제출 #48184

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
48184		E869120	Palembang Bridges (APIO15_bridge)	C++14	17 / 100	2074 ms	4332 KiB

bridge

#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
using namespace std;

long long N, K, Q, A[100009], B[100009], sum;
vector<long long>Z; vector<long long>S;

long long calculate() {
	long long rem = 0;
	for (int i = 1; i <= Q; i++) {
		long long F = (1LL << 60);
		for (int j = 0; j < S.size(); j++) {
			if (A[i] <= S[j] && S[j] <= B[i]) F = 0;
			F = min(F, 2LL * min(abs(A[i] - S[j]), abs(B[i] - S[j])));
		}
		rem += F;
	}
	return sum + rem;
}

int main() {
	cin >> K >> N;
	for (int i = 1; i <= N; i++) {
		char a1, b1; long long a2, b2;
		cin >> a1 >> a2 >> b1 >> b2;
		if (a1 == b1) sum += abs(a2 - b2);
		else {
			Q++; if (a2 > b2) swap(a2, b2);
			A[Q] = a2; B[Q] = b2;
			sum += (b2 - a2 + 1);
		}
	}
	Z.push_back(0);
	for (int i = 1; i <= Q; i++) { Z.push_back(A[i]); Z.push_back(B[i]); }
	sort(Z.begin(), Z.end());
	if (K == 1) {
		long long ans = (1LL << 60);
		for (int i = 0; i < Z.size(); i++) {
			S = vector<long long>{ Z[i] };
			ans = min(ans, calculate());
		}
		cout << ans << endl;
	}
	if (K == 2) {
		long long ans = (1LL << 60);
		for (int i = 0; i < Z.size(); i++) {
			for (int j = i; j < Z.size(); j++) {
				S = vector<long long>{ Z[i], Z[j] };
				ans = min(ans, calculate());
			}
		}
		cout << ans << endl;
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bridge.cpp: In function 'long long int calculate()':
bridge.cpp:14:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < S.size(); j++) {
                   ~~^~~~~~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < Z.size(); i++) {
                   ~~^~~~~~~~~~
bridge.cpp:48:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < Z.size(); i++) {
                   ~~^~~~~~~~~~
bridge.cpp:49:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = i; j < Z.size(); j++) {
                    ~~^~~~~~~~~~

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