제출 #1050384

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1050384		otarius	Gap (APIO16_gap)	C++17	30 / 100	37 ms	3792 KiB

gap

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

// #pragma GCC optimize("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ull unsigned long long
#define all(x) (x).begin(),(x).end()

// #define int long long
// #define int unsigned long long

// #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>
// #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>

void open_file(string filename) {
    freopen((filename + ".in").c_str(), "r", stdin);
    freopen((filename + ".out").c_str(), "w", stdout);
}

// const ll mod = 1e9 + 7;
// const ll mod = 998244353;

const ll inf = 1e9;
const ll biginf = 1e18;
const int maxN = 5 * 1e5 + 5;

ll findGap(int t, int n) {
    if (t == 1) {
        vector<ll> arr;
        ll l = 1, r = 1e18, mn, mx;
        for (int i = 1; i <= (n + 1) / 2; i++) {
            MinMax(l, r, &mn, &mx);
            arr.pb(mn); arr.pb(mx);
            l = mn + 1; r = mx - 1;
        } sort(all(arr));
        mx = 0;
        for (int i = 1; i < arr.size(); i++) {
            mx = max(mx, arr[i] - arr[i - 1]);
        } return mx;
    } else {
        ll mn, mx;
        MinMax(1, 1e18, &mn, &mx);
        // mn + (n - 1) * cnt = mx
        // cnt = (mx - mn) / (n - 1);
        ll cnt = (mx - mn) / (n - 1) + ((mx - mn) % (n - 1) > 0), lst = mn, ans = cnt, i, _mn, _mx;
        for (i = mn; i + cnt <= mx; i += cnt + 1) {
            MinMax(i, i + cnt, &_mn, &_mx);
            if (_mn != -1) {
                ans = max(ans, _mn - lst);
                lst = _mx;
            }
        } return ans;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for (int i = 1; i < arr.size(); i++) {
      |                         ~~^~~~~~~~~~~~
gap.cpp: In function 'void open_file(std::string)':
gap.cpp:27:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     freopen((filename + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gap.cpp:28:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |     freopen((filename + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70