Submission #556433

#	Time	Username	Problem	Language	Result	Execution time	Memory
556433		InternetPerson10	Gap (APIO16_gap)	C++17	83.51 / 100	67 ms	3196 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
typedef long long ll;

using namespace std;

long long findGap(int T, int N) {
    if(T == 1) {
        vector<ll> nums(N);
        ll a, b, x, y, i = 0;
        a = 0, b = (long long)1000000000000000000LL;
        while(i * 2 < N) {
            MinMax(a, b, &x, &y);
            nums[i] = x;
            nums[N - i - 1] = y;
            i++; a = x + 1; b = y - 1;
        }
        ll ans = 0;
        for(int i = 1; i < N; i++) {
            ans = max(ans, nums[i] - nums[i-1]);
        }
        return ans;
    }
    if(T == 2) {
        ll l, r;
        MinMax(0, (ll)1e18, &l, &r);
        ll siz = (r - l);
        ll x = siz / N, y = (siz + N - 1) / N, a, b;
        ll i = N;
        while(x * i + y * (N - i) != siz) {
            i--;
            if(i == -1) {
                while(true) {}
            }
        }
        ll j = N - i;
        ll ans = y;
        ll g = l;
        vector<ll> nums;
        nums.push_back(l);
        while(i--) {
            MinMax(g, g + x, &a, &b);
            g += x;
            if(a == -1) continue;
            nums.push_back(a);
            nums.push_back(b);
        }
        while(j--) {
            MinMax(g, g + y, &a, &b);
            g += y;
            if(a == -1) continue;
            nums.push_back(a);
            nums.push_back(b);
        }
        for(int i = 1; i < nums.size(); i++) {
            ans = max(ans, nums[i] - nums[i-1]);
        }
        return ans;
    }
	return 0;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:55:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for(int i = 1; i < nums.size(); i++) {
      |                        ~~^~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 53.5083487467 / 70