oj.uz

Submission #883848

# Submission time Handle Problem Language Result Execution time Memory
883848 2023-12-06T07:54:40 Z vjudge1 Passport (JOI23_passport) C++17
48 / 100
 883 ms 75144 KB 
#include <bits/stdc++.h>

using namespace std;


#define lli long long int
#define MP make_pair
#define pb push_back
#define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
}


const double EPS = 0.00001;
const int INF = 1e9+500;
const int N = 2505;
const int ALPH = 26;
const int LGN = 25;
const int MOD = 1e9+7;
int n,m,q;

vector<int> que;
vector<int> dp;
int ans[N][N];

struct SegTree {
    vector<int> data;
    int sz;
    SegTree(int sz) {
        this->sz = sz;
        data.assign(4*(sz + 5), INF);
    }
    void reset() {
        data.assign(4*(sz + 5), INF);
    }
    void update(int tl, int tr, int v, int ind, int val) {
        if(tl == tr) {
            data[v] = val;
            return;
        }
        int tm = (tl + tr) >> 1;
        if(ind <= tm) {
            update(tl, tm, v*2, ind, val);
        }
        else {
            update(tm + 1, tr, v*2+1, ind, val);
        }
        data[v] = min(data[v*2], data[v*2+1]);
    }
    void update(int ind, int val) {
        update(0, sz, 1, ind, val);
    }

    int query(int tl, int tr, int v, int l, int r) {
        if(tl >= l && tr <= r) {
            return data[v];
        }
        if(tl > r || tr < l) {
            return INF;
        }
        int tm = (tl + tr) >> 1;
        return min(query(tl, tm, v*2, l, r), query(tm + 1, tr, v*2+1, l, r));
    }
    int query(int l, int r) {
        return query(0, sz, 1, l, r);
    }
}; 

struct Inter {
    int l, r, ind;
    Inter(int l, int r, int i) {
        this->l = l;
        this->r = r;
        this->ind = i;
    }
    Inter() {
        l = 0; r = 0; ind = 0;
    }
    const bool operator<(const Inter &oth) {
        return r - l < oth.r - oth.l;
    }
    void input(int i) {
        cin>>l>>r;
        ind = i;
    }
    void print() {
        cout<<"INTERVAL\n";
        cout<<"l:"<<l<<" r:"<<r<<" ind:"<<ind<<"\n";
    }
};
vector<Inter> inter;
SegTree *segl, *segr, *segdp;

int f(int l, int r) {
    if(ans[l][r] != -1) return ans[l][r];
    ans[l][r] = INF;
    ans[l][r] = min(ans[l][r], segdp->query(l,r));
    
    int mxl = segl->query(l,r);
    int mxr = -segr->query(l,r);
    // cout<<"l:"<<l<<" r:"<<r<<"\n";
    // cout<<"segdp:"<<segdp->query(l,r)<<"\n";
    // cout<<"mxl:"<<mxl<<" mxr:"<<mxr<<"\n";
    if(mxr > r) {
        ans[l][r] = min(ans[l][r], f(l, mxr) + 1);
    } 
    if(mxl < l) {
        ans[l][r] = min(ans[l][r], f(mxl, r) + 1);
    }
    return ans[l][r];
}

void prec() {
    segdp = new SegTree(n); //min
    segl = new SegTree(n); //min
    segr = new SegTree(n); //max
    dp.assign(n+3, 0);
    sort(inter.rbegin(), inter.rend());

    for(auto c : inter) {
        segl->update(c.ind, c.l);
        segr->update(c.ind, -c.r);
    }
    for(int i = 0; i<=n; i++) {
        for(int j = 0; j<=n; j++) {
            ans[i][j] = -1;
        }
    }
    ans[1][n] = 0;
    
    for(auto c : inter) {
        //c.print();
        dp[c.ind] = f(c.l, c.r) + 1;
        segdp->update(c.ind, dp[c.ind]);

    }
}

inline void solve() {
    cin>>n;
    inter.assign(n, Inter());
    REP(i,n) {
        inter[i].input(i + 1);
    }
    cin>>q;
    que.assign(q+3, 0);
    REP(i,q) {
        cin>>que[i + 1];
    }
    prec();
    for(int i = 1; i<=q; i++) {
        auto cur = que[i];
        if(dp[cur] >= INF) dp[cur] = -1;
        cout<<dp[cur]<<"\n";
    }
}
 
signed main() {

    //fastio();
    int test = 1;
    //cin>>test;
    while(test--) {
        solve();
    }
    
}

Compilation message

passport.cpp: In function 'void solve()':
passport.cpp:9:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    9 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
passport.cpp:145:5: note: in expansion of macro 'REP'
  145 |     REP(i,n) {
      |     ^~~
passport.cpp:9:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    9 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
passport.cpp:150:5: note: in expansion of macro 'REP'
  150 |     REP(i,q) {
      |     ^~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Runtime error 194 ms 75144 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 436 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4444 KB Output is correct
13 Correct 2 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 3 ms 4444 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 436 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4444 KB Output is correct
13 Correct 2 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 3 ms 4444 KB Output is correct
16 Correct 8 ms 23388 KB Output is correct
17 Correct 151 ms 24860 KB Output is correct
18 Correct 71 ms 24924 KB Output is correct
19 Correct 10 ms 24480 KB Output is correct
20 Correct 883 ms 25432 KB Output is correct
21 Correct 216 ms 25176 KB Output is correct
22 Correct 5 ms 24924 KB Output is correct
23 Correct 7 ms 24920 KB Output is correct
24 Correct 6 ms 24920 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 436 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4444 KB Output is correct
13 Correct 2 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 3 ms 4444 KB Output is correct
16 Correct 8 ms 23388 KB Output is correct
17 Correct 151 ms 24860 KB Output is correct
18 Correct 71 ms 24924 KB Output is correct
19 Correct 10 ms 24480 KB Output is correct
20 Correct 883 ms 25432 KB Output is correct
21 Correct 216 ms 25176 KB Output is correct
22 Correct 5 ms 24924 KB Output is correct
23 Correct 7 ms 24920 KB Output is correct
24 Correct 6 ms 24920 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 8 ms 24152 KB Output is correct
28 Correct 145 ms 25180 KB Output is correct
29 Correct 872 ms 25444 KB Output is correct
30 Correct 216 ms 25284 KB Output is correct
31 Correct 6 ms 24152 KB Output is correct

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Runtime error 194 ms 75144 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -