Submission #1234429

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234429		vahagng	Simple game (IZhO17_game)	C++20	100 / 100	356 ms	67420 KiB

game

//----------vahagng----------//
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
using namespace std;
// using namespace __gnu_pbds;
 
// template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif
 
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
 
template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {cerr << v[i] << " ";} cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
 
#define ll long long
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define ld long double
#define sz(v) v.size()
#define endl '\n'
 
const ll inf = 1e18, mod = 1e9+7, mod2=998244353;
 
void SetIO(string str = "") {
    if (str != "") {
        freopen((str + ".in").c_str(), "r", stdin);
        freopen((str + ".out").c_str(), "w", stdout);
    } else {
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    }
}
 
void FastIO(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}
 
const int N = 1e6+10;

ll n, m, y[N];

struct segtree{
    struct Node{
        ll lazy, sum;  
    };
    int size = 1;
    vector<Node>stree;
 
    void init(){
        while(size < N) size <<= 1;
        stree.assign(4*size, {0, 0});
    }
 
    void push(int x, int lx, int rx){
        if(rx - lx == 1){
            return;
        }
        stree[2*x+1].lazy += stree[x].lazy;
        stree[2*x+2].lazy += stree[x].lazy;
        int m = (lx + rx)/2;
        stree[2*x+1].sum += (m - lx)*stree[x].lazy;
        stree[2*x+2].sum += (rx - m)*stree[x].lazy;
        stree[x].lazy = 0;
    }
 
    void upd(int l, int r, ll v, int x, int lx, int rx){
        push(x, lx, rx);
        if(lx >= r || rx <= l) return ;
        if(lx >= l && rx <= r){
            stree[x].lazy += v;
            stree[x].sum += (rx - lx)*v;
            return;
        }
        int m = (lx + rx)/2;
        upd(l, r, v, 2*x+1, lx, m);
        upd(l, r, v, 2*x+2, m, rx);
        stree[x].sum = (stree[2*x+1].sum + stree[2*x+2].sum);
    }
 
    ll qry(int l, int r, int x, int lx, int rx){
        push(x, lx, rx);
        if(lx >= r || rx <= l){
            return 0;
        }
        if(lx >= l && rx <= r){
            return stree[x].sum;
        }
        int m = (lx + rx)/2;
        ll ans_l = qry(l, r, 2*x+1, lx, m);
        ll ans_r = qry(l, r, 2*x+2, m, rx);
        return (ans_l + ans_r);
    }
 
    void upd(int l, int r, ll val){
        upd(l, r, val, 0, 0, size);
    }
 
    ll qry(int l, int r){
        return qry(l, r, 0, 0, size);
    }
} st;

void solve(int tc){
    cin >> n >> m;
    for(int i = 1; i <= n; i++){
        cin >> y[i];
    }
    st.init();
    for(int i = 1; i < n; i++){
        st.upd(min(y[i], y[i+1]), max(y[i], y[i+1]) + 1, 1);
        if(i != 1) st.upd(y[i], y[i] + 1, -1);
    }
    while(m--){
        int type;
        cin >> type;
        if(type == 1){
            int pos;
            ll val;
            cin >> pos >> val;
            if(pos == 1){
                st.upd(min(y[pos], y[pos+1]), max(y[pos], y[pos+1]) + 1, -1);
            }else if(pos == n){
                st.upd(min(y[pos-1], y[pos]), max(y[pos-1], y[pos]) + 1, -1);
            }else{
                st.upd(y[pos], y[pos] + 1, 1);
                st.upd(min(y[pos], y[pos+1]), max(y[pos], y[pos+1]) + 1, -1);
                st.upd(min(y[pos-1], y[pos]), max(y[pos-1], y[pos]) + 1, -1);
            }
            y[pos] = val;
            if(pos == 1){
                st.upd(min(y[pos], y[pos+1]), max(y[pos], y[pos+1]) + 1, 1);
            }else if(pos == n){
                st.upd(min(y[pos-1], y[pos]), max(y[pos-1], y[pos]) + 1, 1);
            }else{
                st.upd(y[pos], y[pos] + 1, -1);
                st.upd(min(y[pos], y[pos+1]), max(y[pos], y[pos+1]) + 1, 1);
                st.upd(min(y[pos-1], y[pos]), max(y[pos-1], y[pos]) + 1, 1);
            }
        }else{
            ll h;
            cin >> h;
            cout << st.qry(h, h + 1) << endl;
        }
    }
}
 
void precalc(){
    
}
 
int main() {
    // SetIO("moocast");
    FastIO();
    int test_case = 1;
    // cin >> test_case;
    precalc();
    int cnt = 1;
    while (test_case--){
      solve(cnt++);
    }
    return 0;
}

Compilation message (stderr)

game.cpp: In function 'void SetIO(std::string)':
game.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         freopen((str + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
game.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen((str + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
game.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
game.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 22 / 22
• Subtask 2: 27 / 27
• Subtask 3: 51 / 51