Submission #950211

#	Time	Username	Problem	Language	Result	Execution time	Memory
950211		shenfe1	Remittance (JOI19_remittance)	C++17	0 / 100	560 ms	4580 KiB

remittance

#include <bits/stdc++.h>

#pragma optimize("Ofast,unroll-loops")
#pragma target("avx2")

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define pf push_front
#define pii pair<int,int>
#define all(v) v.begin(),v.end()
#define F first
#define S second
#define mem(a,i) memset(a,i,sizeof(a))
#define sz(s) (int)s.size()
#define y1 yy
#define ppb pop_back
#define lb lower_bound
#define ub upper_bound
#define gcd(a,b) __gcd(a,b)
#define in insert
#define int ll

const int MAX=2e5+10;
const int B=500;
const int maxB=1000;
const int N=104;
const int block=450;
const int inf=2e9;  
const int mod=1e9+7;
const int mod1=1e9+9;
const ld eps=1e-9;

int dx[8]={1,0,-1,0,1,-1,-1,1};
int dy[8]={0,1,0,-1,1,-1,1,-1};

int binpow(int a,int n){
  if(!n)return 1;
  if(n%2==1)return a*binpow(a,n-1)%mod;
  int k=binpow(a,n/2);
  return k*k%mod;
}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n;
int a[MAX],b[MAX];

int r(int i){
  return i%n+1;
}

int bit(int i,int j){
  return (i>>j)&1;
}

int p[MAX],c[MAX];
bool ok=0;

bool check(){
  int na[10];
  for(int i=1;i<=n;i++)na[i]=a[i];
  for(int i=1;i<=n;i++){
    if(p[i]==1){
      na[i]-=2*c[i];
      na[r(i)]+=c[i];
    }
  }
  for(int i=1;i<=n;i++){
    if(na[i]!=b[i])return 0;
  }
  return 1;
}

void calc(int i){
  if(i==n+1){
    ok|=check();
    return;
  }
  p[i]=0;
  c[i]=0;
  calc(i+1);
  p[i]=1;
  c[i]=0;
  for(c[i]=1;c[i]<=10;c[i]++){
    calc(i+1);
  }
}

void solve(){
  cin>>n;
  for(int i=1;i<=n;i++)cin>>a[i]>>b[i];
  calc(1);
  if(ok){
    cout<<"Yes\n";
    return;
  }
  cout<<"No\n";
}

signed main(){
  // freopen("triangles.in","r",stdin);
  // freopen("triangles.out","w",stdout);
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  // prec();
  int t=1;
  // cin>>t;
  while(t--){
    solve();
  }
}

Compilation message (stderr)

remittance.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize("Ofast,unroll-loops")
      | 
remittance.cpp:4: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    4 | #pragma target("avx2")
      |

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