Submission #630227

#	Time	Username	Problem	Language	Result	Execution time	Memory
630227		Soul234	Deda (COCI17_deda)	C++14	140 / 140	88 ms	7936 KiB

deda

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

void DBG() { cerr << "]\n"; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << h; if(sizeof...(t)) cerr << ", ";
    DBG(t...);
}
#ifdef LOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif // LOCAL

#define FOR(i,a,b) for(int i = (a) ; i<(b) ; i++)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for(int i = (b)-1 ; i>=(a) ; i--)
#define R0F(i,a) ROF(i,0,a)
#define each(e,a) for(auto &e : (a))
#define sz(v) (int)(v).size()
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pb push_back
#define tcT template<class T
#define nl "\n"

using ll = long long;
using vi = vector<int>;
using pi = pair<int,int>;
using str = string;
tcT> using V = vector<T>;
tcT> using pqg = priority_queue<T,vector<T>,greater<T>>;

void setIO(string NAME = "") {
    cin.tie(0)->sync_with_stdio(0);
    if(sz(NAME)) {
        freopen((NAME + ".inp").c_str(),"r",stdin);
        freopen((NAME + ".out").c_str(),"w",stdout);
    }
}

tcT> bool ckmin(T&a, const T&b) {
    return b < a ? a=b,1 : 0; }
tcT> bool ckmax(T&a, const T&b) {
    return b > a ? a=b,1 : 0; }

const int MOD = 1e9 + 7;

struct SegTree {
    int N;
    vi mn;
    int comb(int a, int b) { return min(a,b); }
    void init(int _N) {
        N = _N;
        mn.assign(N*4 + 7, MOD);
    }
    void upd(int p, int val, int ind, int L, int R) {
        if(L > R) return;
        if(L == R) {
            mn[ind] = val;
            return;
        }
        int mid = (L + R) >> 1;
        if(p <= mid) upd(p, val, ind<<1, L, mid);
        else upd(p, val, ind<<1|1, mid+1, R);
        mn[ind] = comb(mn[ind<<1], mn[ind<<1|1]);
    }
    void upd(int p, int val) {
        upd(p, val, 1, 1, N);
    }
    int query(int pos, int val, int ind, int L, int R) {
        if(pos > R || L > R || mn[ind] > val) return -1;
        if(L == R) return L;
        int mid = (L + R) >> 1;
        int res = query(pos, val, ind<<1, L, mid);
        if(~res) return res;
        return query(pos, val, ind<<1|1, mid+1, R);
    }
    int query(int pos, int val) {
        return query(pos, val, 1, 1, N);
    }
};

int N, Q;
SegTree st;

void solve() {
    cin >> N >> Q;
    st.init(N);
    while(Q-- > 0) {
        char t;
        cin >> t;
        if(t == 'M') {
            int nval, pos;
            cin >> nval >> pos;
            st.upd(pos, nval);
        }
        else {
            int Y, B;
            cin >> Y >> B;
            cout << st.query(B, Y) << nl;
        }
    }
}

int main() {
    setIO();

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

    return 0;
}

Compilation message (stderr)

deda.cpp: In function 'void setIO(std::string)':
deda.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen((NAME + ".inp").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
deda.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen((NAME + ".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 140 / 140