Submission #461223

#	Time	Username	Problem	Language	Result	Execution time	Memory
461223		dxz05	Trading (IZhO13_trading)	C++14	100 / 100	260 ms	18624 KiB

trading

#pragma GCC optimize("Ofast,O2,O3")
#pragma GCC target("avx2")

#include <bits/stdc++.h>

using namespace std;

void debug_out() { cerr << endl; }

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << "[" << H << "]";
    debug_out(T...);
}

#ifdef dddxxz
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

#define SZ(s) ((int)s.size())
#define all(x) (x).begin(), (x).end()
#define revall(x) (x).rbegin(), (x).rend()

clock_t startTime;

double getCurrentTime() {
    return (double) (clock() - startTime) / CLOCKS_PER_SEC;
}

#define MP make_pair

typedef long long ll;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const double eps = 0.00001;
const int MOD = 1e9;
const int INF = 1000000101;
const long long LLINF = 1223372000000000555;
const int N = 5e5 + 3e2;
const int M = 5522;

int n, m;
int t[N * 4];

void build(int v = 1, int tl = 1, int tr = n){
    if (tl == tr){
        t[v] = 1;
        return;
    }

    int tm = (tl + tr) >> 1;
    build(v + v, tl, tm);
    build(v + v + 1, tm + 1, tr);

    t[v] = t[v + v] + t[v + v + 1];
}

void update(int pos, int v = 1, int tl = 1, int tr = n){
    if (tl == tr){
        t[v] = 0;
        return;
    }

    int tm = (tl + tr) >> 1;
    if (pos <= tm) update(pos, v + v, tl, tm); else
        update(pos, v + v + 1, tm + 1, tr);

    t[v] = t[v + v] + t[v + v + 1];
}

int find(int k, int v = 1, int tl = 1, int tr = n){
    if (k > t[v]) return n + 1;
    if (tl == tr) return tl;
    int tm = (tl + tr) >> 1;
    if (t[v + v] >= k) return find(k, v + v, tl, tm); else
        return find(k - t[v + v], v + v + 1, tm + 1, tr);
}

int f[N];

void add(int x, int y){
    while (x < N){
        f[x] += y;
        x += (-x & x);
    }
}

int get(int x){
    int res = 0;
    while (x > 0){
        res += f[x];
        x -= (-x & x);
    }
    return res;
}

int ans[N];
int lf[N], rg[N], val[N];

void solve(int TC) {
    cin >> n >> m;

    vector<int> perm(m);
    for (int i = 1; i <= m; i++){
        cin >> lf[i] >> rg[i] >> val[i];
        perm[i - 1] = i;
    }

    for (int i = 1; i <= n; i++){
        add(i, 1);
    }

    build();

    sort(all(perm), [](int i, int j){
        return val[i] - lf[i] > val[j] - lf[j];
    });

    for (int i : perm){
        debug(i);
        int cur = get(lf[i]);
        if (get(lf[i]) - get(lf[i] - 1) == 0) cur++;

        debug(cur);

        int ind = find(cur);

        while (ind <= rg[i]){
            ans[ind] = val[i] + ind - lf[i];
            update(ind);
            add(ind, -1);
            debug(cur, ind);

            ind = find(cur);
        }
    }

    for (int i = 1; i <= n; i++){
        cout << ans[i] << ' ';
    }

}

int main() {
    startTime = clock();
    cin.tie(nullptr);
    cout.tie(nullptr);
    ios_base::sync_with_stdio(false);

    bool llololcal = false;
#ifdef dddxxz
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    llololcal = true;
#endif

    int TC = 1;
    //cin >> TC;

    for (int test = 1; test <= TC; test++) {
        debug(test);
        //cout << "Case #" << test << ": ";
        solve(test);
    }

    if (llololcal) cerr << endl << "Time: " << int(getCurrentTime() * 1000) << " ms" << endl;

    return 0;
}

Compilation message (stderr)

trading.cpp: In function 'void solve(int)':
trading.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
trading.cpp:121:9: note: in expansion of macro 'debug'
  121 |         debug(i);
      |         ^~~~~
trading.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
trading.cpp:125:9: note: in expansion of macro 'debug'
  125 |         debug(cur);
      |         ^~~~~
trading.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
trading.cpp:133:13: note: in expansion of macro 'debug'
  133 |             debug(cur, ind);
      |             ^~~~~
trading.cpp: In function 'int main()':
trading.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
trading.cpp:162:9: note: in expansion of macro 'debug'
  162 |         debug(test);
      |         ^~~~~

• Subtask 1: 100 / 100