Submission #282283

#	Time	Username	Problem	Language	Result	Execution time	Memory
282283		aloo123	Remittance (JOI19_remittance)	C++14	100 / 100	567 ms	39032 KiB

remittance

        #include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <ratio>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <climits>
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define in insert
#define vll vector<ll>
#define endl "\n"
#define pll pair<ll,ll>
#define f first
#define s second
#define FOR(i,a,b) for(int i=(a),_b=(b); i<=_b; i++)
#define int ll
#define sz(x) (ll)x.size()
#define all(x) (x.begin(),x.end())
using namespace std;

 
const ll INF = 1e12;
const ll N =(1e6+5); // TODO : change value as per problem
const ll MOD = 1e9+7;

int a[N],b[N];
int n;
int nxt(int x){
    if(x == n) return 1;
    return x+1;
}
void solve(){
    cin >> n;   
    for(int i = 1;i <= n;i++){
        cin >> a[i] >> b[i];
    }
    bool sirfzero = true;
    for(int i =1;i<=n;i++){
        sirfzero &= (b[i] == 0);

    }
    if(sirfzero){
        for(int i =1;i<=n;i++){
            if(a[i]){
                cout<<"No\n";
                return;
            }
        }
    }
        int ta[n+1],tb[n+1];
        for(int j = 1;j<=n;j++) ta[j]= a[j],tb[j] = b[j];
        int operations = 1;
        while(operations <= 200){
            for(int cur = 1;cur<=n;cur++){
                        int k = nxt(cur);
                        if(ta[cur] > tb[cur]){
                            int x =max(1ll, (ta[cur]-tb[cur])/2);
                            ta[cur] -= 2*x;
                            ta[k] += (x);
                        }}

                        operations++;
        }
         bool ok = true;
            for(int j = 1;j<=n;j++)
                ok &= (ta[j] == tb[j]);
            if(ok){
                cout<<"Yes\n";
                return;
            }   
       
    cout<<"No\n";
}
signed main(){
 
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
     // freopen(".in","r",stdin);freopen(".out","w",stdout);
    
     ll tt=1;   
     // cin >> tt;
    while(tt--){    
        solve();
    }    
}

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