fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. #define print(a)         for(auto x : a) cout << x << " "; cout << endl
  6.  
  7.  
  8. const int M = 1000000007;
  9. const int N = 3e5+9;
  10. const int INF = 2e9+1;
  11. const int LINF = 2000000000000000001;
  12.  
  13. inline int power(int a, int b, int mod=M) {
  14.     int x = 1;
  15.     a %= mod;
  16.     while (b) {
  17.         if (b & 1) x = (x * a) % mod; 
  18.         a = (a * a) % mod;
  19.         b >>= 1;
  20.     }
  21.     return x;
  22. }
  23.  
  24.  
  25. //_ ***************************** START Below *******************************
  26.  
  27.  
  28.  
  29.  
  30. vector<int> gas;
  31. vector<int> cost;
  32.  
  33. int consistency(int n){
  34.     int total = 0;
  35.     int sum = 0;
  36.  
  37.     int g = -1;
  38.     for(int i=0; i<n; i++){
  39.         int dif = gas[i] - cost[i];
  40.         sum += dif;
  41.         total += dif;
  42.         if(sum<0){
  43.             sum = 0;
  44.             g = i;
  45.         }
  46.     }
  47.     if(total < 0) return -1;
  48.     return g+1;
  49.  
  50. }
  51.  
  52.  
  53.  
  54.  
  55.  
  56.  
  57.  
  58.  
  59.  
  60.  
  61.  
  62.  
  63.  
  64.  
  65.  
  66. int practice(int n){
  67.  
  68.  
  69.     return 0;
  70. }
  71.  
  72.  
  73.  
  74.  
  75.  
  76. void solve() {
  77.  
  78.     int n;
  79.     cin>> n;
  80.  
  81.     gas.resize(n);
  82.     for(int i=0; i<n; i++) cin >> gas[i];
  83.  
  84.     cost.resize(n);
  85.     for(int i=0; i<n; i++) cin >> cost[i];
  86.  
  87.     cout << consistency(n) << endl;
  88.  
  89.  
  90. }
  91.  
  92.  
  93.  
  94.  
  95.  
  96. int32_t main() {
  97.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  98.  
  99.     int t = 1;
  100.     cin >> t;
  101.     while (t--) {
  102.         solve();
  103.     }
  104.  
  105.     return 0;
  106. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
copy 
2
5
1 2 3 4 5
3 4 5 1 2
3
2 3 4
3 4 3
stdout
copy 
3
-1
https://ideone.com/zoCDOR
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!