Submission #70012

#	Time	Username	Problem	Language	Result	Execution time	Memory
70012		3zp	Zalmoxis (BOI18_zalmoxis)	C++14	100 / 100	457 ms	17976 KiB

zalmoxis

#include<bits/stdc++.h>
using namespace std;
int a[2000009];
int F[2000009];
stack<int> S;
int sf = 0;
void RR(){
    while(S.size() > 1){
        int x = S.top(); S.pop();
        if(S.top() != x){
            S.push(x);
            return;
        }
        S.top() ++;
    }

}
vector<int> divide(int x, int mx){

    if(mx == 0) return {};
    if(mx == 1 || x == 0) {
        return {x};
    }
    if((1<<x) <= mx){
        vector<int> ans;
        for(int i = 0; i < (1<<x); i++)
            ans.push_back(0);
        return ans;
    }
    vector<int> ans1 = divide(x - 1, mx - 1),
    ans2 = divide(x - 1, mx - ans1.size());
    for(int i = 0; i < ans2.size(); i++)
        ans1.push_back(ans2[i]);
    return ans1;
}
main(){
    vector<int> ans;
    int n, k;
    cin >> n >> k;
    for(int i = 1; i <= n; i++)
        cin >> a[i];
    for(int i = 1; i <= n; i++){
        S.push(a[i]);
        RR();
        ans.push_back(a[i]);
        while((i == n && S.size() > 1) || (i != n && S.top() < a[i+1])){
            if(S.size())ans.push_back(S.top());
            if(S.size()) S.push(S.top());
            F[ans.size()-1] = 1;
            RR();
        }
    }
    int x; if (S.size()) x = S.top();
    for(int i = x; i <= 29; i++)
        ans.push_back(i),
        F[ans.size()-1] = 1;
    vector<int> ANS;
    int l = ans.size();
    for(int i = 0; i < ans.size(); i++){
        if(F[i] == 0)
        {
            ANS.push_back(ans[i]);
            continue;
        }

        vector<int> X = divide(ans[i], n + k - l + 1);
        l += X.size() - 1;
        for(int i = 0; i < X.size(); i++)
            ANS.push_back(X[i]);
    }
    for(int i = 0; i < ANS.size(); i++)
        cout<<ANS[i] << " ";
    cout<<endl;
}

Compilation message (stderr)

zalmoxis.cpp: In function 'std::vector<int> divide(int, int)':
zalmoxis.cpp:32:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < ans2.size(); i++)
                    ~~^~~~~~~~~~~~~
zalmoxis.cpp: At global scope:
zalmoxis.cpp:36:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
zalmoxis.cpp: In function 'int main()':
zalmoxis.cpp:59:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < ans.size(); i++){
                    ~~^~~~~~~~~~~~
zalmoxis.cpp:68:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < X.size(); i++)
                        ~~^~~~~~~~~~
zalmoxis.cpp:71:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < ANS.size(); i++)
                    ~~^~~~~~~~~~~~
zalmoxis.cpp:53:9: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int x; if (S.size()) x = S.top();
         ^

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