Submission #784271

#TimeUsernameProblemLanguageResultExecution timeMemory
784271PCTprobabilityPairs (IOI07_pairs)C++17
80 / 100
4072 ms18800 KiB
#include <bits/stdc++.h> using namespace std; /*#if __has_include(<atcoder/all>) #include <atcoder/all> using namespace atcoder; #endif*/ using ll = long long; using ld = long double; using ull = unsigned long long; #define endl "\n" typedef pair<int, int> Pii; #define REP(i, n) for (int i = 0; i < (n); ++i) #define REP3(i, m, n) for (int i = (m); (i) < int(n); ++ (i)) #define rep(i,a,b) for(int i=(int)(a);i<(int)(b);i++) #define ALL(x) begin(x), end(x) #define rrep(i,a,b) for(int i=a;i>=b;i--) #define fore(i,a) for(auto &i:a) #define all(s) (s).begin(),(s).end() #define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i) #define drep(i, n) drep2(i, n, 0) #define rever(vec) reverse(vec.begin(), vec.end()) #define sor(vec) sort(vec.begin(), vec.end()) #define fi first #define FOR_(n) for (ll _ = 0; (_) < (ll)(n); ++(_)) #define FOR(i, n) for (ll i = 0; (i) < (ll)(n); ++(i)) #define se second #define pb push_back #define P pair<ll,ll> #define PQminll priority_queue<ll, vector<ll>, greater<ll>> #define PQmaxll priority_queue<ll,vector<ll>,less<ll>> #define PQminP priority_queue<P, vector<P>, greater<P>> #define PQmaxP priority_queue<P,vector<P>,less<P>> #define NP next_permutation //const ll mod = 1000000009; const ll mod = 998244353; //const ll mod = 1000000007; const ll inf = 4100000000000000000ll; const ld eps = ld(0.00000000001); static const long double pi = 3.141592653589793; template<class T>void vcin(vector<T> &n){for(int i=0;i<int(n.size());i++) cin>>n[i];} template<class T,class K>void vcin(vector<T> &n,vector<K> &m){for(int i=0;i<int(n.size());i++) cin>>n[i]>>m[i];} template<class T>void vcout(vector<T> &n){for(int i=0;i<int(n.size());i++){cout<<n[i]<<" ";}cout<<endl;} template<class T>void vcin(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cin>>n[i][j];}}} template<class T>void vcout(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cout<<n[i][j]<<" ";}cout<<endl;}cout<<endl;} void yes(bool a){cout<<(a?"yes":"no")<<endl;} void YES(bool a){cout<<(a?"YES":"NO")<<endl;} void Yes(bool a){cout<<(a?"Yes":"No")<<endl;} void possible(bool a){ cout<<(a?"possible":"impossible")<<endl; } void Possible(bool a){ cout<<(a?"Possible":"Impossible")<<endl; } void POSSIBLE(bool a){ cout<<(a?"POSSIBLE":"IMPOSSIBLE")<<endl; } #define FOR_R(i, n) for (ll i = (ll)(n)-1; (i) >= 0; --(i)) template<class T>auto min(const T& a){ return *min_element(all(a)); } template<class T>auto max(const T& a){ return *max_element(all(a)); } template<class T,class F>void print(pair<T,F> a){cout<<a.fi<<" "<<a.se<<endl;} template<class T>bool chmax(T &a,const T b) { if (a<b) { a=b; return 1; } return 0;} template<class T>bool chmin(T &a,const T b) { if (b<a) { a=b; return 1; } return 0;} template<class T> void ifmin(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}} template<class T> void ifmax(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}} ll fastgcd(ll u,ll v){ll shl=0;while(u&&v&&u!=v){bool eu=!(u&1);bool ev=!(v&1);if(eu&&ev){++shl;u>>=1;v>>=1;}else if(eu&&!ev){u>>=1;}else if(!eu&&ev){v>>=1;}else if(u>=v){u=(u-v)>>1;}else{ll tmp=u;u=(v-u)>>1;v=tmp;}}return !u?v<<shl:u<<shl;} ll modPow(ll a, ll n, ll mod) { if(mod==1) return 0;ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; } vector<ll> divisor(ll x){ vector<ll> ans; for(ll i = 1; i * i <= x; i++){ if(x % i == 0) {ans.push_back(i); if(i*i!=x){ ans.push_back(x / ans[i]);}}}sor(ans); return ans; } ll pop(ll x){return __builtin_popcountll(x);} ll poplong(ll x){ll y=-1;while(x){x/=2;y++;}return y;} P hyou(P a){ll x=fastgcd(abs(a.fi),abs(a.se));a.fi/=x;a.se/=x;if(a.se<0){a.fi*=-1;a.se*=-1;}return a;} P Pplus(P a,P b){ return hyou({a.fi*b.se+b.fi*a.se,a.se*b.se});} P Ptimes(P a,ll b){ return hyou({a.fi*b,a.se});} P Ptimes(P a,P b){ return hyou({a.fi*b.fi,a.se*b.se});} P Pminus(P a,P b){ return hyou({a.fi*b.se-b.fi*a.se,a.se*b.se});} P Pgyaku(P a){ return hyou({a.se,a.fi});} template<class T> struct Sum{ vector<T> data; Sum(const vector<T>& v):data(v.size()+1){ for(ll i=0;i<v.size();i++) data[i+1]=data[i]+v[i]; } T get(ll l,ll r) const { return data[r]-data[l]; } }; template<class T> struct Sum2{ vector<vector<T>> data; Sum2(const vector<vector<T>> &v):data(v.size()+1,vector<T>(v[0].size()+1)){ for(int i=0;i<v.size();i++) for(int j=0;j<v[i].size();j++) data[i+1][j+1]=data[i][j+1]+v[i][j]; for(int i=0;i<v.size();i++) for(int j=0;j<v[i].size();j++) data[i+1][j+1]+=data[i+1][j]; } T get(ll x1,ll y1,ll x2,ll y2) const { return data[x2][y2]+data[x1][y1]-data[x1][y2]-data[x2][y1]; } }; void cincout(){ ios::sync_with_stdio(false); std::cin.tie(nullptr); cout<< fixed << setprecision(15); } struct segtree{ ll n; vector<ll> node; segtree(ll N){ n=1; while(n<N) n*=2; node.resize(2*n); } void add(int x,int y){ x+=n; while(x){ node[x]+=y; x/=2; } } ll prod(ll l,ll r,ll a,ll b,ll k){ if(r<=a||b<=l) return 0; if(l<=a&&b<=r) return node[k]; return prod(l,r,a,(a+b)/2,2*k)+prod(l,r,(a+b)/2,b,2*k+1); } ll prod(ll l,ll r){ return prod(l,r,0,n,1); } }; ll solve(ll n,ll d,ll m,vector<ll> a,vector<ll> b){ for(int i=0;i<n;i++){ ll x=a[i]+b[i]; ll y=a[i]-b[i]+m; a[i]=x; b[i]=y; } ll ans=0; segtree seg(3*m+100); vector<vector<ll>> iv; for(int i=0;i<n;i++){ iv.pb({a[i],0,b[i]}); iv.pb({a[i]+d,1,max(b[i]-d,0ll),b[i]+d,b[i]}); } sor(iv); for(auto e:iv){ if(e[1]==0){ seg.add(e[2],1); } else{ ans+=seg.prod(e[2],e[3]+1); seg.add(e[4],-1); } } return ans-n; } int main() { cincout(); ll b,n,d,m; cin>>b>>n>>d>>m; if(b==1){ vector<ll> a(n); vcin(a); sor(a); a.pb(inf); ll ok=0; ll ans=0; for(int i=0;i<n;i++){ while(abs(a[i]-a[ok+1])<=d) ok++; ans+=ok-i; } cout<<ans<<endl; return 0; } if(b==2){ vector<ll> a(n),b(n); for(int i=0;i<n;i++){ cin>>a[i]>>b[i]; ll x=a[i]+b[i]; ll y=a[i]-b[i]+m; a[i]=x; b[i]=y; } ll ans=0; segtree seg(3*m+100); vector<vector<ll>> iv; for(int i=0;i<n;i++){ iv.pb({a[i],0,b[i]}); iv.pb({a[i]+d,1,max(b[i]-d,0ll),b[i]+d,b[i]}); } sor(iv); for(auto e:iv){ if(e[1]==0){ seg.add(e[2],1); } else{ ans+=seg.prod(e[2],e[3]+1); seg.add(e[4],-1); } } cout<<ans-n<<endl; } if(b==3){ vector<ll> a(n),b(n),c(n); for(int i=0;i<n;i++) cin>>a[i]>>b[i]>>c[i]; ll ans=0; vector<vector<P>> dk(m+1); for(int i=0;i<n;i++) dk[c[i]].pb({a[i],b[i]}); for(int i=1;i<=m;i++){ for(int j=i+1;j<=m;j++){ if(abs(i-j)>d) continue; { vector<ll> A,B; for(auto e:dk[j]){ A.pb(e.fi); B.pb(e.se); } for(auto e:dk[i]){ A.pb(e.fi); B.pb(e.se); } ans+=solve(ll(A.size()),d-abs(i-j),m,A,B); } { vector<ll> A,B; for(auto e:dk[i]){ A.pb(e.fi); B.pb(e.se); } ans-=solve(ll(A.size()),d-abs(i-j),m,A,B); } { vector<ll> A,B; for(auto e:dk[j]){ A.pb(e.fi); B.pb(e.se); } ans-=solve(ll(A.size()),d-abs(i-j),m,A,B); } } } for(int i=1;i<=m;i++){ for(int j=i;j<=i;j++){ if(abs(i-j)>d) continue; { vector<ll> A,B; for(auto e:dk[i]){ A.pb(e.fi); B.pb(e.se); } ans+=solve(ll(A.size()),d-abs(i-j),m,A,B); } } } cout<<ans<<endl; } }
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