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제출 #1111622

#제출 시각아이디문제언어결과실행 시간메모리
1111622epicci23자리 배치 (IOI18_seats)C++17
컴파일 에러
0 ms0 KiB
#include "bits/stdc++.h" #include "seats.h" //#define int long long #define all(v) v.begin() , v.end() #define sz(a) (int)a.size() using namespace std; const int N = 1e6 + 5; const int INF = (int) 1e9; struct Fenwick{ // 1-indexed yap!! vector<int> fw; Fenwick(int _n,int _def){ fw.assign(_n,_def); } inline void upd(int c,int u){ for(;c<N;c+=c&-c) fw[c]+=u; } inline int query(int c,int res=0){ for(;c;c-=c&-c) res+=fw[c]; return res; } }; vector<array<int,2>> go; void give_initial_chart(int H, int W, vector<int> R, vector<int> C) { int n=H,m=W; //Fenwick F(N,0); go.resize(n*m+5); for(int i=0;i<n*m;i++){ int a=R[i],b=C[i]; go[i]={a,b}; } //int mnr[n*m+5],mxr[n*m+5],mnc[n*m+5],mxc[n*m+5]; /* int Mnr=INF,Mxr=-INF,Mnc=INF,Mxc=-INF; for(int i=0;i<n*m;i++){ int a = go[i][0] , b = go[i][1]; Mnr=min(Mnr,a); Mxr=max(Mxr,a); Mnc=min(Mnc,b); Mxc=max(Mxc,b); if((Mxc-Mnc+1)*(Mxr-Mnr+1)==i+1) F.upd(i+1,1); }*/ //cout << F.query(n*m) << '\n'; } int swap_seats(int a, int b) { int ans=0; swap(go[a],go[b]); int Mnr=INF,Mxr=-INF,Mnc=INF,Mxc=-INF; for(int i=0;i<n*m;i++){ int a = go[i][0] , b = go[i][1]; Mnr=min(Mnr,a); Mxr=max(Mxr,a); Mnc=min(Mnc,b); Mxc=max(Mxc,b); if((Mxc-Mnc+1)*(Mxr-Mnr+1)==i+1) ans++; } return ans; } /*void _(){ int n,m,q; cin >> n >> m >> q; Fenwick F(N,0); int ar[n+5][m+5]; array<int,2> go[n*m+5]; for(int i=0;i<n*m;i++){ int a,b; cin >> a >> b; ar[a][b]=i; go[i]={a,b}; } int mnr[n*m+5],mxr[n*m+5],mnc[n*m+5],mxc[n*m+5]; int Mnr=INF,Mxr=-INF,Mnc=INF,Mxc=-INF; for(int i=0;i<n*m;i++){ int a = go[i][0] , b = go[i][1]; Mnr=min(Mnr,a); Mxr=max(Mxr,a); Mnc=min(Mnc,b); Mxc=max(Mxc,b); if((Mxc-Mnc+1)*(Mxr-Mnr+1)==i+1) F.upd(i+1,1); } cout << F.query(n*m) << '\n'; } int32_t main(){ cin.tie(0); ios::sync_with_stdio(0); int tc=1;//cin >> tc; while(tc--) _(); return 0; }*/

컴파일 시 표준 에러 (stderr) 메시지

seats.cpp: In function 'int swap_seats(int, int)':
seats.cpp:61:17: error: 'n' was not declared in this scope
   61 |   for(int i=0;i<n*m;i++){
      |                 ^
seats.cpp:61:19: error: 'm' was not declared in this scope
   61 |   for(int i=0;i<n*m;i++){
      |                   ^