
            ar[cnt].second = d;
            ola.push_back(b);
            ola.push_back(d);
            ans++;
            cnt++;
        }
    }

    if(cnt == 0)
    {
        cout << ans;
        return 0;
    }

    rep(i,0,cnt)
    {
        p.insert(ar[i].first);
        p.insert(ar[i].second);
    }

    for(set < ll >::iterator it = p.begin();it != p.end();it++)
    {
        possible.push_back(*it);
    }

    if(k == 2)
    {
        solve2();
        return 0;
    }

    ll low = 0;
    ll high = possible.size()-1;
    ll res = 0;

    while(low <= high)
    {
        ll mid = (low+high)/2;

        if(checkbridge(possible[mid-1],possible[mid-1]) >= checkbridge(possible[mid],possible[mid]))
        {
            low = mid+1;
            res = mid;
        }
        else
        {
            high = mid-1;
        }
    }

    cout << checkbridge(possible[res],possible[res]);

    return 0;
}

/*
2 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7

2 3
A 1 B 1
A 4 B 7
A 10 B 12
*/

Compilation message

bridge.cpp: In function 'void solve2()':
bridge.cpp:14:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(int i = a;i < b;i++)
bridge.cpp:113:9:
     rep(i,0,possible.size())
         ~~~~~~~~~~~~~~~~~~~         
bridge.cpp:113:5: note: in expansion of macro 'rep'
     rep(i,0,possible.size())
     ^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 512 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 512 KB Output is correct
8 Correct 3 ms 512 KB Output is correct
9 Correct 3 ms 512 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 512 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 512 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 3 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 3 ms 512 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 26 ms 3576 KB Output is correct
13 Correct 224 ms 15992 KB Output is correct
14 Correct 69 ms 3944 KB Output is correct
15 Correct 103 ms 9320 KB Output is correct
16 Correct 29 ms 3576 KB Output is correct
17 Correct 105 ms 15972 KB Output is correct
18 Correct 108 ms 15980 KB Output is correct
19 Correct 187 ms 15544 KB Output is correct
20 Correct 37 ms 3568 KB Output is correct
21 Correct 131 ms 15980 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 512 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 9 ms 384 KB Output is correct
15 Correct 155 ms 632 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 20 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 187 ms 512 KB Output is correct
21 Correct 78 ms 604 KB Output is correct
22 Correct 238 ms 512 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 235 ms 512 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 404 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 9 ms 384 KB Output is correct
15 Correct 154 ms 512 KB Output is correct
16 Correct 19 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 18 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 176 ms 632 KB Output is correct
21 Correct 78 ms 540 KB Output is correct
22 Correct 232 ms 632 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 225 ms 632 KB Output is correct
25 Correct 28 ms 3700 KB Output is correct
26 Correct 1080 ms 3660 KB Output is correct
27 Execution timed out 2019 ms 15080 KB Time limit exceeded
28 Halted 0 ms 0 KB -