Submission #785442

#	Time	Username	Problem	Language	Result	Execution time	Memory
785442		makanhulia	Global Warming (CEOI18_glo)	C++17	Compilation error	0 ms	0 KiB

glo

#include<bits/stdc++.h>
#define int long long
using namespace std;
signed main() {
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, x, ans; cin >> n >> x;
   if(x==0) {
     vector<int> a(n); for(int &p : a) cin >> p;
     vector<int> dp; int ans=1;
      for(int p : a) {
         auto it=lower_bound(dp.begin(), dp.end(), p);
          if(it==dp.end()) dp.push_back(p);
          else *it=p;
      }
      ans=dp.size();
    } else if(x<=5 && n<=50000) {
      while(n--) {
        int p; cin >> p;
        vector<int> tempaa=a;
        auto it=lower_bound(tempaa.begin(), tempaa.end(), p);
        if(it==tempaa.end()) tempaa.push_back(p);
        else *it=p;
        vector<int> tempba=b;
        it=lower_bound(tempba.begin(), tempba.end(), p);
        if(it==tempba.end()) tempba.push_back(p);
        else *it=p;
        if(tempaa.size()>tempba.size()) a=tempaa;
        else a=tempba; p-=x;
        it=lower_bound(b.begin(), b.end(), p); 
        if(it==b.end()) b.push_back(p);
        else *it=p;
      }
      ans=max(a.size(), b.size());
  } else {
    vector<int> a(n); for(int &p : a) cin >> p;
     vector<int> dp; int ans=1;
      for(int i=0; i<n; i++) {
          dp.clear();
          vector<int> temp=a;
          for(int k=i; k<n; k++) temp[k]+=x;
          for(int p : temp) {
              auto it=lower_bound(dp.begin(), dp.end(), p);
              if(it==dp.end()) dp.push_back(p);
              else *it=p;    
            }
          ans=max(ans, (int)dp.size());
      }
    }
    cout << ans << '\n';   
    return 0;
}   

Compilation message (stderr)

glo.cpp: In function 'int main()':
glo.cpp:9:26: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
    9 |      vector<int> dp; int ans=1;
      |                          ^~~
glo.cpp:19:28: error: 'a' was not declared in this scope
   19 |         vector<int> tempaa=a;
      |                            ^
glo.cpp:23:28: error: 'b' was not declared in this scope
   23 |         vector<int> tempba=b;
      |                            ^
glo.cpp:28:9: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   28 |         else a=tempba; p-=x;
      |         ^~~~
glo.cpp:28:24: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   28 |         else a=tempba; p-=x;
      |                        ^
glo.cpp:33:15: error: 'a' was not declared in this scope
   33 |       ans=max(a.size(), b.size());
      |               ^
glo.cpp:33:25: error: 'b' was not declared in this scope
   33 |       ans=max(a.size(), b.size());
      |                         ^