Submission #1060111

#	Time	Username	Problem	Language	Result	Execution time	Memory
1060111		ali2241	Global Warming (CEOI18_glo)	C++17	10 / 100	2061 ms	4264 KiB

glo

#include <bits/stdc++.h>
#define int long long

using namespace std;

void fun() {
    int n, x;
    cin >> n >> x;
    int arr[n];
    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
    }
    int mx = 0;
    for (int i = -x; i <= x; ++i) {
        vector<int> lis;
        for (int j = 0; j < n; ++j) {
            int a = arr[j], b = arr[j] + i;
            if (a < b) {
                swap(a, b);
            }
            int p1 = lower_bound(lis.begin(), lis.end(), a) - lis.begin();
            if (p1 == lis.size() or lis.empty()) {
                lis.push_back(a);
            }
            else {
                lis[p1] = a;
            }
            int p2 = lower_bound(lis.begin(), lis.end(), b) - lis.begin();
            if (p2 == lis.size()) {
                lis.push_back(b);
            }
            else {
                lis[p2] = b;
            }
        }
        mx = max(mx, (int)lis.size());
    }
    cout << mx << "\n";
}
 
int32_t main() {
    fun();
}

Compilation message (stderr)

glo.cpp: In function 'void fun()':
glo.cpp:22:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |             if (p1 == lis.size() or lis.empty()) {
      |                 ~~~^~~~~~~~~~~~~
glo.cpp:29:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |             if (p2 == lis.size()) {
      |                 ~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 10 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25