oj.uz

Submission #660293

# Submission time Handle Problem Language Result Execution time Memory
660293 2022-11-21T13:30:04 Z ktkerem Event Hopping (BOI22_events) C++17
100 / 100
 240 ms 56848 KB 
/*#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")/**/
#include<bits/stdc++.h>
/**/
//typedef int ll;
typedef long long ll;
typedef unsigned long long ull;
typedef std::string str;
/*typedef __int128 vll;
typedef unsigned __int128 uvll;*/
#define llll std::pair<ll , ll>
#define pb push_back
#define pf push_front
#define halo cout << "hello\n"
#define fi first
#define sec second
#define all(a) a.begin() , a.end()
const ll limit = 1e14 + 7; 
const ll ous = 1e5 + 7;
const ll dx[4] = {-1 , 0 , 1 , 0} , dy[4] = {0,1,0,-1};
ll n , m;std::vector<llll> ar;
llll rmq[ous][20];ll nex[ous][20];
void solve(){
    for(ll i =0;19>i;i++){
        for(ll j= 0;ous>j;j++){
            rmq[j][i] = {limit , -1};
        }
    }
    memset(nex , 0ll , sizeof(nex));
    ll n , q;std::cin >> n >> q;
    ar.resize(n);
    std::set<ll> st;
    std::vector<ll> b;
    for(ll i = 0;n>i;i++){
        std::cin >> ar[i].fi >> ar[i].sec;
        st.insert(ar[i].sec);
    }
    for(auto j:st){
        b.pb(j);
    }
    for(ll i = 0;n>i;i++){
        ll l = std::lower_bound(all(b) , ar[i].sec) - b.begin();
        rmq[l][0] = std::min(rmq[l][0] , {ar[i].fi , i}); 
    }
    for(ll i = 1;20>i;i++){
        ll o = (1ll << i);
        for(ll j = 0;n >= j + o;j++){
            rmq[j][i] = std::min(rmq[j][i-1] , rmq[j + (1ll << (i-1))][i-1]);
        }
    }
    for(ll i = 0;n>i;i++){
        ll l = std::lower_bound(all(b) , ar[i].fi) - b.begin();
        ll r = std::lower_bound(all(b) , ar[i].sec) - b.begin();
        ll o = log2(r - l + 1);
        llll t = std::min(rmq[l][o] , rmq[r - (1ll << o) + 1][o]);
        nex[i][0] = t.sec;
    }
    for(ll i = 1;20>i;i++){
        for(ll j = 0;n>j;j++){
            nex[j][i] = nex[nex[j][i-1]][i-1];
        }
    }
    //std::cout << nex[7][0] << std::endl;
    while(q--){
        ll x , y;std::cin >> x >> y;x--;y--;
        if(x == y || (ar[x].sec >= ar[y].fi && ar[x].sec <= ar[y].sec)){
            if(x == y){
                std::cout << "0\n";
            }
            else{
                std::cout << "1\n";
            }
            continue;
        }
        ll sc = 1;
        for(ll i = 19;0<=i;i--){
            if(ar[nex[y][i]].fi > ar[x].sec){
                y = nex[y][i];
                sc+= 1ll << i;
                //std::cout << y << std::endl;
            }
        }
        //std::cout << "//" << std::endl;
        y = nex[y][0];
        if(ar[x].sec < ar[y].fi || ar[x].sec > ar[y].sec){
            std::cout << "impossible\n";
        }
        else{
            std::cout << sc + (ar[x].sec >= ar[y].fi) << "\n";
        }
    }
    return;/**/
}
signed main(){
    std::ios_base::sync_with_stdio(false);std::cin.tie(NULL);
    ll t=1;
    //std::cin >> t;
    ll o = 1;
    while(t--){ 
        //cout << "Case " << o++ << ":\n";
        solve();
    }
    return 0;
}/**/

Compilation message

events.cpp:5:78: warning: "/*" within comment [-Wcomment]
    5 | #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")/**/
      |                                                                               
events.cpp: In function 'int main()':
events.cpp:101:8: warning: unused variable 'o' [-Wunused-variable]
  101 |     ll o = 1;
      |        ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 47180 KB Output is correct
2 Correct 170 ms 54960 KB Output is correct
3 Correct 186 ms 54992 KB Output is correct
4 Correct 217 ms 54936 KB Output is correct
5 Correct 192 ms 56408 KB Output is correct
6 Correct 189 ms 56384 KB Output is correct
7 Correct 199 ms 56416 KB Output is correct
8 Correct 167 ms 56772 KB Output is correct
9 Correct 168 ms 56796 KB Output is correct
10 Correct 200 ms 56608 KB Output is correct
11 Correct 193 ms 56696 KB Output is correct
12 Correct 141 ms 54000 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47188 KB Output is correct
2 Correct 28 ms 47256 KB Output is correct
3 Correct 29 ms 47308 KB Output is correct
4 Correct 29 ms 47308 KB Output is correct
5 Correct 31 ms 47312 KB Output is correct
6 Correct 36 ms 47220 KB Output is correct
7 Correct 33 ms 47376 KB Output is correct
8 Correct 29 ms 47380 KB Output is correct
9 Correct 34 ms 47256 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47188 KB Output is correct
2 Correct 28 ms 47256 KB Output is correct
3 Correct 29 ms 47308 KB Output is correct
4 Correct 29 ms 47308 KB Output is correct
5 Correct 31 ms 47312 KB Output is correct
6 Correct 36 ms 47220 KB Output is correct
7 Correct 33 ms 47376 KB Output is correct
8 Correct 29 ms 47380 KB Output is correct
9 Correct 34 ms 47256 KB Output is correct
10 Correct 38 ms 47240 KB Output is correct
11 Correct 37 ms 47180 KB Output is correct
12 Correct 30 ms 47364 KB Output is correct
13 Correct 30 ms 47372 KB Output is correct
14 Correct 29 ms 47316 KB Output is correct
15 Correct 29 ms 47316 KB Output is correct
16 Correct 36 ms 47376 KB Output is correct
17 Correct 30 ms 47276 KB Output is correct
18 Correct 29 ms 47236 KB Output is correct
19 Correct 71 ms 49140 KB Output is correct
20 Correct 58 ms 49160 KB Output is correct
21 Correct 63 ms 49424 KB Output is correct
22 Correct 53 ms 49328 KB Output is correct
23 Correct 54 ms 49292 KB Output is correct
24 Correct 51 ms 49356 KB Output is correct
25 Correct 56 ms 49024 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47188 KB Output is correct
2 Correct 28 ms 47256 KB Output is correct
3 Correct 29 ms 47308 KB Output is correct
4 Correct 29 ms 47308 KB Output is correct
5 Correct 31 ms 47312 KB Output is correct
6 Correct 36 ms 47220 KB Output is correct
7 Correct 33 ms 47376 KB Output is correct
8 Correct 29 ms 47380 KB Output is correct
9 Correct 34 ms 47256 KB Output is correct
10 Correct 29 ms 47256 KB Output is correct
11 Correct 30 ms 47192 KB Output is correct
12 Correct 33 ms 47308 KB Output is correct
13 Correct 30 ms 47376 KB Output is correct
14 Correct 29 ms 47288 KB Output is correct
15 Correct 32 ms 47320 KB Output is correct
16 Correct 30 ms 47296 KB Output is correct
17 Correct 30 ms 47376 KB Output is correct
18 Correct 29 ms 47296 KB Output is correct
19 Correct 146 ms 55876 KB Output is correct
20 Correct 141 ms 55856 KB Output is correct
21 Correct 140 ms 53068 KB Output is correct
22 Correct 155 ms 55876 KB Output is correct
23 Correct 156 ms 55892 KB Output is correct
24 Correct 149 ms 55944 KB Output is correct
25 Correct 83 ms 50100 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 171 ms 55036 KB Output is correct
2 Correct 192 ms 54984 KB Output is correct
3 Correct 214 ms 54932 KB Output is correct
4 Correct 181 ms 56836 KB Output is correct
5 Correct 210 ms 56612 KB Output is correct
6 Correct 229 ms 56564 KB Output is correct
7 Correct 238 ms 56408 KB Output is correct
8 Correct 185 ms 56576 KB Output is correct
9 Correct 158 ms 55964 KB Output is correct
10 Correct 191 ms 56100 KB Output is correct
11 Correct 177 ms 55824 KB Output is correct
12 Correct 195 ms 56124 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 47180 KB Output is correct
2 Correct 170 ms 54960 KB Output is correct
3 Correct 186 ms 54992 KB Output is correct
4 Correct 217 ms 54936 KB Output is correct
5 Correct 192 ms 56408 KB Output is correct
6 Correct 189 ms 56384 KB Output is correct
7 Correct 199 ms 56416 KB Output is correct
8 Correct 167 ms 56772 KB Output is correct
9 Correct 168 ms 56796 KB Output is correct
10 Correct 200 ms 56608 KB Output is correct
11 Correct 193 ms 56696 KB Output is correct
12 Correct 141 ms 54000 KB Output is correct
13 Correct 27 ms 47188 KB Output is correct
14 Correct 28 ms 47256 KB Output is correct
15 Correct 29 ms 47308 KB Output is correct
16 Correct 29 ms 47308 KB Output is correct
17 Correct 31 ms 47312 KB Output is correct
18 Correct 36 ms 47220 KB Output is correct
19 Correct 33 ms 47376 KB Output is correct
20 Correct 29 ms 47380 KB Output is correct
21 Correct 34 ms 47256 KB Output is correct
22 Correct 38 ms 47240 KB Output is correct
23 Correct 37 ms 47180 KB Output is correct
24 Correct 30 ms 47364 KB Output is correct
25 Correct 30 ms 47372 KB Output is correct
26 Correct 29 ms 47316 KB Output is correct
27 Correct 29 ms 47316 KB Output is correct
28 Correct 36 ms 47376 KB Output is correct
29 Correct 30 ms 47276 KB Output is correct
30 Correct 29 ms 47236 KB Output is correct
31 Correct 71 ms 49140 KB Output is correct
32 Correct 58 ms 49160 KB Output is correct
33 Correct 63 ms 49424 KB Output is correct
34 Correct 53 ms 49328 KB Output is correct
35 Correct 54 ms 49292 KB Output is correct
36 Correct 51 ms 49356 KB Output is correct
37 Correct 56 ms 49024 KB Output is correct
38 Correct 29 ms 47256 KB Output is correct
39 Correct 30 ms 47192 KB Output is correct
40 Correct 33 ms 47308 KB Output is correct
41 Correct 30 ms 47376 KB Output is correct
42 Correct 29 ms 47288 KB Output is correct
43 Correct 32 ms 47320 KB Output is correct
44 Correct 30 ms 47296 KB Output is correct
45 Correct 30 ms 47376 KB Output is correct
46 Correct 29 ms 47296 KB Output is correct
47 Correct 146 ms 55876 KB Output is correct
48 Correct 141 ms 55856 KB Output is correct
49 Correct 140 ms 53068 KB Output is correct
50 Correct 155 ms 55876 KB Output is correct
51 Correct 156 ms 55892 KB Output is correct
52 Correct 149 ms 55944 KB Output is correct
53 Correct 83 ms 50100 KB Output is correct
54 Correct 171 ms 55036 KB Output is correct
55 Correct 192 ms 54984 KB Output is correct
56 Correct 214 ms 54932 KB Output is correct
57 Correct 181 ms 56836 KB Output is correct
58 Correct 210 ms 56612 KB Output is correct
59 Correct 229 ms 56564 KB Output is correct
60 Correct 238 ms 56408 KB Output is correct
61 Correct 185 ms 56576 KB Output is correct
62 Correct 158 ms 55964 KB Output is correct
63 Correct 191 ms 56100 KB Output is correct
64 Correct 177 ms 55824 KB Output is correct
65 Correct 195 ms 56124 KB Output is correct
66 Correct 28 ms 47308 KB Output is correct
67 Correct 184 ms 56304 KB Output is correct
68 Correct 192 ms 56348 KB Output is correct
69 Correct 240 ms 56328 KB Output is correct
70 Correct 192 ms 56476 KB Output is correct
71 Correct 186 ms 56324 KB Output is correct
72 Correct 200 ms 56384 KB Output is correct
73 Correct 191 ms 56832 KB Output is correct
74 Correct 176 ms 56848 KB Output is correct
75 Correct 208 ms 56668 KB Output is correct
76 Correct 191 ms 56724 KB Output is correct
77 Correct 128 ms 54056 KB Output is correct
78 Correct 29 ms 47256 KB Output is correct
79 Correct 33 ms 47284 KB Output is correct
80 Correct 29 ms 47284 KB Output is correct
81 Correct 31 ms 47300 KB Output is correct
82 Correct 30 ms 47256 KB Output is correct
83 Correct 30 ms 47292 KB Output is correct
84 Correct 30 ms 47276 KB Output is correct
85 Correct 30 ms 47244 KB Output is correct
86 Correct 58 ms 49156 KB Output is correct
87 Correct 61 ms 49176 KB Output is correct
88 Correct 65 ms 49356 KB Output is correct
89 Correct 54 ms 49344 KB Output is correct
90 Correct 54 ms 49356 KB Output is correct
91 Correct 61 ms 49340 KB Output is correct
92 Correct 55 ms 49072 KB Output is correct
93 Correct 161 ms 55940 KB Output is correct
94 Correct 140 ms 55856 KB Output is correct
95 Correct 142 ms 53060 KB Output is correct
96 Correct 156 ms 55964 KB Output is correct
97 Correct 147 ms 55948 KB Output is correct
98 Correct 148 ms 55920 KB Output is correct
99 Correct 83 ms 49996 KB Output is correct
100 Correct 220 ms 56476 KB Output is correct
101 Correct 219 ms 56576 KB Output is correct
102 Correct 207 ms 56596 KB Output is correct
103 Correct 183 ms 56128 KB Output is correct
104 Correct 180 ms 55876 KB Output is correct
105 Correct 206 ms 56072 KB Output is correct
106 Correct 185 ms 55092 KB Output is correct
107 Correct 229 ms 56528 KB Output is correct
108 Correct 171 ms 53780 KB Output is correct
109 Correct 164 ms 53804 KB Output is correct
110 Correct 191 ms 56312 KB Output is correct
111 Correct 186 ms 56300 KB Output is correct