oj.uz

Submission #992442

# Submission time Handle Problem Language Result Execution time Memory
992442 2024-06-04T12:59:41 Z 79brue Escape Route 2 (JOI24_escape2) C++17
54 / 100
 2000 ms 64648 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const ll INF = 1e18;

struct segTree{
    int minV[400002], minIdx[400002];

    void init(int i, int l, int r, int *A){
        if(l==r){
            minV[i] = A[l], minIdx[i] = l;
            return;
        }
        int m = (l+r)>>1;
        init(i*2, l, m, A);
        init(i*2+1, m+1, r, A);
        if(minV[i*2] <= minV[i*2+1]) minV[i] = minV[i*2], minIdx[i] = minIdx[i*2];
        else minV[i] = minV[i*2+1], minIdx[i] = minIdx[i*2+1];
    }

    pair<int, int> query(int i, int l, int r, int s, int e){
        if(r<s || e<l) return make_pair(INT_MAX, -1);
        if(s<=l && r<=e) return make_pair(minV[i], minIdx[i]);
        int m = (l+r)>>1;
        return min(query(i*2, l, m, s, e), query(i*2+1, m+1, r, s, e));
    }
} tree;

struct dat{
    ll x, y;
    dat(){}
    dat(ll x, ll y): x(x), y(y){}
    bool operator<(const dat &r)const{
        if(x != r.x) return x < r.x;
        return y > r.y;
    }
    bool operator<(const ll &r)const{
        return x < r;
    }
};

struct Query{
    int l, r, idx;
    Query(){}
    Query(int l, int r, int idx): l(l), r(r), idx(idx){}
};

int n, q, K; ll T;
dat arr[100002], arrRev[100002];
int S[100002], E[100002], sz[100002];

int nxtR[100002], dayR[100002], nxtL[100002], dayL[100002];
int nxtRsps[100002][20], dayRsps[100002][20], nxtLsps[100002][20], dayLsps[100002][20];

int recentL[100002], Lloc[100002], recentR[100002], Rloc[100002];
int qlx[500002], qld[500002], qrx[500002], qrd[500002], qlcnt, qrcnt;

vector<Query> queries[100002];
ll ans[300002];

int main(){
    scanf("%d %lld", &n, &T);
    for(int i=1; i<n; i++){
        int s;
        scanf("%d", &s);

        vector<dat> vec;
        vec.resize(s);
        for(int j=0; j<s; j++) scanf("%lld %lld", &vec[j].x, &vec[j].y);

        sort(vec.begin(), vec.end());

        vector<dat> vec2;
        for(int j=0; j<s; j++){
            while(!vec2.empty() && vec2.back().y >= vec[j].y) vec2.pop_back();
            vec2.push_back(vec[j]);
        }
        sz[i] = (int)vec2.size();

        S[i] = E[i-1] + 1, E[i] = S[i] + sz[i] - 1;
        for(int j=0; j<sz[i]; j++) arr[S[i]+j] = vec2[j];
        for(int j=S[i]; j<=E[i]; j++) arrRev[j] = dat(arr[j].y, arr[j].x);
    }
    tree.init(1, 1, n-1, sz);

    for(int d=1; d<=n-2; d++){
        for(int i=S[d]; i<=E[d]; i++){
            int L = S[d+1], R = E[d+1];
            if(arr[R].x >= arr[i].y) nxtR[i] = lower_bound(arr+L, arr+R+1, dat(arr[i].y, INF)) - arr;
            else nxtR[i] = L, dayR[i] = 1;
        }
    }
    for(int d=3; d<=n; d++){
        for(int i=S[d-1]; i<=E[d-1]; i++){
            int L = S[d-2], R = E[d-2];
            if(arrRev[L].x <= arrRev[i].y) nxtL[i] = upper_bound(arrRev+L, arrRev+R+1, dat(arrRev[i].y, -INF)) - arrRev - 1;
            else nxtL[i] = R, dayL[i] = 1;
        }
    }

    K = E[n-1];
    for(int i=1; i<=K; i++) nxtLsps[i][0] = nxtL[i], nxtRsps[i][0] = nxtR[i], dayLsps[i][0] = dayL[i], dayRsps[i][0] = dayR[i];
    for(int d=1; d<20; d++){
        for(int i=1; i<=K; i++){
            nxtLsps[i][d] = nxtLsps[nxtLsps[i][d-1]][d-1];
            dayLsps[i][d] = dayLsps[i][d-1] + dayLsps[nxtLsps[i][d-1]][d-1];
            nxtRsps[i][d] = nxtRsps[nxtRsps[i][d-1]][d-1];
            dayRsps[i][d] = dayRsps[i][d-1] + dayRsps[nxtRsps[i][d-1]][d-1];
        }
    }

    scanf("%d", &q);
    for(int i=1; i<=q; i++){
        int l, r;
        scanf("%d %d", &l, &r);
        int minIdx = tree.query(1, 1, n-1, l, r-1).second;
        queries[minIdx].push_back(Query(l, r, i));
    }

    for(int m=1; m<n; m++){
        qlcnt = qrcnt = 0;
        for(Query &p: queries[m]){
            int L = p.l, R = p.r, LD = m - L, RD = R - m - 1;
            if(recentL[L] != m){
                recentL[L] = m, Lloc[L] = qlcnt+1;
                for(int i=S[m]; i<=E[m]; i++){
                    int x = ++qlcnt;
                    qlx[x] = i, qld[x] = 0;
                    for(int d=0; d<20; d++) if((LD>>d)&1) qld[x] += dayLsps[qlx[x]][d], qlx[x] = nxtLsps[qlx[x]][d];
                }
            }
            if(recentR[R] != m){
                recentR[R] = m, Rloc[R] = qrcnt+1;
                for(int i=S[m]; i<=E[m]; i++){
                    int x = ++qrcnt;
                    qrx[x] = i, qrd[x] = 0;
                    for(int d=0; d<20; d++) if((RD>>d)&1) qrd[x] += dayRsps[qrx[x]][d], qrx[x] = nxtRsps[qrx[x]][d];
                }
            }

            int idx = p.idx;
            ans[idx] = LLONG_MAX;
            for(int i=S[m]; i<=E[m]; i++){
                int lp = Lloc[L] + (i - S[m]), rp = Rloc[R] + (i - S[m]);
                ll v = (qld[lp] + qrd[rp]) * T + (arr[qrx[rp]].y - arrRev[qlx[lp]].y);
                ans[idx] = min(ans[idx], v);
            }
        }
    }

    for(int i=1; i<=q; i++) printf("%lld\n", ans[i]);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:64:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |     scanf("%d %lld", &n, &T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:67:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |         scanf("%d", &s);
      |         ~~~~~^~~~~~~~~~
Main.cpp:71:37: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |         for(int j=0; j<s; j++) scanf("%lld %lld", &vec[j].x, &vec[j].y);
      |                                ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:114:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  114 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
Main.cpp:117:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  117 |         scanf("%d %d", &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 26972 KB Output is correct
2 Correct 48 ms 36500 KB Output is correct
3 Correct 88 ms 36692 KB Output is correct
4 Correct 126 ms 38996 KB Output is correct
5 Correct 97 ms 36688 KB Output is correct
6 Correct 121 ms 38992 KB Output is correct
7 Correct 128 ms 39248 KB Output is correct
8 Correct 94 ms 36948 KB Output is correct
9 Correct 121 ms 38992 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 26972 KB Output is correct
2 Correct 48 ms 36500 KB Output is correct
3 Correct 88 ms 36692 KB Output is correct
4 Correct 126 ms 38996 KB Output is correct
5 Correct 97 ms 36688 KB Output is correct
6 Correct 121 ms 38992 KB Output is correct
7 Correct 128 ms 39248 KB Output is correct
8 Correct 94 ms 36948 KB Output is correct
9 Correct 121 ms 38992 KB Output is correct
10 Correct 3 ms 26972 KB Output is correct
11 Correct 102 ms 38076 KB Output is correct
12 Correct 103 ms 37976 KB Output is correct
13 Correct 99 ms 37588 KB Output is correct
14 Correct 96 ms 37716 KB Output is correct
15 Correct 98 ms 37968 KB Output is correct
16 Correct 49 ms 36032 KB Output is correct
17 Correct 110 ms 38016 KB Output is correct
18 Correct 95 ms 37660 KB Output is correct
19 Correct 112 ms 38480 KB Output is correct
20 Correct 101 ms 37972 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 26972 KB Output is correct
2 Correct 48 ms 36500 KB Output is correct
3 Correct 88 ms 36692 KB Output is correct
4 Correct 126 ms 38996 KB Output is correct
5 Correct 97 ms 36688 KB Output is correct
6 Correct 121 ms 38992 KB Output is correct
7 Correct 128 ms 39248 KB Output is correct
8 Correct 94 ms 36948 KB Output is correct
9 Correct 121 ms 38992 KB Output is correct
10 Correct 162 ms 61268 KB Output is correct
11 Correct 264 ms 64596 KB Output is correct
12 Correct 238 ms 64616 KB Output is correct
13 Correct 189 ms 62032 KB Output is correct
14 Correct 238 ms 64596 KB Output is correct
15 Correct 233 ms 64648 KB Output is correct
16 Correct 171 ms 61384 KB Output is correct
17 Correct 230 ms 64596 KB Output is correct
18 Correct 102 ms 57416 KB Output is correct
19 Correct 95 ms 56916 KB Output is correct
20 Correct 101 ms 57424 KB Output is correct
21 Correct 101 ms 57424 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 26972 KB Output is correct
2 Correct 48 ms 36500 KB Output is correct
3 Correct 88 ms 36692 KB Output is correct
4 Correct 126 ms 38996 KB Output is correct
5 Correct 97 ms 36688 KB Output is correct
6 Correct 121 ms 38992 KB Output is correct
7 Correct 128 ms 39248 KB Output is correct
8 Correct 94 ms 36948 KB Output is correct
9 Correct 121 ms 38992 KB Output is correct
10 Correct 3 ms 26972 KB Output is correct
11 Correct 102 ms 38076 KB Output is correct
12 Correct 103 ms 37976 KB Output is correct
13 Correct 99 ms 37588 KB Output is correct
14 Correct 96 ms 37716 KB Output is correct
15 Correct 98 ms 37968 KB Output is correct
16 Correct 49 ms 36032 KB Output is correct
17 Correct 110 ms 38016 KB Output is correct
18 Correct 95 ms 37660 KB Output is correct
19 Correct 112 ms 38480 KB Output is correct
20 Correct 101 ms 37972 KB Output is correct
21 Correct 162 ms 61268 KB Output is correct
22 Correct 264 ms 64596 KB Output is correct
23 Correct 238 ms 64616 KB Output is correct
24 Correct 189 ms 62032 KB Output is correct
25 Correct 238 ms 64596 KB Output is correct
26 Correct 233 ms 64648 KB Output is correct
27 Correct 171 ms 61384 KB Output is correct
28 Correct 230 ms 64596 KB Output is correct
29 Correct 102 ms 57416 KB Output is correct
30 Correct 95 ms 56916 KB Output is correct
31 Correct 101 ms 57424 KB Output is correct
32 Correct 101 ms 57424 KB Output is correct
33 Correct 275 ms 63968 KB Output is correct
34 Correct 250 ms 63824 KB Output is correct
35 Correct 260 ms 63900 KB Output is correct
36 Correct 240 ms 63824 KB Output is correct
37 Correct 200 ms 64336 KB Output is correct
38 Correct 174 ms 61380 KB Output is correct
39 Correct 221 ms 63824 KB Output is correct
40 Correct 170 ms 58964 KB Output is correct
41 Correct 180 ms 58192 KB Output is correct
42 Correct 219 ms 64376 KB Output is correct
43 Correct 175 ms 59732 KB Output is correct
44 Correct 200 ms 61520 KB Output is correct
45 Correct 98 ms 56912 KB Output is correct
46 Correct 90 ms 56656 KB Output is correct

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 26968 KB Output is correct
2 Correct 2 ms 26972 KB Output is correct
3 Correct 337 ms 56400 KB Output is correct
4 Correct 348 ms 58704 KB Output is correct
5 Correct 349 ms 58704 KB Output is correct
6 Correct 238 ms 58704 KB Output is correct
7 Correct 242 ms 58704 KB Output is correct
8 Correct 189 ms 48724 KB Output is correct
9 Correct 62 ms 58960 KB Output is correct
10 Execution timed out 2045 ms 48232 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 26972 KB Output is correct
2 Correct 48 ms 36500 KB Output is correct
3 Correct 88 ms 36692 KB Output is correct
4 Correct 126 ms 38996 KB Output is correct
5 Correct 97 ms 36688 KB Output is correct
6 Correct 121 ms 38992 KB Output is correct
7 Correct 128 ms 39248 KB Output is correct
8 Correct 94 ms 36948 KB Output is correct
9 Correct 121 ms 38992 KB Output is correct
10 Correct 3 ms 26972 KB Output is correct
11 Correct 102 ms 38076 KB Output is correct
12 Correct 103 ms 37976 KB Output is correct
13 Correct 99 ms 37588 KB Output is correct
14 Correct 96 ms 37716 KB Output is correct
15 Correct 98 ms 37968 KB Output is correct
16 Correct 49 ms 36032 KB Output is correct
17 Correct 110 ms 38016 KB Output is correct
18 Correct 95 ms 37660 KB Output is correct
19 Correct 112 ms 38480 KB Output is correct
20 Correct 101 ms 37972 KB Output is correct
21 Correct 162 ms 61268 KB Output is correct
22 Correct 264 ms 64596 KB Output is correct
23 Correct 238 ms 64616 KB Output is correct
24 Correct 189 ms 62032 KB Output is correct
25 Correct 238 ms 64596 KB Output is correct
26 Correct 233 ms 64648 KB Output is correct
27 Correct 171 ms 61384 KB Output is correct
28 Correct 230 ms 64596 KB Output is correct
29 Correct 102 ms 57416 KB Output is correct
30 Correct 95 ms 56916 KB Output is correct
31 Correct 101 ms 57424 KB Output is correct
32 Correct 101 ms 57424 KB Output is correct
33 Correct 275 ms 63968 KB Output is correct
34 Correct 250 ms 63824 KB Output is correct
35 Correct 260 ms 63900 KB Output is correct
36 Correct 240 ms 63824 KB Output is correct
37 Correct 200 ms 64336 KB Output is correct
38 Correct 174 ms 61380 KB Output is correct
39 Correct 221 ms 63824 KB Output is correct
40 Correct 170 ms 58964 KB Output is correct
41 Correct 180 ms 58192 KB Output is correct
42 Correct 219 ms 64376 KB Output is correct
43 Correct 175 ms 59732 KB Output is correct
44 Correct 200 ms 61520 KB Output is correct
45 Correct 98 ms 56912 KB Output is correct
46 Correct 90 ms 56656 KB Output is correct
47 Correct 3 ms 26968 KB Output is correct
48 Correct 2 ms 26972 KB Output is correct
49 Correct 337 ms 56400 KB Output is correct
50 Correct 348 ms 58704 KB Output is correct
51 Correct 349 ms 58704 KB Output is correct
52 Correct 238 ms 58704 KB Output is correct
53 Correct 242 ms 58704 KB Output is correct
54 Correct 189 ms 48724 KB Output is correct
55 Correct 62 ms 58960 KB Output is correct
56 Execution timed out 2045 ms 48232 KB Time limit exceeded
57 Halted 0 ms 0 KB -