Submission #964723

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
964723	2024-04-17T12:01:39 Z	BhavayGoyal	Meteors (POI11_met)	C++14	74 / 100	1048 ms	30176 KB

#include <bits/stdc++.h>
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<class T> using oset = 
            tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define int long long
#define ld long double
#define ar array
#define vi vector<int>
#define vii vector<vector<int>>
#define pii pair<int, int>
#define pb push_back
#define all(x) x.begin(), x.end()
#define f first
#define s second
#define endl "\n"

const int MOD = 1e9+7;
const int inf = 1e9;
const int linf = 1e18;

const int d4i[4]={-1, 0, 1, 0}, d4j[4]={0, 1, 0, -1};
const int d8i[8]={-1, -1, 0, 1, 1, 1, 0, -1}, d8j[8]={0, 1, 1, 1, 0, -1, -1, -1};

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());


// -------------------------------------------------- Main Code --------------------------------------------------

struct bit {
    int n;
    vi tree;

    bit(int N) {n = N+5; tree = vi(n+2);}
    void update(int idx, int val) { for (idx; idx <= n; idx += (idx&-idx)) tree[idx] += val; }
    int sum(int idx) { int ans = 0; for (idx; idx; idx -= (idx&-idx)) ans += tree[idx]; return ans; }
};

struct state { int l, r; };

const int N = 3e5+5;

void sol() {
    int n, m; cin >> n >> m;
    int req[n+1], ans[n+1];
    vi positions[n+1];
    for (int i = 1; i <= n; i++) ans[i] = -1;

    for (int i = 1; i <= m; i++) {
        int x; cin >> x;
        positions[x].pb(i);
    }

    for (int i = 1; i <= n; i++) cin >> req[i];

    int q; cin >> q;
    array<int, 3> queries[q+1];
    for (int i = 1; i <= q; i++) {
        int a, b, c; cin >> a >> b >> c;
        queries[i] = {a, b, c};
    }

    state currState[n+1];
    for (int i = 1; i <= n; i++) currState[i] = {1, q};

    for (int temp = 0; temp <= 25; temp++) {
        vector<int> query[q+1];
        for (int i = 1; i <= n; i++) {
            if (currState[i].l > currState[i].r) continue;
            if (temp == 25) assert(false);
            int mid = (currState[i].l+currState[i].r)/2;
            query[mid].push_back(i);
        }
        bit tree(m+5);
        for (int i = 1; i <= q; i++) {
            int l = queries[i][0], r = queries[i][1], val = queries[i][2];
            if (l > r) {
                swap(l, r);
                tree.update(r, val);
                tree.update(1, val);
                tree.update(l+1, -val);
            }
            else {
                tree.update(l, val);
                tree.update(r+1, -val);
            }

            for (auto j : query[i]) {
                int ct = 0;
                for (auto x : positions[j]) {
                    ct += tree.sum(x);
                }
                int &l = currState[j].l, &r = currState[j].r, mid = (l+r)/2;
                if (ct >= req[j]) r = mid-1, ans[j] = mid;
                else l = mid+1;
            }
        }
    }

    for (int i = 1; i <= n; i++) {
        if (ans[i] == -1) cout << "NIE" << endl;
        else cout << ans[i] << endl;
    }
}

signed main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t = 1;
    // cin >> t; 
    while (t--) {
        sol();
    }
    return 0;
}

Compilation message

met.cpp: In member function 'void bit::update(long long int, long long int)':
met.cpp:40:42: warning: statement has no effect [-Wunused-value]
   40 |     void update(int idx, int val) { for (idx; idx <= n; idx += (idx&-idx)) tree[idx] += val; }
      |                                          ^~~
met.cpp: In member function 'long long int bit::sum(long long int)':
met.cpp:41:42: warning: statement has no effect [-Wunused-value]
   41 |     int sum(int idx) { int ans = 0; for (idx; idx; idx -= (idx&-idx)) ans += tree[idx]; return ans; }
      |                                          ^~~

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	2 ms	604 KB	Output is correct

Subtask #3
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	75 ms	4176 KB	Output is correct
2	Correct	115 ms	5908 KB	Output is correct
3	Correct	87 ms	4808 KB	Output is correct

Subtask #4
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	94 ms	4576 KB	Output is correct
2	Correct	99 ms	4524 KB	Output is correct
3	Correct	117 ms	5860 KB	Output is correct
4	Correct	24 ms	2908 KB	Output is correct

Subtask #5
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	87 ms	4476 KB	Output is correct
2	Correct	97 ms	5792 KB	Output is correct
3	Correct	48 ms	2832 KB	Output is correct
4	Correct	95 ms	5256 KB	Output is correct

Subtask #6
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	89 ms	3660 KB	Output is correct
2	Correct	111 ms	4564 KB	Output is correct
3	Correct	84 ms	3932 KB	Output is correct
4	Correct	113 ms	6132 KB	Output is correct

Subtask #7
0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1006 ms	30176 KB	Output is correct
2	Incorrect	850 ms	19248 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #8
0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1048 ms	29256 KB	Output is correct
2	Incorrect	892 ms	19200 KB	Output isn't correct
3	Halted	0 ms	0 KB	-