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Submission #646386

# Submission time Handle Problem Language Result Execution time Memory
646386 2022-09-29T17:34:46 Z Tenis0206 Gap (APIO16_gap) C++11
100 / 100
 61 ms 3124 KB 
#include <bits/stdc++.h>
#include "gap.h"

using namespace std;

long long n;

long long bck = 1000;
long long pmax = 0;

long long solve1()
{
    int l = 1;
    int r = n;
    long long st = 0, dr = 1e18;
    vector<long long> a,b;
    while(l<=r)
    {
        long long x,y;
        MinMax(st,dr,&x,&y);
        a.push_back(x);
        b.push_back(y);
        ++l;
        --r;
        st = x + 1;
        dr = y - 1;
    }
    vector<long long> v;
    for(auto it : a)
    {
        v.push_back(it);
    }
    reverse(b.begin(),b.end());
    for(auto it : b)
    {
        v.push_back(it);
    }
    long long Max = 0;
    for(int i=1;i<v.size();i++)
    {
        Max = max(Max,v[i] - v[i-1]);
    }
    return Max;
}

long long solve2(long long st, long long dr)
{
    MinMax(st,dr,&st,&dr);
    long long pmax = (dr - st + n - 2) / (n - 1);
    long long last = -1;
    long long rez = -1;
    if(n==2)
    {
        return dr - st;
    }
    while(st<=dr)
    {
        long long l = st;
        long long r = min(dr,l + pmax);
        MinMax(l,r,&l,&r);
        if(l!=-1 && last!=-1)
        {
            rez = max(rez,l-last);
        }
        if(l!=-1)
        {
            last = r;
        }
        st += pmax + 1;
    }
    return rez;
}

long long findGap(int t, int N)
{
    n = N;
    if(t==1)
    {
        return solve1();
    }
    return solve2(1,1e18);
}

Compilation message

gap.cpp: In function 'long long int solve1()':
gap.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(int i=1;i<v.size();i++)
      |                 ~^~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 288 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 9 ms 1136 KB Output is correct
17 Correct 9 ms 1132 KB Output is correct
18 Correct 10 ms 1104 KB Output is correct
19 Correct 10 ms 1132 KB Output is correct
20 Correct 7 ms 1104 KB Output is correct
21 Correct 36 ms 3052 KB Output is correct
22 Correct 39 ms 3124 KB Output is correct
23 Correct 38 ms 3020 KB Output is correct
24 Correct 39 ms 2980 KB Output is correct
25 Correct 31 ms 3016 KB Output is correct
26 Correct 36 ms 3000 KB Output is correct
27 Correct 39 ms 3012 KB Output is correct
28 Correct 36 ms 3004 KB Output is correct
29 Correct 36 ms 2984 KB Output is correct
30 Correct 29 ms 3012 KB Output is correct
31 Correct 0 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 12 ms 432 KB Output is correct
17 Correct 12 ms 464 KB Output is correct
18 Correct 12 ms 464 KB Output is correct
19 Correct 12 ms 512 KB Output is correct
20 Correct 6 ms 464 KB Output is correct
21 Correct 53 ms 1076 KB Output is correct
22 Correct 50 ms 1080 KB Output is correct
23 Correct 51 ms 1076 KB Output is correct
24 Correct 52 ms 1076 KB Output is correct
25 Correct 47 ms 1080 KB Output is correct
26 Correct 50 ms 960 KB Output is correct
27 Correct 50 ms 1060 KB Output is correct
28 Correct 61 ms 1076 KB Output is correct
29 Correct 50 ms 1076 KB Output is correct
30 Correct 24 ms 996 KB Output is correct
31 Correct 0 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct