제출 #1128760

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1128760		BilAktauAlmansur	Simple game (IZhO17_game)	C++20	100 / 100	269 ms	17852 KiB

game

#include <bits/stdc++.h>
#pragma optimize("g", on)
#pragma GCC optimize ("03")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
void Freopen () {
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
}
using namespace std;
#define fi first
#define se second
// #define int long long
const int N = 1e6 + 7, M = 1e6 + 1, mod = 1e9 + 7;

int n, m, a[N];
int tr[4 * N], add[4 * N];
void push(int v, int lx, int rx) {
    if(lx != rx) {
        add[v + v] += add[v], add[v + v + 1] += add[v];
    }
    tr[v] += (rx - lx + 1) * add[v];
    add[v] = 0;
}
void upd_seg(int l, int r, int x, int v, int lx, int rx) {
    push(v, lx, rx);
    if(lx > r || l > rx)return;
    if(lx >= l && r >= rx) {
        add[v] += x;
        push(v, lx, rx);
        return;
    }
    int m = (lx + rx) >> 1;
    upd_seg(l, r, x, v + v, lx, m);
    upd_seg(l, r, x, v + v + 1, m + 1, rx);
    tr[v] = tr[v + v] + tr[v + v + 1];
}
int get(int l, int r, int v, int lx, int rx) {
    push(v, lx, rx);
    if(lx > r || l > rx)return 0;
    if(lx >= l && r >= rx)return tr[v];
    int m = (lx + rx) >> 1;
    return get(l, r, v + v, lx, m) + get(l, r, v + v + 1, m + 1, rx);
}
void solve() {
	cin>>n>>m;
	for(int i = 1; i <= n; i++) {
		cin>>a[i];
	}
	for(int i = 2; i <= n; i++) {
		upd_seg(min(a[i - 1], a[i]), max(a[i - 1], a[i]), 1, 1, 1, M);
	}
	while(m -- ) {
		int tt;
		cin>>tt;
		if(tt == 1) {
			int ps, v;
			cin>>ps>>v;
			if(ps > 1)upd_seg(min(a[ps - 1], a[ps]), max(a[ps - 1], a[ps]), -1, 1, 1, M);
			if(ps < n)upd_seg(min(a[ps + 1], a[ps]), max(a[ps + 1], a[ps]), -1, 1, 1, M);
			a[ps] = v;
			if(ps > 1)upd_seg(min(a[ps - 1], a[ps]), max(a[ps - 1], a[ps]), 1, 1, 1, M);
			if(ps < n)upd_seg(min(a[ps + 1], a[ps]), max(a[ps + 1], a[ps]), 1, 1, 1, M);
		}else {
			int h;
			cin>>h;
			cout << get(h, h, 1, 1, M) << '\n';
		}
	}
}
signed main() {
	// freopen("duty.in", "r", stdin);
	// freopen("duty.out", "w", stdout);
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	//Freopen();
	int T = 1;
	// cin>>T;
	while(T --)solve();
}

컴파일 시 표준 에러 (stderr) 메시지

game.cpp: In function 'void Freopen()':
game.cpp:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
game.cpp:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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