Submission #485402

#	Time	Username	Problem	Language	Result	Execution time	Memory
485402		BackNoob	Palembang Bridges (APIO15_bridge)	C++14	22 / 100	35 ms	4188 KiB

bridge

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define endl '\n'
#define MASK(i) (1LL << (i))
#define ull unsigned long long
#define ld long double
#define pb push_back
#define all(x) (x).begin() , (x).end()
#define BIT(x , i) ((x >> (i)) & 1) 
#define TASK "task"
#define sz(s) (int) (s).size()

using namespace std;
const int mxN = 3e5 + 227;
const int inf = 1e9 + 277;
const int mod = 1e9 + 7;
const ll infll = 1e18 + 7;
const int base = 307;
const int LOG = 20;
 
template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}

struct item{
	int b1 , z1 , b2 , z2;
} a[mxN];

int n , k;

ll f(int x)
{

	ll res = 0;
	for(int i = 1 ; i <= n ; i++) 
	{
		if(a[i].z1 == a[i].z2) res += abs(a[i].b1 - a[i].b2);
		else {
			res += abs(x - a[i].b1) + abs(x - a[i].b2) + 1;
		}
	}

	return res;
}

void solve()
{
	cin >> k >> n;
	for(int i = 1 ; i <= n ; i++) {
		char c1 , c2;
		cin >> c1 >> a[i].b1 >> c2 >>  a[i].b2;
		a[i].z1 = (c1 == 'A' ? 1 : 2);
		a[i].z2 = (c2 == 'A' ? 1 : 2);
	}

	int lo = 0 , hi = inf;
	while(lo + 1 < hi) {
		int mid = (lo + hi) / 2;
		if(f(mid) > f(mid + 1)) lo = mid;
		else hi = mid;
	}

	cout << min(f(lo) , f(hi));
}
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    //freopen(TASK".inp" , "r" , stdin);
    //freopen(TASK".out" , "w" , stdout);
    
    int tc = 1;
    //cin >> tc;
    while(tc--) {
    	solve();
    }
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 14 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37