Submission #33336

#	Time	Username	Problem	Language	Result	Execution time	Memory
33336		imaxblue	Cake (CEOI14_cake)	C++14	100 / 100	1889 ms	22560 KiB

cake

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pii pair<int, int>
#define p3i pair<pii, int>
#define pll pair<ll, ll>
#define p3l pair<pll, ll>
#define lseg L, (L+R)/2, N*2+1
#define rseg (L+R)/2+1, R, N*2+2
#define ub upper_bound
#define lb lower_bound
#define pq priority_queue
#define MN 1000000007
#define fox(k, x) for (int k=0; k<x; ++k)
#define fox1(k, x) for (int k=1; k<=x; ++k)
#define foxr(k, x) for (int k=x-1; k>=0; --k)
#define fox1r(k, x) for (int k=x; k>0; --k)
#define ms multiset
#define flood(x) memset(x, 0x3f3f3f3f, sizeof x)
#define drain(x) memset(x, 0, sizeof x)
#define rng() (rand() >> 3)*rand()

int n, s, q, gl, gr, t, k, x, p, z;
int seg[2][1000005], a[250005];
char ch;
vector<pii> v;
map<int, int> r; map<int, int>::iterator i;
void up(int L, int R, int N){
    if (L>gl || R<gl) return;
    if (L==R){
        seg[t][N]=x;
        return;
    }
    up(lseg); up(rseg);
    seg[t][N]=max(seg[t][N*2+1], seg[t][N*2+2]);
}
int query(int L, int R, int N){
    if (L==R){
        return L-1;
    }
    if (seg[t][N*2+1]>x) query(lseg);
    else query(rseg);
}
void change(int P){
    if (P<s){
        gl=s-P; x=a[P]; t=0;
        up(1, s+1, 0);
    }
    if (P>s){
        gl=P-s; x=a[P]; t=1;
        up(1, n-s, 0);
    }
}
int hi(int L, int R, int N){
    if (L>gr) return 0;
    if (R<=gr) return seg[t][N];
    return max(hi(lseg), hi(rseg));
}
int main(){
    //freopen("new.txt", "w", stdout);

    scanf("%i%i",&n, &s); --s;
    gl=s+1; x=(1 << 30); t=0;
    up(1, s+1, 0);
    gl=n-s; x=(1 << 30); t=1;
    up(1, n-s, 0);
    fox(l, n){
        scanf("%i", &a[l]);
        change(l);
        r[a[l]]=l;
    }
    scanf("%i", &q);
    //cout << q << endl;
    int c=0;
    fox(l, q){
        //cout << "*";
        scanf(" %c%i", &ch, &p); --p;
        if (ch=='E'){
            scanf("%i", &z);
            r.erase(a[p]);
            i=r.end();
            fox(l, z){
                --i;
                if (i==--r.lb(a[p])) return 1;
            }
            k=a[p]=i->x+1;
            change(p);
            //cout << "*" << k << endl;
            //continue;
            v.clear();
            for (++i, ++k; i!=r.end(); ++i, ++k){
                //cout << i->y << ' ';
                v.pb(mp(i->x, i->y));
                a[i->y]=k;
                change(i->y);
                //cout << "*";
            }
            //if (v.size()!=z-1) return 1;
            //cout << endl;
            fox(l, z-1){
                //cout << v[l].x << ":" << a[v[l].y] << ' ';
                r.erase(v[l].x);
            }
            fox(l, z-1){
                //cout << v[l].x << ":" << a[v[l].y] << ' ';
                r[a[v[l].y]]=v[l].y;
            }
            r[a[p]]=p;
            //cout << endl;
            //for (auto i:r) cout << i.x << ' '; cout << endl;
            //cout << p << ' ' << z << ' ' << r.size() << endl;
            //fox(l, 20) cout << a[l] << ' '; cout << endl;
        } else {
            //cout << p << ' ' << s << ' ';
            if (p==s){
                printf("0\n");
            } else if (p<s){
                t=0; gr=s-p; x=hi(1, s+1, 0);
                //cout << x << "*";
                t=1;
                printf("%i\n", s-p+query(1, n-s, 0));
            } else {
                t=1; gr=p-s; x=hi(1, n-s, 0);
                t=0;
                //cout << x << ' ';
                printf("%i\n", p-s+query(1, s+1, 0));

            }
            c++;
        }
        //if (c==112) while(1);
    }
    //cout << "*";
    return 0;
}

Compilation message (stderr)

cake.cpp: In function 'int query(int, int, int)':
cake.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
cake.cpp: In function 'int main()':
cake.cpp:66:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i%i",&n, &s); --s;
                         ^
cake.cpp:72:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%i", &a[l]);
                           ^
cake.cpp:76:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i", &q);
                    ^
cake.cpp:81:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %c%i", &ch, &p); --p;
                                ^
cake.cpp:83:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%i", &z);
                            ^

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50