Submission #715389

#	Time	Username	Problem	Language	Result	Execution time	Memory
715389		study	Gap (APIO16_gap)	C++17	0 / 100	76 ms	2248 KiB

gap

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

long long findGap(int T, int N){
	ll pmini = -1, pmaxi = 1e18+1;
	vector<ll> ans;
	bool ok1 = 0, ok2 = 0;
	for (int i=0; i<(N+1)/2; ++i){
		long long a,b;
		MinMax(pmini+1,pmaxi-1,&a,&b);
		if (a != -1 and !ok1) ans.emplace_back(a);
		if (b != -1 and a != b and !ok2) ans.emplace_back(b);
		if (a != -1) pmini = a;
		else ok1 = 1;
		if (b != -1) pmaxi = b;
		else ok2 = 1;
		if (a >= b) break;
	}
	sort(ans.begin(),ans.end());
	ans.erase(unique(ans.begin(),ans.end()),ans.end());
	ll res = 0;
	for (int i=1; i<ans.size(); ++i){
		res = max(res,ans[i]-ans[i-1]);
	}
	return res;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:24:17: 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<ans.size(); ++i){
      |                ~^~~~~~~~~~~

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