Submission #1083334

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083334		sonamoo	Gap (APIO16_gap)	C++14	100 / 100	49 ms	3316 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
#define pii pair<ll,ll>
#define ll long long

using namespace std;

pii query(ll s , ll e) {
    pii ret;
    MinMax(s , e , &ret.first , &ret.second);
    return ret;
}

vector<ll> v;

long long findGap(int T, int N)
{

    if (T==1) {
        ll s = 0 , e = 2e18;
        while(N > 0) {
            pii ret = query(s , e);
            if (ret.first!=-1) v.push_back(ret.first);
            if (ret.second!=-1) v.push_back(ret.second);
            s = ret.first+1 , e = ret.second-1; N -= 2;
        }
        sort(v.begin() , v.end());
        ll ans=0;
        for (int i = 0; i < v.size()-1; i++) ans = max(ans , v[i+1]-v[i]);
        return ans;
    }

    pii ret = query(0 , 2e18);
    ll mi = ret.first, ma = ret.second;
    ll gap = (ma-mi+N-2)/(N-1);
    for (ll i = mi; i <= ma; i += gap+1) {
        pii ret=query(i , i+gap);
        if (ret.first!=-1) v.push_back(ret.first);
        if (ret.second!=-1) v.push_back(ret.second);
    }
    ll ans=0;
    for (int i = 0; i < v.size()-1; i++) ans = max(ans , v[i+1]-v[i]);

	return ans;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         for (int i = 0; i < v.size()-1; i++) ans = max(ans , v[i+1]-v[i]);
      |                         ~~^~~~~~~~~~~~
gap.cpp:42:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for (int i = 0; i < v.size()-1; i++) ans = max(ans , v[i+1]-v[i]);
      |                     ~~^~~~~~~~~~~~

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