oj.uz

Submission #992443

# Submission time Handle Problem Language Result Execution time Memory
992443 2024-06-04T13:01:24 Z 79brue Escape Route 2 (JOI24_escape2) C++17
54 / 100
 2000 ms 60244 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const ll INF = 1e18;
const int DEPTH = 17;

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][DEPTH], dayRsps[100002][DEPTH], nxtLsps[100002][DEPTH], dayLsps[100002][DEPTH];

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<DEPTH; 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<DEPTH; 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<DEPTH; 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:65:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     scanf("%d %lld", &n, &T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:68:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |         scanf("%d", &s);
      |         ~~~~~^~~~~~~~~~
Main.cpp:72:37: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         for(int j=0; j<s; j++) scanf("%lld %lld", &vec[j].x, &vec[j].y);
      |                                ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:115:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
Main.cpp:118:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  118 |         scanf("%d %d", &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 29020 KB Output is correct
2 Correct 48 ms 36572 KB Output is correct
3 Correct 89 ms 38740 KB Output is correct
4 Correct 129 ms 41068 KB Output is correct
5 Correct 102 ms 38736 KB Output is correct
6 Correct 123 ms 41180 KB Output is correct
7 Correct 123 ms 41304 KB Output is correct
8 Correct 101 ms 38996 KB Output is correct
9 Correct 123 ms 41044 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 29020 KB Output is correct
2 Correct 48 ms 36572 KB Output is correct
3 Correct 89 ms 38740 KB Output is correct
4 Correct 129 ms 41068 KB Output is correct
5 Correct 102 ms 38736 KB Output is correct
6 Correct 123 ms 41180 KB Output is correct
7 Correct 123 ms 41304 KB Output is correct
8 Correct 101 ms 38996 KB Output is correct
9 Correct 123 ms 41044 KB Output is correct
10 Correct 3 ms 29016 KB Output is correct
11 Correct 110 ms 40080 KB Output is correct
12 Correct 121 ms 40012 KB Output is correct
13 Correct 98 ms 39820 KB Output is correct
14 Correct 98 ms 39760 KB Output is correct
15 Correct 105 ms 40012 KB Output is correct
16 Correct 53 ms 37044 KB Output is correct
17 Correct 113 ms 40020 KB Output is correct
18 Correct 99 ms 39824 KB Output is correct
19 Correct 115 ms 40532 KB Output is correct
20 Correct 102 ms 40016 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 29020 KB Output is correct
2 Correct 48 ms 36572 KB Output is correct
3 Correct 89 ms 38740 KB Output is correct
4 Correct 129 ms 41068 KB Output is correct
5 Correct 102 ms 38736 KB Output is correct
6 Correct 123 ms 41180 KB Output is correct
7 Correct 123 ms 41304 KB Output is correct
8 Correct 101 ms 38996 KB Output is correct
9 Correct 123 ms 41044 KB Output is correct
10 Correct 159 ms 56912 KB Output is correct
11 Correct 233 ms 60244 KB Output is correct
12 Correct 225 ms 60048 KB Output is correct
13 Correct 198 ms 57588 KB Output is correct
14 Correct 230 ms 60240 KB Output is correct
15 Correct 233 ms 60104 KB Output is correct
16 Correct 165 ms 56916 KB Output is correct
17 Correct 228 ms 60240 KB Output is correct
18 Correct 105 ms 52820 KB Output is correct
19 Correct 94 ms 52564 KB Output is correct
20 Correct 98 ms 53120 KB Output is correct
21 Correct 98 ms 52956 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 29020 KB Output is correct
2 Correct 48 ms 36572 KB Output is correct
3 Correct 89 ms 38740 KB Output is correct
4 Correct 129 ms 41068 KB Output is correct
5 Correct 102 ms 38736 KB Output is correct
6 Correct 123 ms 41180 KB Output is correct
7 Correct 123 ms 41304 KB Output is correct
8 Correct 101 ms 38996 KB Output is correct
9 Correct 123 ms 41044 KB Output is correct
10 Correct 3 ms 29016 KB Output is correct
11 Correct 110 ms 40080 KB Output is correct
12 Correct 121 ms 40012 KB Output is correct
13 Correct 98 ms 39820 KB Output is correct
14 Correct 98 ms 39760 KB Output is correct
15 Correct 105 ms 40012 KB Output is correct
16 Correct 53 ms 37044 KB Output is correct
17 Correct 113 ms 40020 KB Output is correct
18 Correct 99 ms 39824 KB Output is correct
19 Correct 115 ms 40532 KB Output is correct
20 Correct 102 ms 40016 KB Output is correct
21 Correct 159 ms 56912 KB Output is correct
22 Correct 233 ms 60244 KB Output is correct
23 Correct 225 ms 60048 KB Output is correct
24 Correct 198 ms 57588 KB Output is correct
25 Correct 230 ms 60240 KB Output is correct
26 Correct 233 ms 60104 KB Output is correct
27 Correct 165 ms 56916 KB Output is correct
28 Correct 228 ms 60240 KB Output is correct
29 Correct 105 ms 52820 KB Output is correct
30 Correct 94 ms 52564 KB Output is correct
31 Correct 98 ms 53120 KB Output is correct
32 Correct 98 ms 52956 KB Output is correct
33 Correct 256 ms 59688 KB Output is correct
34 Correct 250 ms 59580 KB Output is correct
35 Correct 244 ms 59732 KB Output is correct
36 Correct 237 ms 59728 KB Output is correct
37 Correct 197 ms 60244 KB Output is correct
38 Correct 163 ms 57172 KB Output is correct
39 Correct 214 ms 59472 KB Output is correct
40 Correct 176 ms 56852 KB Output is correct
41 Correct 185 ms 56144 KB Output is correct
42 Correct 223 ms 59988 KB Output is correct
43 Correct 172 ms 57680 KB Output is correct
44 Correct 200 ms 59372 KB Output is correct
45 Correct 101 ms 52668 KB Output is correct
46 Correct 86 ms 52560 KB Output is correct

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 29272 KB Output is correct
2 Correct 3 ms 29020 KB Output is correct
3 Correct 341 ms 52300 KB Output is correct
4 Correct 307 ms 52308 KB Output is correct
5 Correct 306 ms 52308 KB Output is correct
6 Correct 212 ms 52308 KB Output is correct
7 Correct 209 ms 52264 KB Output is correct
8 Correct 181 ms 44368 KB Output is correct
9 Correct 58 ms 52544 KB Output is correct
10 Execution timed out 2035 ms 42096 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 29020 KB Output is correct
2 Correct 48 ms 36572 KB Output is correct
3 Correct 89 ms 38740 KB Output is correct
4 Correct 129 ms 41068 KB Output is correct
5 Correct 102 ms 38736 KB Output is correct
6 Correct 123 ms 41180 KB Output is correct
7 Correct 123 ms 41304 KB Output is correct
8 Correct 101 ms 38996 KB Output is correct
9 Correct 123 ms 41044 KB Output is correct
10 Correct 3 ms 29016 KB Output is correct
11 Correct 110 ms 40080 KB Output is correct
12 Correct 121 ms 40012 KB Output is correct
13 Correct 98 ms 39820 KB Output is correct
14 Correct 98 ms 39760 KB Output is correct
15 Correct 105 ms 40012 KB Output is correct
16 Correct 53 ms 37044 KB Output is correct
17 Correct 113 ms 40020 KB Output is correct
18 Correct 99 ms 39824 KB Output is correct
19 Correct 115 ms 40532 KB Output is correct
20 Correct 102 ms 40016 KB Output is correct
21 Correct 159 ms 56912 KB Output is correct
22 Correct 233 ms 60244 KB Output is correct
23 Correct 225 ms 60048 KB Output is correct
24 Correct 198 ms 57588 KB Output is correct
25 Correct 230 ms 60240 KB Output is correct
26 Correct 233 ms 60104 KB Output is correct
27 Correct 165 ms 56916 KB Output is correct
28 Correct 228 ms 60240 KB Output is correct
29 Correct 105 ms 52820 KB Output is correct
30 Correct 94 ms 52564 KB Output is correct
31 Correct 98 ms 53120 KB Output is correct
32 Correct 98 ms 52956 KB Output is correct
33 Correct 256 ms 59688 KB Output is correct
34 Correct 250 ms 59580 KB Output is correct
35 Correct 244 ms 59732 KB Output is correct
36 Correct 237 ms 59728 KB Output is correct
37 Correct 197 ms 60244 KB Output is correct
38 Correct 163 ms 57172 KB Output is correct
39 Correct 214 ms 59472 KB Output is correct
40 Correct 176 ms 56852 KB Output is correct
41 Correct 185 ms 56144 KB Output is correct
42 Correct 223 ms 59988 KB Output is correct
43 Correct 172 ms 57680 KB Output is correct
44 Correct 200 ms 59372 KB Output is correct
45 Correct 101 ms 52668 KB Output is correct
46 Correct 86 ms 52560 KB Output is correct
47 Correct 3 ms 29272 KB Output is correct
48 Correct 3 ms 29020 KB Output is correct
49 Correct 341 ms 52300 KB Output is correct
50 Correct 307 ms 52308 KB Output is correct
51 Correct 306 ms 52308 KB Output is correct
52 Correct 212 ms 52308 KB Output is correct
53 Correct 209 ms 52264 KB Output is correct
54 Correct 181 ms 44368 KB Output is correct
55 Correct 58 ms 52544 KB Output is correct
56 Execution timed out 2035 ms 42096 KB Time limit exceeded
57 Halted 0 ms 0 KB -