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답안 #1034274

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1034274 2024-07-25T11:36:42 Z Antekb Escape Route 2 (JOI24_escape2) C++17
100 / 100
 1098 ms 266656 KB 
#include "bits/stdc++.h"	/** keep-include */
using namespace std;

#define rep(i, b, e) for(int i = (b); i <= (e); i++)
#define per(i, b, e) for(int i = (e); i >= (b); i--)
#define FOR(i, b, e) rep(i, b, (e) - 1)
#define SZ(x) int(x.size())
#define all(x) x.begin(), x.end()
#define pb push_back
#define mp make_pair
#define st first
#define nd second
using ll = long long;
using vi = vector<int>;
using pii = pair<int, int>;

auto &operator<<(auto &o, pair<auto, auto> p) {
	return o << "(" << p.st << ", " << p.nd << ")"; }
auto operator<<(auto &o, auto x)->decltype(end(x), o) {
	o << "{"; int i=0; for(auto e: x) o << ", " + 2*!i++ << e;
	return o << "}"; }
#ifdef LOCAL
#define deb(x...) cerr << "[" #x "]: ", [](auto...$) { \
	((cerr << $ << "; "),...) << endl; }(x)
#else
#define deb(...)
#endif

const int K=19, N=3e5+5;

vector<pii> loty[N];
vector<int> id[N];
vi best[K][N];
int nxt[K][N];
ll czas[K][N];

pair<int, ll> jump(int v, int t){
    ll res=0;
    for(int k=K-1; k>=0; k--){
        if(t>=(1<<k)){
            res+=czas[k][v];
            v=nxt[k][v];
            t-=(1<<k);
        }
    }
    return mp(v, res);
}

void solve() {
	int n, t;
    cin>>n>>t;
    vector<pair<pii, int> > co;
    co.pb(mp(mp(0, 0), 0));
    for(int i=1; i<n; i++){
        int k;
        cin>>k;
        vector<pair<int, int> > V(k);
        for(auto &j:V){
            cin>>j.st>>j.nd;
        }
        sort(all(V));
        vector<pii> V2;
        for(auto &j:V){
            while(V2.size() && V2.back().nd>=j.nd){
                V2.pop_back();
            }
            V2.pb(j);
        }
        k=V2.size();
        for(int j=0; j<k; j++){
            id[i].pb(co.size());
            co.pb(mp(V2[j], i));
        }
        loty[i]=V2;
    }

    for(int j=1; j<co.size(); j++){
        auto &[seg, i] = co[j];
        if(i!=n-1){
            auto it=lower_bound(all(loty[i+1]), mp(seg.nd, 0));
            if(it==loty[i+1].end()){
                it=loty[i+1].begin();
                nxt[0][j]=id[i+1][it-loty[i+1].begin()];
                czas[0][j]=it->nd-seg.nd+t;
                deb(czas[0][j], it->nd, seg.nd,t);
            }
            else{
                nxt[0][j]=id[i+1][it-loty[i+1].begin()];
                czas[0][j]=it->nd-seg.nd;
            }
        }
        deb(j, seg, i, co[nxt[0][j]], czas[0][j]);
    }
    for(int k=1; k<K; k++){
        for(int i=1; i<co.size(); i++){
            nxt[k][i]=nxt[k-1][nxt[k-1][i]];
            czas[k][i]=czas[k-1][i]+czas[k-1][nxt[k-1][i]];
        }
    }
    for(int k=0; k<K; k++){
        for(int i=1; i<n; i++){
            vector<pair<int, pair<ll, int> > > V;//dokad, czas, id
            for(int j=0; j<loty[i].size(); j++){
                V.pb(mp(nxt[k][id[i][j]], mp(czas[k][id[i][j]]+loty[i][j].nd-loty[i][j].st, j)));
            }
            sort(all(V));
            for(int j=0; j<V.size(); j++){
                if(j==0 || V[j].st!=V[j-1].st){
                    best[k][i].pb(V[j].nd.nd);
                }
            }
            assert(best[k][i].size());
        }
    }
    map<pair<int, int> , ll> old_ans;
    int q;
    cin>>q;
    while(q--){
        int l, r;
        cin>>l>>r;
        if(old_ans.find(mp(l, r))!=old_ans.end()){
            cout<<old_ans[mp(l, r)]<<"\n";
            continue;
        }
        ll ans=1e18;
        int k=0;
        int dl=r-l-1;
        if(dl>0){
            while((1<<k)<=dl)k++;
            k--;
            assert(best[k][l].size());
            //for(int i=0; i<loty[l].size(); i++){
            for(int i:best[k][l]){
                ll part=loty[l][i].nd-loty[l][i].st;
                int lot=id[l][i];
                deb(lot);
                /*for(int j=l+1; j<r; j++){
                    part+=czas[0][lot];
                    lot=nxt[0][lot];
                }*/
                part+=jump(lot, dl).nd;
                //deb(part);
                ans=min(ans, part);
            }
        }
        else{
            for(int i=0; i<loty[l].size(); i++){
                ans=min(ans, ll(loty[l][i].nd-loty[l][i].st));
            }
        }
        old_ans[mp(l, r)]=ans;
        cout<<ans<<"\n";
    }
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	int tt = 1;
	// cin >> tt;
	FOR(te, 0, tt) solve();
	return 0;
}

Compilation message

Main.cpp:17:18: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   17 | auto &operator<<(auto &o, pair<auto, auto> p) {
      |                  ^~~~
Main.cpp:17:32: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   17 | auto &operator<<(auto &o, pair<auto, auto> p) {
      |                                ^~~~
Main.cpp:17:38: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   17 | auto &operator<<(auto &o, pair<auto, auto> p) {
      |                                      ^~~~
Main.cpp:19:17: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | auto operator<<(auto &o, auto x)->decltype(end(x), o) {
      |                 ^~~~
Main.cpp:19:26: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | auto operator<<(auto &o, auto x)->decltype(end(x), o) {
      |                          ^~~~
Main.cpp: In function 'void solve()':
Main.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |     for(int j=1; j<co.size(); j++){
      |                  ~^~~~~~~~~~
Main.cpp:95:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |         for(int i=1; i<co.size(); i++){
      |                      ~^~~~~~~~~~
Main.cpp:103:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |             for(int j=0; j<loty[i].size(); j++){
      |                          ~^~~~~~~~~~~~~~~
Main.cpp:107:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<long long int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |             for(int j=0; j<V.size(); j++){
      |                          ~^~~~~~~~~
Main.cpp:147:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  147 |             for(int i=0; i<loty[l].size(); i++){
      |                          ~^~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 148560 KB Output is correct
2 Correct 96 ms 151632 KB Output is correct
3 Correct 205 ms 168532 KB Output is correct
4 Correct 300 ms 174672 KB Output is correct
5 Correct 236 ms 169284 KB Output is correct
6 Correct 293 ms 174420 KB Output is correct
7 Correct 293 ms 174460 KB Output is correct
8 Correct 211 ms 167784 KB Output is correct
9 Correct 299 ms 174420 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 148560 KB Output is correct
2 Correct 96 ms 151632 KB Output is correct
3 Correct 205 ms 168532 KB Output is correct
4 Correct 300 ms 174672 KB Output is correct
5 Correct 236 ms 169284 KB Output is correct
6 Correct 293 ms 174420 KB Output is correct
7 Correct 293 ms 174460 KB Output is correct
8 Correct 211 ms 167784 KB Output is correct
9 Correct 299 ms 174420 KB Output is correct
10 Correct 66 ms 148564 KB Output is correct
11 Correct 210 ms 160080 KB Output is correct
12 Correct 229 ms 160104 KB Output is correct
13 Correct 218 ms 159832 KB Output is correct
14 Correct 218 ms 159920 KB Output is correct
15 Correct 238 ms 166744 KB Output is correct
16 Correct 106 ms 152660 KB Output is correct
17 Correct 278 ms 172900 KB Output is correct
18 Correct 232 ms 167508 KB Output is correct
19 Correct 272 ms 172040 KB Output is correct
20 Correct 252 ms 166244 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 148560 KB Output is correct
2 Correct 96 ms 151632 KB Output is correct
3 Correct 205 ms 168532 KB Output is correct
4 Correct 300 ms 174672 KB Output is correct
5 Correct 236 ms 169284 KB Output is correct
6 Correct 293 ms 174420 KB Output is correct
7 Correct 293 ms 174460 KB Output is correct
8 Correct 211 ms 167784 KB Output is correct
9 Correct 299 ms 174420 KB Output is correct
10 Correct 411 ms 237808 KB Output is correct
11 Correct 604 ms 265216 KB Output is correct
12 Correct 720 ms 265292 KB Output is correct
13 Correct 649 ms 259788 KB Output is correct
14 Correct 745 ms 266356 KB Output is correct
15 Correct 639 ms 266656 KB Output is correct
16 Correct 434 ms 239112 KB Output is correct
17 Correct 685 ms 266548 KB Output is correct
18 Correct 306 ms 238592 KB Output is correct
19 Correct 289 ms 237568 KB Output is correct
20 Correct 303 ms 238576 KB Output is correct
21 Correct 331 ms 238760 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 148560 KB Output is correct
2 Correct 96 ms 151632 KB Output is correct
3 Correct 205 ms 168532 KB Output is correct
4 Correct 300 ms 174672 KB Output is correct
5 Correct 236 ms 169284 KB Output is correct
6 Correct 293 ms 174420 KB Output is correct
7 Correct 293 ms 174460 KB Output is correct
8 Correct 211 ms 167784 KB Output is correct
9 Correct 299 ms 174420 KB Output is correct
10 Correct 66 ms 148564 KB Output is correct
11 Correct 210 ms 160080 KB Output is correct
12 Correct 229 ms 160104 KB Output is correct
13 Correct 218 ms 159832 KB Output is correct
14 Correct 218 ms 159920 KB Output is correct
15 Correct 238 ms 166744 KB Output is correct
16 Correct 106 ms 152660 KB Output is correct
17 Correct 278 ms 172900 KB Output is correct
18 Correct 232 ms 167508 KB Output is correct
19 Correct 272 ms 172040 KB Output is correct
20 Correct 252 ms 166244 KB Output is correct
21 Correct 411 ms 237808 KB Output is correct
22 Correct 604 ms 265216 KB Output is correct
23 Correct 720 ms 265292 KB Output is correct
24 Correct 649 ms 259788 KB Output is correct
25 Correct 745 ms 266356 KB Output is correct
26 Correct 639 ms 266656 KB Output is correct
27 Correct 434 ms 239112 KB Output is correct
28 Correct 685 ms 266548 KB Output is correct
29 Correct 306 ms 238592 KB Output is correct
30 Correct 289 ms 237568 KB Output is correct
31 Correct 303 ms 238576 KB Output is correct
32 Correct 331 ms 238760 KB Output is correct
33 Correct 557 ms 218116 KB Output is correct
34 Correct 614 ms 217856 KB Output is correct
35 Correct 597 ms 210948 KB Output is correct
36 Correct 500 ms 210948 KB Output is correct
37 Correct 555 ms 218136 KB Output is correct
38 Correct 396 ms 221696 KB Output is correct
39 Correct 500 ms 239876 KB Output is correct
40 Correct 403 ms 202496 KB Output is correct
41 Correct 463 ms 220676 KB Output is correct
42 Correct 587 ms 241932 KB Output is correct
43 Correct 420 ms 210388 KB Output is correct
44 Correct 458 ms 215452 KB Output is correct
45 Correct 291 ms 218852 KB Output is correct
46 Correct 229 ms 198912 KB Output is correct

Subtask #5
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 61 ms 148564 KB Output is correct
2 Correct 60 ms 148560 KB Output is correct
3 Correct 423 ms 179204 KB Output is correct
4 Correct 424 ms 181520 KB Output is correct
5 Correct 428 ms 181764 KB Output is correct
6 Correct 416 ms 181808 KB Output is correct
7 Correct 411 ms 181556 KB Output is correct
8 Correct 174 ms 166460 KB Output is correct
9 Correct 173 ms 177404 KB Output is correct
10 Correct 166 ms 164408 KB Output is correct
11 Correct 292 ms 238500 KB Output is correct
12 Correct 320 ms 218820 KB Output is correct
13 Correct 243 ms 198920 KB Output is correct
14 Correct 273 ms 190368 KB Output is correct
15 Correct 246 ms 189708 KB Output is correct
16 Correct 222 ms 192512 KB Output is correct
17 Correct 274 ms 192016 KB Output is correct
18 Correct 235 ms 178788 KB Output is correct
19 Correct 230 ms 177156 KB Output is correct
20 Correct 213 ms 217428 KB Output is correct
21 Correct 238 ms 219360 KB Output is correct
22 Correct 207 ms 196952 KB Output is correct
23 Correct 242 ms 198912 KB Output is correct
24 Correct 305 ms 199148 KB Output is correct
25 Correct 241 ms 196260 KB Output is correct
26 Correct 275 ms 200708 KB Output is correct
27 Correct 285 ms 237568 KB Output is correct
28 Correct 303 ms 238592 KB Output is correct
29 Correct 290 ms 238760 KB Output is correct
30 Correct 153 ms 164272 KB Output is correct
31 Correct 96 ms 152060 KB Output is correct
32 Correct 143 ms 164492 KB Output is correct
33 Correct 115 ms 153228 KB Output is correct
34 Correct 134 ms 158288 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 148560 KB Output is correct
2 Correct 96 ms 151632 KB Output is correct
3 Correct 205 ms 168532 KB Output is correct
4 Correct 300 ms 174672 KB Output is correct
5 Correct 236 ms 169284 KB Output is correct
6 Correct 293 ms 174420 KB Output is correct
7 Correct 293 ms 174460 KB Output is correct
8 Correct 211 ms 167784 KB Output is correct
9 Correct 299 ms 174420 KB Output is correct
10 Correct 66 ms 148564 KB Output is correct
11 Correct 210 ms 160080 KB Output is correct
12 Correct 229 ms 160104 KB Output is correct
13 Correct 218 ms 159832 KB Output is correct
14 Correct 218 ms 159920 KB Output is correct
15 Correct 238 ms 166744 KB Output is correct
16 Correct 106 ms 152660 KB Output is correct
17 Correct 278 ms 172900 KB Output is correct
18 Correct 232 ms 167508 KB Output is correct
19 Correct 272 ms 172040 KB Output is correct
20 Correct 252 ms 166244 KB Output is correct
21 Correct 411 ms 237808 KB Output is correct
22 Correct 604 ms 265216 KB Output is correct
23 Correct 720 ms 265292 KB Output is correct
24 Correct 649 ms 259788 KB Output is correct
25 Correct 745 ms 266356 KB Output is correct
26 Correct 639 ms 266656 KB Output is correct
27 Correct 434 ms 239112 KB Output is correct
28 Correct 685 ms 266548 KB Output is correct
29 Correct 306 ms 238592 KB Output is correct
30 Correct 289 ms 237568 KB Output is correct
31 Correct 303 ms 238576 KB Output is correct
32 Correct 331 ms 238760 KB Output is correct
33 Correct 557 ms 218116 KB Output is correct
34 Correct 614 ms 217856 KB Output is correct
35 Correct 597 ms 210948 KB Output is correct
36 Correct 500 ms 210948 KB Output is correct
37 Correct 555 ms 218136 KB Output is correct
38 Correct 396 ms 221696 KB Output is correct
39 Correct 500 ms 239876 KB Output is correct
40 Correct 403 ms 202496 KB Output is correct
41 Correct 463 ms 220676 KB Output is correct
42 Correct 587 ms 241932 KB Output is correct
43 Correct 420 ms 210388 KB Output is correct
44 Correct 458 ms 215452 KB Output is correct
45 Correct 291 ms 218852 KB Output is correct
46 Correct 229 ms 198912 KB Output is correct
47 Correct 61 ms 148564 KB Output is correct
48 Correct 60 ms 148560 KB Output is correct
49 Correct 423 ms 179204 KB Output is correct
50 Correct 424 ms 181520 KB Output is correct
51 Correct 428 ms 181764 KB Output is correct
52 Correct 416 ms 181808 KB Output is correct
53 Correct 411 ms 181556 KB Output is correct
54 Correct 174 ms 166460 KB Output is correct
55 Correct 173 ms 177404 KB Output is correct
56 Correct 166 ms 164408 KB Output is correct
57 Correct 292 ms 238500 KB Output is correct
58 Correct 320 ms 218820 KB Output is correct
59 Correct 243 ms 198920 KB Output is correct
60 Correct 273 ms 190368 KB Output is correct
61 Correct 246 ms 189708 KB Output is correct
62 Correct 222 ms 192512 KB Output is correct
63 Correct 274 ms 192016 KB Output is correct
64 Correct 235 ms 178788 KB Output is correct
65 Correct 230 ms 177156 KB Output is correct
66 Correct 213 ms 217428 KB Output is correct
67 Correct 238 ms 219360 KB Output is correct
68 Correct 207 ms 196952 KB Output is correct
69 Correct 242 ms 198912 KB Output is correct
70 Correct 305 ms 199148 KB Output is correct
71 Correct 241 ms 196260 KB Output is correct
72 Correct 275 ms 200708 KB Output is correct
73 Correct 285 ms 237568 KB Output is correct
74 Correct 303 ms 238592 KB Output is correct
75 Correct 290 ms 238760 KB Output is correct
76 Correct 153 ms 164272 KB Output is correct
77 Correct 96 ms 152060 KB Output is correct
78 Correct 143 ms 164492 KB Output is correct
79 Correct 115 ms 153228 KB Output is correct
80 Correct 134 ms 158288 KB Output is correct
81 Correct 762 ms 194308 KB Output is correct
82 Correct 806 ms 194184 KB Output is correct
83 Correct 789 ms 194108 KB Output is correct
84 Correct 731 ms 194052 KB Output is correct
85 Correct 856 ms 194304 KB Output is correct
86 Correct 309 ms 178184 KB Output is correct
87 Correct 324 ms 190704 KB Output is correct
88 Correct 1098 ms 206488 KB Output is correct
89 Correct 918 ms 202152 KB Output is correct
90 Correct 352 ms 183752 KB Output is correct
91 Correct 183 ms 167452 KB Output is correct
92 Correct 395 ms 205024 KB Output is correct
93 Correct 413 ms 203520 KB Output is correct
94 Correct 398 ms 214788 KB Output is correct
95 Correct 483 ms 211400 KB Output is correct
96 Correct 375 ms 191880 KB Output is correct
97 Correct 337 ms 186624 KB Output is correct
98 Correct 321 ms 225768 KB Output is correct
99 Correct 434 ms 231940 KB Output is correct
100 Correct 296 ms 204800 KB Output is correct
101 Correct 390 ms 211136 KB Output is correct
102 Correct 476 ms 209020 KB Output is correct
103 Correct 334 ms 205000 KB Output is correct
104 Correct 476 ms 216068 KB Output is correct
105 Correct 309 ms 175976 KB Output is correct
106 Correct 134 ms 155492 KB Output is correct
107 Correct 356 ms 182452 KB Output is correct
108 Correct 212 ms 159356 KB Output is correct
109 Correct 245 ms 166736 KB Output is correct