Submission #1196369

#TimeUsernameProblemLanguageResultExecution timeMemory
1196369AldkCutting a Rectangle (BOI24_rectangle)C++20
0 / 100
0 ms328 KiB
#include<bits/stdc++.h> #define pb push_back #define F first #define S second #define str string #define ll long long #define ull unsigned ll #define ld long double #define pll pair<ll,ll> #define plll pair<ll,pll> #define pllll pair<pll,pll> #define pii pair<int,int> #define vl vector<ll> #define vll vector<pll> #define vlll vector<plll> #define vllll vector<pllll> #define vi vector<int> #define vii vector<pii> #define sz(x) (ll)(x).size() #define fr front() #define tp top() #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define ins insert #define m_p make_pair #pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #pragma GCC optimize("Ofast,unroll-loops,fast-math,O3") using namespace std; const ld pi=acos(-1.0); const ll e5=1e5, e6=1e6, e9=1e9; const ll inf=1e18; const ll mod=1e9+7; const ll MOD=106710087877475399; const ll N=1e5+10; const ll M=2e5+10; const ld eps=1e-9; mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); ll bpm(ll x,ll y,ll m){if(y==0)return 1%m;ll p=bpm(x,y/2,m); if(y%2==0)return p*p%m;else return p*p%m*x%m;} ll bp(ll x,ll y){if(y==0)return 1;ll p=bp(x,y/2); if(y%2==0)return p*p;else return p*p*x;} ll n,a[N],b[N]; void solve(){ cin>>n; ll s=0; for(ll i=1;i<=n;i++) cin>>a[i]>>b[i], s+=a[i]*b[i]; set<ll> ans; if(s%a[n]==0){ ll x=a[n], y=s/a[n]; for(ll i=n;i>=1;i--){ if(i==1){ if(x<y) swap(x,y); if(x==a[i]&&y==b[i]) ans.ins(min(a[n],s/a[n])); }else{ if(x==a[i]) y-=b[i]; else if(x==b[i]) y-=a[i]; else if(y==a[i]) x-=b[i]; else if(y==b[i]) x-=a[i]; else break; } } } if(s%b[n]==0){ ll x=b[n], y=s/b[n]; for(ll i=n;i>=1;i--){ if(i==1){ if(x<y) swap(x,y); if(x==a[i]&&y==b[i]) ans.ins(min(b[n],s/b[n])); }else{ if(x==a[i]) y-=b[i]; else if(x==b[i]) y-=a[i]; else if(y==a[i]) x-=b[i]; else if(y==b[i]) x-=a[i]; else break; } } } cout<<sz(ans)<<'\n'; for(ll x:ans) cout<<x<<'\n'; return; } int main(/*Aldk*/){ ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); // freopen("hyper.in", "r", stdin); // freopen("hyper.out ", "w", stdout); //cout<<setprecision(6)<<fixed; int test=1; // cin>>test; for(int i=1;i<=test;i++){ solve(); cout<<'\n'; } return 0; }
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