Submission #1306383

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306383		iamsazidh	Deda (COCI17_deda)	C++20	140 / 140	576 ms	4556 KiB

deda

//ᴇᴀᴄʜ ᴘᴇʀꜱᴏɴ ᴡɪʟʟ ᴏɴʟʏ ʜᴀᴠᴇ ᴡʜᴀᴛ ᴛʜᴇʏ ᴇɴᴅᴇᴀᴠᴏᴜʀᴇᴅ ᴛᴏᴡᴀʀᴅꜱ [53:39]
//Author: Sazid Hasan
#include <bits/stdc++.h>
using namespace std;

typedef long long              ll;
typedef double                 dl;
typedef vector<int>            vi;
typedef vector<vector<int>>    vii;
typedef vector<ll>             vl;
typedef vector<bool>           vb;
typedef pair<int,int>         pii;
typedef pair<ll, ll>          pll;

#define ff                first
#define ss                second
#define all(a)            a.begin(),a.end()
#define gcd(a,b)          __gcd(a,b)
#define lcm(a,b)          (a*(b/gcd(a,b)))
#define file();           freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define spc               " "

#ifdef ONLINE_JUDGE
    #define debarr(array)
    #define deb(x)
    #define del
    #define debug(...)
#else
    #define debarr(array)  for(int w = 0; w < array.size(); w++) cerr << #array << "-" << w << " = " << array[w] << endl;
    #define deb(x)         cerr << #x << " = " << x << endl;
    #define del cerr << '\n';
    #define debug(...) _debug(#__VA_ARGS__, __VA_ARGS__);
    
    template <class X, class Y>
    ostream& operator<<(ostream& os, const pair<X, Y>& p) {
        return os << "(" << p.first << ", " << p.second << ")";
    }
    
    template <class Ch, class Tr, class Container>
    basic_ostream<Ch, Tr>& operator<<(basic_ostream<Ch, Tr>& os, const Container& x) {
        int i = 0, n = distance(x.begin(), x.end());
        os << "{ ";
        for (const auto& y : x)
            os << y << (++i < n ? ", " : "");
        return os << " }";
    }
    
    template <typename... Args>
    void _debug(const char* names, Args&&... args) {
        string_view s(names);
        cerr << "{ ";
        size_t i = 0, cnt = 0, n = sizeof...(args);
    
        auto next = [&]() {
            while (i < s.size() && (s[i] == ' ' || s[i] == ',')) ++i;
            size_t st = i;
            while (i < s.size() && s[i] != ',') ++i;
            return s.substr(st, i - st);
        };
    
        ((cerr << next() << ": " << args << (++cnt < n ? ", " : "")), ...);
        cerr << " }" << '\n';
    }
#endif


const double PI =         acos(-1);
const int MOD =           1000000007;
const int inf =           (2147483647);
const double EPS =        1e-6;
const int MAXN =          1e5+10;

class segTree{
    private:
        vi tr; int n;
    public:
        segTree(int _n){
            n = _n;
            tr.resize((n+3)*4, inf);
        }
        void update(int x, int lx, int rx, int idx, int v){
            if(lx==rx){
                tr[x] = v;
            }else{
                int  m = (lx+rx)/2;
                if(idx<=m) update(x*2+1, lx, m, idx, v);
                else update(x*2+2, m+1, rx, idx, v);
                tr[x] = min(tr[x*2+1], tr[x*2+2]);
            }
            return;
        }
        int query(int x, int lx, int rx, int l, int r){
            if(lx>r || rx<l) return inf;
            if(lx>= l && rx<=r) return tr[x];
            int m = (lx+rx)>>1;
            return min(query(x*2+1, lx, m, l, r), query(x*2+2, m+1, rx, l, r));
        }
        void update(int idx, int v){
            update(0, 0, n, idx, v);
        }
        int query(int l, int r){
            return query(0, 0, n, l, r);
        }
};

bool solve(){
    int n, q; cin >> n >> q;
    segTree tr(n);
    while(q--){
        char c;  cin >> c;
        if(c=='M'){
            int age, station; cin >> station >> age;
            tr.update(age, station);
        }else{
            int stop, child; cin >> stop >> child;
            if(tr.query(child, n)>stop){
                cout << -1 << endl;
            }else{
                int st = child, end = n, mid;
                while(st<=end){
                    mid = (st+end) >> 1;
                    if(tr.query(child, mid)<=stop) end = mid-1;
                    else st = mid+1;
                }
                cout << st << endl;
            }
        }
    }

    return 1;
}

int main(){
    ios::sync_with_stdio(false); cin.tie(nullptr);
    int testcase = 1;
    //cin >> testcase;
    for(int tc = 1; tc <= testcase; tc++){
        //cerr << "TESTCASE - " << tc << endl;
        solve();
        //cout << (solve() ? "YES" : "NO") << '\n';
        cerr << endl;
    }

    return 0;
}

• Subtask 1: 140 / 140