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Submission #731185

# Submission time Handle Problem Language Result Execution time Memory
731185 2023-04-27T06:50:05 Z Huseyn123 Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 737 ms 74916 KB 
#include <bits/stdc++.h>
#define MAX 300001
#define INF INT_MAX
#define MOD 1000000007
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ins insert
#define ff first
#define ss second
#define gett(x,m) get<m>(x)
#define all(a) a.begin(),a.end()
#define lb(a,b) lower_bound(all(a),b)
#define ub(a,b) upper_bound(all(a),b)
#define sortv(a) sort(all(a))
#define sorta(a,sz) sort(a,a+sz)
#define inputar(a,b){\
    for(int i=0;i<b;i++){\
        cin >> a[i];\
    }\
}
#define inputvec(a,b){\
    for(int i=0;i<b;i++){\
        ll num;\
        cin >> num;\
        a.pb(num);\
    }\
}
#define outputar(a,b){\
    for(int i=0;i<b;i++){\
        cout << a[i] << " ";\
    }\
    cout << "\n";\
}
#define outputvec(a){\
    for(auto x:a){\
        cout << x << " ";\
    }\
    cout << "\n";\
}
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef tuple<ll,ll,ll> tll;
typedef pair<ll,ll> pll;
typedef double db;
typedef long double ldb;
inline void USACO(string filename){
  freopen((filename+".in").c_str(),"r",stdin);
  freopen((filename+".out").c_str(),"w",stdout);
}
ll n,q,t=1,m,n2,m2,k,cnt=0,a[MAX],b[MAX],d[MAX],d2[MAX],x,y,z,x2,y2,z2,res1=0,cnt1,cnt2,cnt3;
ll c[1001][1001];
ll c2[1001][1001];
ll fact[MAX];
ll inv_fact[MAX];
//char c;
string str[MAX];
string s1,s2;
const int mod = 998244353;
ll modmul(ll x,ll y,ll md){
    if(y==1){
        return x;
    }
    if(y%2){
        return (x+modmul(x,y-1,md))%md;
    }
    else{
        return (modmul((x+x)%md,y/2,md))%md;
    }
}
ll powmod(ll x,ll y,ll md){
    x%=md;
    if(x==0){
        return 0;
    }
    ll res=1;
    while(y){
        if(y%2==1){
            res*=x;
            res%=md;
        }
        x*=x;
        x%=md;
        y/=2;
    }
    return res;
}
ll pow2(ll x,ll y){
    if(x==0){
        return 0;
    }
    ll res=1;
    while(y>0){
        if(y%2==1){
            if(res>=1e18/x){
                res=1e18;
            }
            else{
                res*=x;
            }
        }
        if(x>=1e18/x){
            x=1e18;
        }
        else{
            x*=x;
        }
        y/=2;
    }
    return res;
}
ll inv(ll n,ll md){
    return powmod(n,md-2,md);
}
ll nCkm(ll n,ll k,ll md){
    if(n-k<0){
        return 0;
    }
    return fact[n]*inv_fact[k]%md*inv_fact[n-k]%md;
}
ll nCk(ll x,ll y){
    if(x<y){
        return 0;
    }
    ll res=1;
    if(y>x-y){
        for(int i=y+1;i<=x;i++){
            res*=i;
        }
        for(int i=2;i<=x-y;i++){
            res/=i;
        }
    }
    else{
        for(int i=x-y+1;i<=x;i++){
            res*=i;
        }
        for(int i=2;i<=y;i++){
            res/=i;
        }
    }
    return res;
}
ll countbits(ll x){
    ll cnt=0;
    while(x){
        cnt+=x&1;
        x>>=1;
    }
    return cnt;
}
ll gcd(ll x,ll y){
    if(y==0){
        return x;
    }
    return gcd(y,x%y);
}
ll lcm(ll x,ll y){
    return x*y/gcd(x,y);
}
bool alpha(char c1,char c2){
    ll h1,h2;
    if(c1>='a'){
        h1=c1-'a';
    }
    else{
        h1=c1-'A';
    }
    if(c2>='a'){
        h2=c2-'a';
    }
    else{
        h2=c2-'A';
    }
    if(h1==h2){
        return c1<c2;
    }
    else{
        return h1<h2;
    }
}
ll dx[4]={1,0,0,-1};
ll dy[4]={0,1,-1,0};
struct custom_hash {
   static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};
struct data{
    ll dt[2][2];
};
data f(data x,data y){
    data res;
    res.dt[0][0]=res.dt[0][1]=res.dt[1][0]=res.dt[1][1]=INF;
    for(int i=0;i<2;i++){
        for(int j=0;j<2;j++){
            ll h=x.dt[i][0];
            if(y.dt[1][j]<=INF-h){
                h+=y.dt[1][j];
            }
            else{
                h=INF;
            }
            res.dt[i][j]=min(res.dt[i][j],h);
            h=x.dt[i][1];
            if(y.dt[0][j]<=INF-h){
                h+=y.dt[0][j];
            }
            else{
                h=INF;
            }
            res.dt[i][j]=min(res.dt[i][j],h);
            h=x.dt[i][1];
            if(y.dt[1][j]<=INF-h){
                h+=y.dt[1][j];
            }
            else{
                h=INF;
            }
            res.dt[i][j]=min(res.dt[i][j],h);
        }
    }
    return res;
}
struct segtree{
    int size;
    vector<data> dp;
    void build(vector<ll> &a,int x,int lx,int rx){
        if(rx-lx==1){
            if(lx<(int)a.size()){
                dp[x].dt[1][1]=a[lx];
                dp[x].dt[0][0]=0;
            }
            return;
        }
        int m=(lx+rx)/2;
        build(a,2*x+1,lx,m);
        build(a,2*x+2,m,rx);
        dp[x]=f(dp[2*x+1],dp[2*x+2]);
    }
    void build(vector<ll> &a){
        build(a,0,0,size);
    }
    void init(int n){
        size=1;
        while(size<n){
            size*=2;
        }
        data h;
        h.dt[0][1]=h.dt[1][0]=INF;
        h.dt[0][0]=h.dt[1][1]=INF;
        dp.assign(2*size,h);
    }
    data get_res(int l,int r,int x,int lx,int rx){
        if(lx>=r || rx<=l){
            data h;
            h.dt[0][1]=h.dt[1][0]=0;
            h.dt[0][0]=h.dt[1][1]=INF;
            return h;
        }
        if(lx>=l && rx<=r){
            //cout << lx << " " << rx << " " << dp[x].dt[0][0] << " " << dp[x].dt[0][1] << " " << dp[x].dt[1][0] << " " << dp[x].dt[1][1]  << "\n";
            return dp[x];
        }
        data s1,s2;
        int m=(lx+rx)/2;
        s1=get_res(l,r,2*x+1,lx,m);
        s2=get_res(l,r,2*x+2,m,rx);
        data h=f(s1,s2);
        //cout << lx << " " << rx << " " << h.dt[0][0] << " " << h.dt[0][1]  << " " << h.dt[1][0] << " " << h.dt[1][1] << "\n";
        return f(s1,s2);
    }
    data get_res(int l,int r){
        return get_res(l,r,0,0,size);
    }
    void set(int i,int v,int x,int lx,int rx){
        if(rx-lx==1){
            dp[x].dt[1][1]=v;
            dp[x].dt[0][0]=0;
            return;
        }
        int m=(lx+rx)/2;
        if(i<m){
            set(i,v,2*x+1,lx,m);
        }
        else{
            set(i,v,2*x+2,m,rx);
        }
        dp[x]=f(dp[2*x+1],dp[2*x+2]);
        //cout << lx << " " << rx << " " << dp[x].dt[0][0] << " " << dp[x].dt[0][1] << " " << dp[x].dt[1][0] << " " << dp[x].dt[1][1]  << "\n";
    }
    void set(int i,int v){
        set(i,v,0,0,size);
    }
};
struct dsu{
    vector<ll> e;
    void init(int n){
        e.resize(n+1,-1);
    }
    int get(int x){
        if(e[x]<0){
            return x;
        }
        else{
            return e[x]=get(e[x]);
        }
    }
    int size(int x){
        return -e[get(x)];
    }
    bool same_set(int x,int y){
        return (get(x)==get(y));
    }
    bool unite(int x,int y){
        x=get(x);
        y=get(y);
        if(x==y){
            return false;
        }
        if(e[x]>e[y]){
            swap(x,y);
        }
        e[x]+=e[y];
        e[y]=x;
        return true;
    }
};
set<pll> st;
bool check(pll p){
    if(st.size()>0){
        auto it=st.upper_bound(mp(p.ss+1,0));
        if(it!=st.begin()){
            --it;
            if((*it).ss>=p.ff){
                return true;
            }
        }
    }
    return false;
}
void solve(){
    cin >> n;
    for(int i=1;i<=n;i++){
        cin >> a[i] >> b[i];
    }
    ll j=1;
    bool ok=false;
    map<pll,int> c;
    for(int i=1;i<=n;i++){
        while(j<=n && !ok){
            c[mp(a[j],b[j])]++;
            ok=check(mp(a[j],b[j]));
            st.ins(mp(a[j],b[j]));
            j++;
        }
        if(!ok){
            d[i]=INF;
        }
        else{
            d[i]=j-1;
        }
        c[mp(a[i],b[i])]--;
        if(c[mp(a[i],b[i])]==0){
            st.erase(mp(a[i],b[i]));
            if(check(mp(a[i],b[i]))){
                auto it=st.upper_bound(mp(b[i]+1,0));
                --it;
                pll p=*it;
                st.erase(p);
                if(check(p)==false && c[p]==1){
                    ok=false;
                }
                st.ins(p);
            }
        }
        else if(c[mp(a[i],b[i])]==1){
            ok=false;
        }
    }
    ll h,h1;
    h=1;
    h1=0;
    while(h<n){
        h*=2;
        h1++;
    }
    ll sp[n+1][h1+1];
    for(int i=1;i<=n;i++){
        sp[i][0]=d[i];
    }
    for(int j=1;j<=h1;j++){
        for(int i=1;i<=n;i++){
            if(sp[i][j-1]==INF){
                sp[i][j]=INF;
            }
            else{
                sp[i][j]=sp[sp[i][j-1]][j-1];
            }
        }
    }
    cin >> q;
    for(int i=0;i<q;i++){
        cin >> x >> y;
        ll res=1;
        ll h2=h;
        for(int j=h1;j>=0;j--){
            if(sp[x][j]<=y){
                x=sp[x][j];
                res+=h2;
            }
            h2/=2;
        }
        cout << res << "\n";
    }
}
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    //USACO("poetry");
    //freopen("input.txt","r",stdin);
    //cin >> t;
    ll cnt1=1;
    while(t--){
        solve();
        cnt1++;
    }
}
/*
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
ifstream fin("template.in");
ofstream fout("template.out");
*/
/*
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
ifstream fin("template.in");
ofstream fout("template.out");
*/
/*
ll b[51][51];
b[0][0] = 1;
    for (int n = 1; n <= 50; ++n){
        b[n][0] = b[n][n] = 1;
        for (int k = 1; k < n; ++k)
            b[n][k] = b[n - 1][k - 1] + b[n - 1][k];
    }
*/

Compilation message

Main.cpp: In member function 'data segtree::get_res(int, int, int, int, int)':
Main.cpp:278:14: warning: variable 'h' set but not used [-Wunused-but-set-variable]
  278 |         data h=f(s1,s2);
      |              ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 328 ms 54612 KB Output is correct
2 Correct 283 ms 57560 KB Output is correct
3 Correct 283 ms 57772 KB Output is correct
4 Correct 301 ms 58188 KB Output is correct
5 Correct 306 ms 60500 KB Output is correct
6 Correct 95 ms 44360 KB Output is correct
7 Correct 111 ms 45004 KB Output is correct
8 Correct 111 ms 45268 KB Output is correct
9 Correct 118 ms 46216 KB Output is correct
10 Correct 123 ms 44908 KB Output is correct
11 Correct 561 ms 71080 KB Output is correct
12 Correct 558 ms 67360 KB Output is correct
13 Correct 515 ms 67184 KB Output is correct
14 Correct 510 ms 60820 KB Output is correct
15 Correct 496 ms 60820 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 101 ms 46824 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 10736 KB Output is correct
2 Correct 10 ms 10700 KB Output is correct
3 Correct 11 ms 10836 KB Output is correct
4 Correct 11 ms 10860 KB Output is correct
5 Correct 10 ms 10708 KB Output is correct
6 Correct 8 ms 10508 KB Output is correct
7 Correct 8 ms 10452 KB Output is correct
8 Correct 8 ms 10452 KB Output is correct
9 Correct 10 ms 10540 KB Output is correct
10 Correct 9 ms 10452 KB Output is correct
11 Correct 12 ms 11092 KB Output is correct
12 Correct 11 ms 10964 KB Output is correct
13 Correct 11 ms 11092 KB Output is correct
14 Correct 12 ms 10836 KB Output is correct
15 Correct 13 ms 10836 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 8 ms 10452 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 10736 KB Output is correct
2 Correct 10 ms 10700 KB Output is correct
3 Correct 11 ms 10836 KB Output is correct
4 Correct 11 ms 10860 KB Output is correct
5 Correct 10 ms 10708 KB Output is correct
6 Correct 8 ms 10508 KB Output is correct
7 Correct 8 ms 10452 KB Output is correct
8 Correct 8 ms 10452 KB Output is correct
9 Correct 10 ms 10540 KB Output is correct
10 Correct 9 ms 10452 KB Output is correct
11 Correct 12 ms 11092 KB Output is correct
12 Correct 11 ms 10964 KB Output is correct
13 Correct 11 ms 11092 KB Output is correct
14 Correct 12 ms 10836 KB Output is correct
15 Correct 13 ms 10836 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 8 ms 10452 KB Output is correct
18 Correct 72 ms 13444 KB Output is correct
19 Correct 65 ms 13100 KB Output is correct
20 Correct 70 ms 13516 KB Output is correct
21 Correct 70 ms 13260 KB Output is correct
22 Correct 66 ms 13320 KB Output is correct
23 Correct 63 ms 12928 KB Output is correct
24 Correct 79 ms 13036 KB Output is correct
25 Correct 71 ms 13064 KB Output is correct
26 Correct 64 ms 13156 KB Output is correct
27 Correct 60 ms 12856 KB Output is correct
28 Correct 49 ms 13096 KB Output is correct
29 Correct 55 ms 13128 KB Output is correct
30 Correct 53 ms 13216 KB Output is correct
31 Correct 50 ms 13052 KB Output is correct
32 Correct 53 ms 12984 KB Output is correct
33 Correct 5 ms 9724 KB Output is correct
34 Correct 56 ms 12872 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 321 ms 56652 KB Output is correct
2 Correct 282 ms 59468 KB Output is correct
3 Correct 287 ms 56012 KB Output is correct
4 Correct 266 ms 55660 KB Output is correct
5 Correct 271 ms 56908 KB Output is correct
6 Correct 93 ms 44744 KB Output is correct
7 Correct 97 ms 44380 KB Output is correct
8 Correct 104 ms 44648 KB Output is correct
9 Correct 108 ms 44372 KB Output is correct
10 Correct 137 ms 47164 KB Output is correct
11 Correct 525 ms 66820 KB Output is correct
12 Correct 633 ms 72448 KB Output is correct
13 Correct 633 ms 66676 KB Output is correct
14 Correct 471 ms 59760 KB Output is correct
15 Correct 601 ms 65312 KB Output is correct
16 Correct 5 ms 9760 KB Output is correct
17 Correct 103 ms 45232 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 328 ms 54612 KB Output is correct
2 Correct 283 ms 57560 KB Output is correct
3 Correct 283 ms 57772 KB Output is correct
4 Correct 301 ms 58188 KB Output is correct
5 Correct 306 ms 60500 KB Output is correct
6 Correct 95 ms 44360 KB Output is correct
7 Correct 111 ms 45004 KB Output is correct
8 Correct 111 ms 45268 KB Output is correct
9 Correct 118 ms 46216 KB Output is correct
10 Correct 123 ms 44908 KB Output is correct
11 Correct 561 ms 71080 KB Output is correct
12 Correct 558 ms 67360 KB Output is correct
13 Correct 515 ms 67184 KB Output is correct
14 Correct 510 ms 60820 KB Output is correct
15 Correct 496 ms 60820 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 101 ms 46824 KB Output is correct
18 Correct 12 ms 10736 KB Output is correct
19 Correct 10 ms 10700 KB Output is correct
20 Correct 11 ms 10836 KB Output is correct
21 Correct 11 ms 10860 KB Output is correct
22 Correct 10 ms 10708 KB Output is correct
23 Correct 8 ms 10508 KB Output is correct
24 Correct 8 ms 10452 KB Output is correct
25 Correct 8 ms 10452 KB Output is correct
26 Correct 10 ms 10540 KB Output is correct
27 Correct 9 ms 10452 KB Output is correct
28 Correct 12 ms 11092 KB Output is correct
29 Correct 11 ms 10964 KB Output is correct
30 Correct 11 ms 11092 KB Output is correct
31 Correct 12 ms 10836 KB Output is correct
32 Correct 13 ms 10836 KB Output is correct
33 Correct 5 ms 9684 KB Output is correct
34 Correct 8 ms 10452 KB Output is correct
35 Correct 72 ms 13444 KB Output is correct
36 Correct 65 ms 13100 KB Output is correct
37 Correct 70 ms 13516 KB Output is correct
38 Correct 70 ms 13260 KB Output is correct
39 Correct 66 ms 13320 KB Output is correct
40 Correct 63 ms 12928 KB Output is correct
41 Correct 79 ms 13036 KB Output is correct
42 Correct 71 ms 13064 KB Output is correct
43 Correct 64 ms 13156 KB Output is correct
44 Correct 60 ms 12856 KB Output is correct
45 Correct 49 ms 13096 KB Output is correct
46 Correct 55 ms 13128 KB Output is correct
47 Correct 53 ms 13216 KB Output is correct
48 Correct 50 ms 13052 KB Output is correct
49 Correct 53 ms 12984 KB Output is correct
50 Correct 5 ms 9724 KB Output is correct
51 Correct 56 ms 12872 KB Output is correct
52 Correct 321 ms 56652 KB Output is correct
53 Correct 282 ms 59468 KB Output is correct
54 Correct 287 ms 56012 KB Output is correct
55 Correct 266 ms 55660 KB Output is correct
56 Correct 271 ms 56908 KB Output is correct
57 Correct 93 ms 44744 KB Output is correct
58 Correct 97 ms 44380 KB Output is correct
59 Correct 104 ms 44648 KB Output is correct
60 Correct 108 ms 44372 KB Output is correct
61 Correct 137 ms 47164 KB Output is correct
62 Correct 525 ms 66820 KB Output is correct
63 Correct 633 ms 72448 KB Output is correct
64 Correct 633 ms 66676 KB Output is correct
65 Correct 471 ms 59760 KB Output is correct
66 Correct 601 ms 65312 KB Output is correct
67 Correct 5 ms 9760 KB Output is correct
68 Correct 103 ms 45232 KB Output is correct
69 Correct 572 ms 60484 KB Output is correct
70 Correct 593 ms 63064 KB Output is correct
71 Correct 597 ms 58932 KB Output is correct
72 Correct 574 ms 61640 KB Output is correct
73 Correct 586 ms 60860 KB Output is correct
74 Correct 397 ms 51100 KB Output is correct
75 Correct 369 ms 48236 KB Output is correct
76 Correct 385 ms 51424 KB Output is correct
77 Correct 325 ms 48140 KB Output is correct
78 Correct 335 ms 48760 KB Output is correct
79 Correct 737 ms 74916 KB Output is correct
80 Correct 664 ms 70104 KB Output is correct
81 Correct 593 ms 69708 KB Output is correct
82 Correct 589 ms 62808 KB Output is correct
83 Correct 557 ms 61900 KB Output is correct
84 Correct 5 ms 9684 KB Output is correct
85 Correct 161 ms 48200 KB Output is correct