제출 #962420

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
962420		hariaakas646	Deda (COCI17_deda)	C++14	140 / 140	80 ms	8016 KiB

deda

#include <bits/stdc++.h>

using namespace std;

#define scd(t) scanf("%d", &t)
#define sclld(t) scanf("%lld", &t)
#define forr(i, j, k) for (int i = j; i < k; i++)
#define frange(i, j) forr(i, 0, j)
#define all(cont) cont.begin(), cont.end()
#define mp make_pair
#define pb push_back
#define f first
#define s second
typedef long long int lli;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<lli> vll;
typedef vector<string> vs;
typedef vector<pii> vii;
typedef vector<vi> vvi;
typedef map<int, int> mpii;
typedef set<int> seti;
typedef multiset<int> mseti;
typedef long double ld;


void usaco()
{
    freopen("/media/hariaakash646/785EF1075EF0BF46/CompetitiveProgramming/input.in", "r", stdin);
//    freopen("problem.out", "w", stdout);
}

void fastio()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}

template <class T>
struct SegTree
{
    int size = 1, n;
    vector<T> segtree;
    vector<T> vec;

    T def; // Assign a value

    void init(int l, T defv)
    {
        n = l;
        def = defv;

        while (size < n)
            size *= 2;

        segtree.assign(2 * size, def);
        vec.assign(size, def);
    }

    T operation(T x, T y)
    {
        return min(x, y); // Any required operation
    }

    void recalculate(int x)
    {
        segtree[x] = operation(segtree[2 * x + 1], segtree[2 * x + 2]);
    }

    void build(int x, int l, int r)
    {
        if (l == r)
        {
            segtree[x] = vec[l];
            return;
        }
        int mid = (l + r) / 2;
        build(2 * x + 1, l, mid);
        build(2 * x + 2, mid + 1, r);
        recalculate(x);
    }

    void build()
    {
        build(0, 0, size - 1);
    }

    void set(int id, T val)
    {
        vec[id] = val;
    }

    void update(int x, int l, int r, int id, T val)
    {
        if (l == r)
        {
            segtree[x] = val;
            return;
        }
        int mid = (l + r) / 2;
        if (id <= mid)
        {
            update(2 * x + 1, l, mid, id, val);
        }
        else
        {
            update(2 * x + 2, mid + 1, r, id, val);
        }
        recalculate(x);
    }

    void update(int id, T val)
    {
        update(0, 0, size - 1, id, val);
    }
    int ans;
    void query(int x, int l, int r, int lx, int rx, int v)
    {
        if (lx > r || rx < l || ans!=-1 || segtree[x] > v)
        {
            return;
        }
        if (l == r)
        {
            ans = l;
        }
        int mid = (l + r) / 2;
        query(2 * x + 1, l, mid, lx, rx, v);
        query(2 * x + 2, mid + 1, r, lx, rx, v);
        
    }

    int query(int lx, int rx, int v)
    {
        ans = -1;
        query(0, 0, size - 1, lx, rx, v);
        return ans;
    }   
};


int main() {
    // usaco();
    fastio();
    int n, q;
    cin >> n >> q;

    SegTree<int> segtree;
    segtree.init(n+1, 2e9);
    segtree.build();

    frange(_, q) {
        char c;
        int x, a;
        cin >> c >> x >> a;
        // cout << x << " ";
        if(c == 'M') {
            segtree.update(a, x);
        }
        else {
            cout << segtree.query(a, n, x) << "\n";
        }
    }


}

컴파일 시 표준 에러 (stderr) 메시지

deda.cpp: In function 'void usaco()':
deda.cpp:30:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     freopen("/media/hariaakash646/785EF1075EF0BF46/CompetitiveProgramming/input.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 140 / 140