제출 #328161

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
328161		couplefire	Gap (APIO16_gap)	C++17	100 / 100	67 ms	3216 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;

long long solve1(int n){
	queue<long long> left; stack<long long> right;
	long long cl = 0, cr = 1000000000000000000;
	while(left.size()+right.size() < n){
		long long a, b;
		MinMax(cl, cr, &a, &b);
		left.push(a); right.push(b);
		cr = b-1, cl = a+1;
	}
	vector<long long> v;
	while(!left.empty()){
		v.push_back(left.front());
		left.pop();
	}
	while(!right.empty()){
		v.push_back(right.top());
		right.pop();
	}
	long long ans = 0;
	for(int i = 1; i<v.size(); i++) ans = max(ans, v[i]-v[i-1]);
	return ans;
}

long long solve2(int n){
	long long left, right;
	MinMax(0, 1000000000000000000, &left, &right);
	long long gap = (right-left+n-2)/(n-1);
	if(right - left == 1ll*(n-1)) return 1;
	gap--;
	long long prev = left;
	long long cur = left+1;
	long long ans = 0;
	while(cur<right){
		long long cl, cr;
		MinMax(cur, cur+gap, &cl, &cr);
		if(cl == -1){
			cur += gap+1;
			continue;
		}
		ans = max(ans, cl-prev);
		ans = max(ans, cr-cl);
		prev = cr;
		cur += gap+1;
	}
	return ans;
}

long long findGap(int T, int N){
	if(T == 1) return solve1(N);
	return solve2(N);
}

컴파일 시 표준 에러 (stderr) 메시지

gap.cpp: In function 'long long int solve1(int)':
gap.cpp:8:33: warning: comparison of integer expressions of different signedness: 'std::queue<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    8 |  while(left.size()+right.size() < n){
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
gap.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for(int i = 1; i<v.size(); i++) ans = max(ans, v[i]-v[i-1]);
      |                 ~^~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70