Submission #1023180

#	Time	Username	Problem	Language	Result	Execution time	Memory
1023180		MrAndria	DEL13 (info1cup18_del13)	C++14	0 / 100	8 ms	1492 KiB

del13

#include <bits/stdc++.h>
using namespace std;
#define ff first;
#define ss second
#define pb push_back
//#define int long long
int t,n,q,b1,l;
int a[200005];
vector <int> v,v2,v3,v1;
int main(){
    cin>>t;
    while(t--){
        cin>>n>>q;
        for(int i=1;i<=q;i++){
            cin>>a[i];
        }
        v2.clear();
        v1.clear();
        v3.clear();
        v.clear();
        a[q+1]=n+1;
        b1=0;
        for(int i=1;i<=q+1;i++){
            v.pb(a[i]-a[i-1]-1);
            // cout<<a[i]-a[i-1]-1<<" ";
        }
        // cout<<endl;
        l=0;
        v2.pb(l);
        for(int i=0;i<v.size();i++){
            v[i]-=l;
            if(v[i]<0){
                b1=1;
                break;
            }
            if(v[i]==0){
                l=0;
                v1.pb(v[i]);
            }else{
                if(v[i]%2==1){
                    l=1;
                    v1.pb(v[i]-1);
                }else{
                    if(l==2 or l==1){
                        l=0;

                        v1.pb(v[i]);
                    }else{
                        l=2;
                        v1.pb(v[i]-2);
                    }
                }
            }
            v2.pb(l);
        }
        if(l!=0 or b1){
            cout<<-1<<endl;
            continue;
        }
        for(int i=0;i<v2.size();i++){
            for(int j=0;j<(v1[i])/2;j++){
                v3.pb((a[i]+a[i+1])/2);

            }
            if(i!=v2.size()-1){
                for(int j=0;j<(v2[i+1]);j++){
                    v3.pb(a[i+1]);
                }
            }
        }
        if(v3.size()!=(n-q)/2)assert(0);
        cout<<v3.size()<<endl;
        for(int i=0;i<v3.size();i++){
            cout<<v3[i]<<" ";
        }
        cout<<endl;
    }
}

Compilation message (stderr)

del13.cpp: In function 'int main()':
del13.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |         for(int i=0;i<v.size();i++){
      |                     ~^~~~~~~~~
del13.cpp:60:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         for(int i=0;i<v2.size();i++){
      |                     ~^~~~~~~~~~
del13.cpp:65:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |             if(i!=v2.size()-1){
      |                ~^~~~~~~~~~~~~
del13.cpp:71:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   71 |         if(v3.size()!=(n-q)/2)assert(0);
      |            ~~~~~~~~~^~~~~~~~~
del13.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for(int i=0;i<v3.size();i++){
      |                     ~^~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 25
• Subtask 5: 0 / 30