oj.uz

답안 #524170

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
524170 2022-02-08T18:18:12 Z nickmet2004 Simple game (IZhO17_game) C++11
0 / 100
 2 ms 332 KB 
#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N = 1e6 + 5;
int n,m, a[N],  F[2000005];
void upd(int i , int d){
    while(i <= n){
        F[i] += d;
        i += i & -i;
    }
}
int get(int i){
    int s= 0;
    while(i){
        s += F[i] , i -= i&-i;
    }
    return s;
}
void M(int A , int p , int h){
    if(A > h){
        upd(h , +1);
        if(a[p] >= A){
            upd(a[p] + 1 , +1);
            upd(A , -2);
        }
        else {
            upd(a[p] , -1);
        }
    }else {
        upd(h + 1 , -1);
        if(a[p] >= A){
            upd(a[p]+ 1 , +1);
        }else {
            upd(a[p] , -1);
            upd(A+1 , +2);
        }
    }
}
 main (){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n>>m;
    for(int i =1; i<= n; ++i)cin>>a[i];
    for(int i = 1; i< n; ++i){
        int x = a[i] , y = a[i + 1];
        if(x > y)swap(x , y);
        upd(x , 1),
        upd(y + 1 ,-1);
    }
    while(m--){
        int x;
        cin >> x;
        if(x==1){
            int p , h;
            cin >> p >> h;
            int A=-1 , B=-1;
            if(p==1) A = a[p+1];
            else if(p==n) B = a[p-1];
            else A = a[p-1] , B = a[p+1];
            if(A != -1)M(A , p , h);
            if(B != -1) M(B , p , h);
            a[p]=h;
        }else {
            int h;cin>>h;
            cout << get(h)<<endl;
        }
    }
}

Compilation message

game.cpp:39:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   39 |  main (){
      |  ^~~~

Subtask #1
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Incorrect 2 ms 332 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Incorrect 2 ms 332 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Incorrect 2 ms 332 KB Output isn't correct
3 Halted 0 ms 0 KB -