Submission #894441

#	Time	Username	Problem	Language	Result	Execution time	Memory
894441		vjudge1	The short shank; Redemption (BOI21_prison)	C++17	Compilation error	0 ms	0 KiB

prison

#include<bits/stdc++.h>
using namespace std;
#define endl '\n'

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n,d,T; cin>>n>>d>>T;
	vector<int> v(n); for(int& i : v) cin>>i;
	// MATRESSES ONLY CAN BE PLACED between a good and a bad --> covers a segment of just bad, so i place a matress in the ones that "recover" more spits
	vector<int> newv(n,0); newv[0] = v[0];
	set<int> 	;
	for(int i = 0; i<n; i++){
		if(v[i] <= T) good.insert(i);
	}
	vector<int> canplace;
	for(int i = 1; i<n; i++){
		newv[i] = min(newv[i-1]+1,v[i]);
		if(v[i] > T && v[i-1] < T){
			// TAKE ACTUAL BEST VALUE
			int len = *good.lower_bound(i) - i;
			len = min(len, T-newv[i-1]);
			canplace.push_back(len);
		}
	}
	sort(canplace.begin(),canplace.end());
	int sz = canplace.size();
	for(int i = 0; i<min(sz,d); i++){
		canplace.pop_back();
	}
	// will revel
	int ans = 0;
	for(int i : canplace) ans+=i;
	ans+=good.size();
	cout<<ans<<endl;
}

Compilation message (stderr)

prison.cpp: In function 'int main()':
prison.cpp:12:2: error: declaration does not declare anything [-fpermissive]
   12 |  set<int>  ;
      |  ^~~~~~~~
prison.cpp:14:17: error: 'good' was not declared in this scope
   14 |   if(v[i] <= T) good.insert(i);
      |                 ^~~~
prison.cpp:21:15: error: 'good' was not declared in this scope
   21 |    int len = *good.lower_bound(i) - i;
      |               ^~~~
prison.cpp:34:7: error: 'good' was not declared in this scope
   34 |  ans+=good.size();
      |       ^~~~