Submission #64786

#	Time	Username	Problem	Language	Result	Execution time	Memory
64786		Good	Zalmoxis (BOI18_zalmoxis)	C++17	100 / 100	334 ms	7220 KiB

zalmoxis

# include <bits/stdc++.h>
 
using namespace std;
 
const int N = 1e6 + 2;
 
int n, k, a[N];
deque <int> dq;
vector < pair <int, int> > vec;
 
int main(){
      scanf("%d %d", &n, &k);
 
      for(int i = 1; i <= n; i ++)
            scanf("%d", &a[i]);
 
      dq.push_back(30);
 
      int id = 1;
 
      while(id <= n){
            int v = dq.front();
            dq.pop_front();
            if(v == a[id]){
                  id ++;
            } else if(v < a[id]){
                  vec.push_back({id - 1, v});
            } else {
                  v --;
                  if(v < 0) continue;
                  dq.push_front(v);
                  dq.push_front(v);
            }
      }
 
      for(int i = 0; i < dq.size(); i ++)
            vec.push_back({id - 1, dq[i]});
 
      k -= vec.size();
      int pos = 0;
 
      for(int i = 1; i <= n; i ++){
            cout << a[i] << " ";
            while(pos < vec.size() && vec[pos].first <= i){
                  vector <int> vv;
                  dq.clear();
                  dq.push_back(vec[pos ++].second);
                  while(k > 0 && !dq.empty()){
                        int v = dq.front();
                        dq.pop_front();
                        v --;
                        if(v >= 0){
                              dq.push_front(v);
                              dq.push_front(v);
                              k --;
                        } else
                              vv.push_back(0);
                  }
                  for(int j = 0; j < dq.size(); j ++)
                        vv.push_back(dq[j]);
                  for(int j = 0; j < vv.size(); j ++)
                        cout << vv[j] << " ";
            }
      }
      
}

Compilation message (stderr)

zalmoxis.cpp: In function 'int main()':
zalmoxis.cpp:36:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i = 0; i < dq.size(); i ++)
                      ~~^~~~~~~~~~~
zalmoxis.cpp:44:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while(pos < vec.size() && vec[pos].first <= i){
                   ~~~~^~~~~~~~~~~~
zalmoxis.cpp:59:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                   for(int j = 0; j < dq.size(); j ++)
                                  ~~^~~~~~~~~~~
zalmoxis.cpp:61:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                   for(int j = 0; j < vv.size(); j ++)
                                  ~~^~~~~~~~~~~
zalmoxis.cpp:12:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d %d", &n, &k);
       ~~~~~^~~~~~~~~~~~~~~~~
zalmoxis.cpp:15:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &a[i]);
             ~~~~~^~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70