Submission #1330436

#	Time	Username	Problem	Language	Result	Execution time	Memory
1330436		ilovewaguri	Global Warming (CEOI18_glo)	C++20	0 / 100	14 ms	972 KiB

glo

#include<bits/stdc++.h>
using namespace std;
#define NAME "TEST"
#define nl '\n'
#define allofa(x,sz) x+1,x+sz+1
#define allof(x) x.begin(),x.end()
#define mset(x,val) memset(x,val,sizeof(x))
template<typename T> T Max(T x, T y){return(x>y)?x:y;};
template<typename T> T Min(T x, T y){return(x<y)?x:y;};
template<class X,class Y> bool minimize(X &a, Y b){if(a>b){a=b;return true;}return false;};
template<class X,class Y> bool maximize(X &a, Y b){if(a<b){a=b;return true;}return false;};
typedef long long ll;
const ll mod = (long long)1e9+7;
const ll LINF = (long long)1e18;
const int INF = (int)1e9;
const int MAXN = (int)2e5+5;
int a[MAXN];
int n,x;

void ccps() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    if(fopen(NAME".inp","r")) {
        freopen(NAME".inp","r",stdin);
        freopen(NAME".out","w",stdout);
    }
}

namespace sub2 {
    bool check() {
        return n<=50 and x<=50;
    }

    void sol() {
        int b[n+5],dp[n+5];
        int res = 1;
        for (int d = -x; d<=x; d++) {
            bool isTH = false;
            mset(dp,0);
            for (int l = 1; l<=n; l++) {
                for (int r = l+1; r<=n; r++) {
                    for (int i = 1; i<=n; i++) b[i] = a[i];
                    if(d==-5 and l==2 and r==3) isTH = true;
                    for (int i = l; i<=n; i++) {
                        b[i]+=d;
                    }
                }
            }
            int curLIS = 1;
            for (int i = 1; i<=n; i++) {
                dp[i] = 1;
                for (int j = 0; j<i; j++) {
                    if(b[i]>b[j]) maximize(dp[i],dp[j]+1);
                }
                maximize(curLIS,dp[i]);
            }
            maximize(res,curLIS);
        }
        cout << res;
    }
}

signed main() {
    ccps();
    cin >> n >> x;
    for (int i = 1; i<=n; i++) {
        cin >> a[i];
    }
    if(sub2::check()) return sub2::sol(),0;
}

Compilation message (stderr)

glo.cpp: In function 'void ccps()':
glo.cpp:24:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         freopen(NAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
glo.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen(NAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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