Submission #320627

#	Time	Username	Problem	Language	Result	Execution time	Memory
320627		robosapien	Labels (NOI20_labels)	C++17	0 / 100	49 ms	4816 KiB

Labels

#include<bits/stdc++.h>
using namespace std;

int main()
{
    ios::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    int n;
    cin >> n;
    int a[n] = {};
    int pref = 0, mx_pref = INT_MIN;
    for(int i = 0; i < n - 1; ++i) {
        cin >> a[i];
        pref += a[i];
        mx_pref = max(mx_pref, pref);
    }
    if(mx_pref != n - 1) {
        cout << -1;
    }
    else {
        int first = n;
        pref = 0;
        for(int i = 0; i < n - 1; ++i) {
            pref += a[i];
            first = min(first, max(1, 1 - pref));
        }
        pref = 0;
      vector<int> ans(n);
      bool ok = true;
        for(int i = 0; i < n; ++i) {
          ans.push_back(first + pref);
            pref += a[i];
          if(first + pref < 1 or first + pref > n)
            	ok = false;
        }
      if(ok){
        for(int i = 0; i < n; ++i)
          cout << ans[i] << " ";
      }
      else {
        cout << -1;
      }
    }

}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 15
• Subtask 3: 0 / 25
• Subtask 4: 0 / 18
• Subtask 5: 0 / 35