Submission #570577

#	Time	Username	Problem	Language	Result	Execution time	Memory
570577		MohammadAghil	Remittance (JOI19_remittance)	C++14	0 / 100	1 ms	212 KiB

remittance

      #include <bits/stdc++.h>
//   #pragma GCC optimize ("Ofast,unroll-loops")
// #pragma GCC target ("avx2")
    using namespace std;
  typedef long long ll;
   typedef pair<int, int> pp;
    #define er(args ...) cerr << __LINE__ << ": ", err(new istringstream(string(#args)), args), cerr << endl
      #define per(i,r,l) for(int i = (r); i >= (l); i--)
        #define rep(i,l,r) for(int i = (l); i < (r); i++)
           #define all(x) x.begin(), x.end()
              #define sz(x) (int)(x).size()
                  #define pb push_back
                      #define ss second
                           #define ff first
                                   void err(istringstream *iss){}template<typename T,typename ...Args> void err(istringstream *iss,const T &_val, const Args&...args){string _name;*iss>>_name;if(_name.back()==',')_name.pop_back();cerr<<_name<<" = "<<_val<<", ",err(iss,args...);}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod = 1e9 + 7, maxn = 1e6 + 5, lg = 22, inf = ll(1e9) + 5;
ll pw(ll a,ll b,ll md=mod){if(!b)return 1;ll k=pw(a,b>>1ll);return k*k%md*(b&1ll?a:1)%md;}

int main(){
     cin.tie(0) -> sync_with_stdio(0);
     int n; cin >> n;
     vector<int> c(n);
     set<pp> s;
     rep(i,0,n) {
          int a, b; cin >> a >> b;
          c[i] = a-b;
          s.insert({-c[i], i});
     }
     while(-begin(s)->ff > 1){
          auto[_, id] = *begin(s);
          s.erase(begin(s));
          int t = (c[id]+1)>>1, nx = (id + 1)%n; c[id] &= 1;
          s.erase(pp(-c[nx], nx));
          s.insert({-c[id], id}), c[nx] += t;
          s.insert({-c[nx], nx});
     }
     cout << (begin(s)->ff == 0 && prev(end(s))->ff == 0? "Yes\n": "No\n");
     return 0; 
}

Compilation message (stderr)

remittance.cpp: In function 'int main()':
remittance.cpp:31:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   31 |           auto[_, id] = *begin(s);
      |               ^

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 45