oj.uz

Submission #757422

# Submission time Handle Problem Language Result Execution time Memory
757422 2023-06-13T07:22:43 Z YassineBenYounes Pinball (JOI14_pinball) C++17
100 / 100
 690 ms 51948 KB 
#include<bits/stdc++.h>
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef double db;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define pbds tree<pair<int, int>, null_type, less<pair<int, int>>,rb_tree_tag, tree_order_statistics_node_update>
using namespace __gnu_pbds;
ll gcd(ll a , ll b) {return b ? gcd(b , a % b) : a ;} // greatest common divisor (PGCD)
ll lcm(ll a , ll b) {return (a * b) / gcd(a , b);} // least common multiple (PPCM)
int dx[8] = {1, 0, 0, -1, 1, 1, -1, -1};
int dy[8] = {0, 1, -1, 0, 1, -1, -1, 1};
#define endl "\n"
#define ss second
#define ff first
#define all(x) (x).begin() , (x).end()
#define pb push_back
#define vi vector<int>
#define vii vector<pair<int,int>>
#define vl vector<ll>
#define vll vector<pair<ll,ll>>
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pdd  pair<double,double>
#define vdd  vector<pdd>
#define speed ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
////////////////////Only Clear Code//////////////////////////

void usaco_problem(){
    freopen("milkvisits.in", "r", stdin);
    freopen("milkvisits.out", "w", stdout);
}

void init(){
    #ifndef ONLINE_JUDGE
 
freopen("input.txt", "r", stdin);
 
freopen("output.txt", "w", stdout);
 
#endif // ONLINE_JUDGE
}

const int mx = 3e5+5;
const int LOG = 25;
const ll inf = 1e15;
const ll mod = 1e9+7;

ll dp1[mx], dp2[mx];

int a[mx], b[mx], c[mx], d[mx]; 

int n1;

ll segtree[mx*4], segtree1[mx*4];

map<int, int> mp;

ll query(int node, int qlow, int qhigh, int l, int r){
    if(l >= qlow && r <= qhigh){
        return segtree[node];
    }
    if(r < qlow || l > qhigh){
        return inf;
    }
    int md = (l+r)/2;
    return min(query(node*2, qlow, qhigh, l, md), query(node*2+1, qlow, qhigh, md+1, r));
}

ll query1(int node, int qlow, int qhigh, int l, int r){
    if(l >= qlow && r <= qhigh){
        return segtree1[node];
    }
    if(r < qlow || l > qhigh){
        return inf;
    }
    int md = (l+r)/2;
    return min(query1(node*2, qlow, qhigh, l, md), query1(node*2+1, qlow, qhigh, md+1, r));
}

void update(int ind, ll v, ll u){
    segtree[ind+n1] = min(v, segtree[ind+n1]);
    segtree1[ind+n1] = min(u, segtree1[ind+n1]);
    for(int j = (ind+n1)/2; j >= 1;j/=2){
        segtree[j] = min(segtree[j*2], segtree[j*2+1]);
        segtree1[j] = min(segtree1[j*2], segtree1[j*2+1]);    
    }
}

int cnt(int n){
    int c = 0;
    while(n > 0){
        if(n&1)c++;
        n/=2;
    }
    return c;
}

void run_case(){
    int n, m;cin >> n >> m;
    for(int i = 0;i < n;i++){
        dp1[i] = dp2[i] = inf;
    }
    set<int> s;
    for(int i = 0;i < n;i++){
        cin >> a[i] >> b[i] >> c[i] >> d[i];
        s.insert(a[i]);
        s.insert(b[i]);
        s.insert(c[i]);
    }
    n1 = s.size();
    while(cnt(n1) != 1){
        n1++;
    }
    for(int i = 1;i < 2*n1;i++){
        segtree[i] = segtree1[i] = inf;
    }
    int k = 0;
    for(int x : s){
        mp[x] = k++;
    }
    ll ans = inf;
    for(int i = 0;i < n;i++){
        if(a[i] == 1)dp1[i] = 0;
        if(b[i] == m)dp2[i] = 0;
        dp1[i] = min(dp1[i],query(1, mp[a[i]], mp[b[i]], 0, n1-1));
        dp2[i] = min(dp2[i],query1(1, mp[a[i]], mp[b[i]], 0, n1-1));
        dp1[i] += d[i];
        dp2[i] += d[i];
        update(mp[c[i]], dp1[i], dp2[i]);
        ans = min(ans, dp1[i]+dp2[i]-d[i]);
    }
    cout << (ans >= inf ? -1 : ans) << endl;
}

int main(){
    speed;
    int t;
    //cin >> t;
    t = 1;
    while(t--){
        run_case();
    }
}

/*
    NEVER GIVE UP!
    DOING SMTHNG IS BETTER THAN DOING NTHNG!!!
    Your Guide when stuck:
    - Continue keyword only after reading the whole input
    - Don't use memset with testcases
    - Check for corner cases(n=1, n=0)
    - Check where you declare n(Be careful of declaring it globally and in main)
*/

Compilation message

pinball.cpp: In function 'void usaco_problem()':
pinball.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen("milkvisits.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pinball.cpp:34:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     freopen("milkvisits.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pinball.cpp: In function 'void init()':
pinball.cpp:40:8: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 | freopen("input.txt", "r", stdin);
      | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
pinball.cpp:42:8: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 | freopen("output.txt", "w", stdout);
      | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 424 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 424 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 596 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 724 KB Output is correct
20 Correct 3 ms 424 KB Output is correct
21 Correct 2 ms 596 KB Output is correct
22 Correct 2 ms 724 KB Output is correct
23 Correct 2 ms 724 KB Output is correct
24 Correct 3 ms 724 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 424 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 596 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 724 KB Output is correct
20 Correct 3 ms 424 KB Output is correct
21 Correct 2 ms 596 KB Output is correct
22 Correct 2 ms 724 KB Output is correct
23 Correct 2 ms 724 KB Output is correct
24 Correct 3 ms 724 KB Output is correct
25 Correct 30 ms 3404 KB Output is correct
26 Correct 93 ms 8436 KB Output is correct
27 Correct 265 ms 18708 KB Output is correct
28 Correct 128 ms 7492 KB Output is correct
29 Correct 229 ms 16504 KB Output is correct
30 Correct 220 ms 10084 KB Output is correct
31 Correct 506 ms 31260 KB Output is correct
32 Correct 443 ms 22732 KB Output is correct
33 Correct 58 ms 9304 KB Output is correct
34 Correct 249 ms 26180 KB Output is correct
35 Correct 303 ms 51788 KB Output is correct
36 Correct 690 ms 51936 KB Output is correct
37 Correct 518 ms 51948 KB Output is correct
38 Correct 464 ms 51920 KB Output is correct