Submission #33624

#	Time	Username	Problem	Language	Result	Execution time	Memory
33624		sinhriv	Palembang Bridges (APIO15_bridge)	C++14	22 / 100	66 ms	5176 KiB

bridge

#include <bits/stdc++.h>

using namespace std;

struct Point{
	int x;
	int y;

	void read(){
		char read[5];
		scanf("%s%d", read, &y);
		x = (read[0] - 'A');
	}
};	

struct Person{
	Point u;
	Point v;

	bool check(){
		u.read();
		v.read();
		return (u.x == v.x);
	}

	int calc(int val){
		return abs(u.y - val) + abs(v.y - val);
	}
};

vector < pair < int, int > > a;

long long One(){
	if(a.size() == 0) return 0;
	int n = a.size();
	vector < int > lst;

	for(int i = 0; i < n; ++i){
		lst.push_back(a[i].first);
		lst.push_back(a[i].second);
	}

	sort(lst.begin(), lst.end());

	long long ans = 0;


	for(int i = 0; i < n + n; ++i){
		ans += abs(lst[i] - lst[n]);
	}
	return ans + n; 
}

int main(){
	if(fopen("1.inp", "r")){
		freopen("1.inp", "r", stdin);
	}

	long long out = 0;

	int k, n;
	scanf("%d%d", &k, &n);

	for(int i = 1; i <= n; ++i){
		Person x;
		if(x.check()){
			out += x.calc(x.u.y);
		}
		else{
			a.emplace_back(x.u.y, x.v.y);
		}
	}

	cout << One() + out;

	return 0;
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:56:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen("1.inp", "r", stdin);
                               ^
bridge.cpp:62:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &k, &n);
                       ^
bridge.cpp: In member function 'void Point::read()':
bridge.cpp:11:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s%d", read, &y);
                          ^

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