제출 #48392

#제출 시각아이디문제언어결과실행 시간메모리
48392aleksamiSimple game (IZhO17_game)C++14
0 / 100
3 ms1136 KiB
#include <bits/stdc++.h> using namespace std; #define MAXN 100005 #define MAXH 1000005 int a[MAXN]; int bit[MAXN]; void update(int b[],int idx,int val) { while(idx < MAXN) { b[idx]+=val; idx+=idx&(-idx); } } int get(int b[],int idx) { int s=0; while(idx > 0) { s+=b[idx]; idx-=idx&(-idx); } return s; } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); int n,q; cin >> n >> q; for(int i = 0; i < n; i++) { cin >> a[i]; update(bit,a[i],1); } while(q--) { int t; cin >> t; if(t==1) { int pos,val; cin >> pos >> val; pos--; update(bit,a[pos],-1); a[pos]=val; update(bit,a[pos],+1); } else { int h; cin >> h; cout << get(bit,h) << "\n"; } } return 0; }
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