Submission #484872

#TimeUsernameProblemLanguageResultExecution timeMemory
484872ETKThe Collection Game (BOI21_swaps)C++14
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> #include "swaps.h" #define rep(i,a,b) for(int i=(a);i<=(b);++i) #define fi first #define se second #define pii pair<int,int> using namespace std; vector <int> r; vector <pii> Q; void Schedule(int i,int j){ schedule(r[i],r[j]); Q.push_back({i,j}); } void Visit(){//交换逆序元素,最多调用50次 if(!Q.size())return; vector <int> res=visit(); for(int t:res)if(!t)swap(r[Q[i].fi],r[Q[i].se]); Q.clear(); } void solve(int n,int q){ rep(i,1,n)r.push_back(i); for(int k=2;k<=2*n;k<<=1){ rep(i,0,n-1){ int x=i^(k-1); if(i<x&&x<n)Schedule(i,x); } Visit(); for(int j=k>>2;j;j>>=1){ rep(i,0,n-1){ int x=i^j; if(i<x&&x<n)Schedule(i,j); } Visit(); } } answer(r); }

Compilation message (stderr)

swaps.cpp: In function 'void Visit()':
swaps.cpp:17:34: error: 'i' was not declared in this scope
   17 |     for(int t:res)if(!t)swap(r[Q[i].fi],r[Q[i].se]);
      |                                  ^