제출 #658821

#제출 시각아이디문제언어결과실행 시간메모리
658821aebovT-Covering (eJOI19_covering)C++14
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define int int64_t #define pb push_back #define F first #define S second #define pii pair<int ,int> #define all(a) a.begin(),a.end() #define loop(i,s,e) for(int i=s;i<e;i++) using namespace std; const int N = (int)1e6 + 6; int n, m, k, g[N], okt = 0; vector<int> vc, adj[N]; int hx[] = {-1, 1, 0, 0}; int hy[] = {0, 0, 1, -1}; bool vis[N], ok[N]; bool valid(int i,int j){return (i >= 0 && i < n && j >= 0 && j < m);} void dfs(int v){ vis[v] = 1; if(!ok[v])vc.pb(g[v]); else okt ++; for(auto u : adj[v]) { if(vis[u])continue; dfs(u); } } inline bool in_limits(int i, int j){ return (i>=0 && i<n && j>=0 && j<m); } int32_t main(){ // ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin >> n >> m; for(int i = 0; i < n; i ++) for(int j = 0; j < m;j ++){ int v = i*m +j; cin >> g[v]; ok[v] = vis[v] = 0; } cin >> k; int ans = 0; for(int i = 0; i < k; i ++){ int r, c;cin >> r >> c; int v = r*m+c; // cout << "V : " << v << endl; ok[v] = 1, ans += g[v]; vector<pii> d = {{-1,0}, {1,0}, {0,1}, {0,-1}}; for(auto it:d) { int di = it.F, dj = it.S; int ni = r + di, nj = c + dj; int u = ni*m+nj; if (!in_limits(ni, nj)) continue; adj[v].pb(u); adj[u].pb(v); } } for(int r = 0; r < n; r ++){ for(int c = 0; c < m; c ++){ int v = r*m + c; int v = r*m+c; if(!vis[v] && ok[v]){ okt=0; vc.clear(); dfs(v); if(vc.size() < 3*okt){ cout << "No"; return 0; } sort(all(vc)); loop(i,1,3*okt+1) ans+=vc[vc.size()-i]; } } } cout << ans << "\n"; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

covering.cpp: In function 'int32_t main()':
covering.cpp:62:8: error: redeclaration of 'int64_t v'
   62 |    int v = r*m+c;
      |        ^
covering.cpp:61:8: note: 'int64_t v' previously declared here
   61 |    int v = r*m + c;
      |        ^
covering.cpp:67:30: warning: comparison of integer expressions of different signedness: 'std::vector<long int>::size_type' {aka 'long unsigned int'} and 'int64_t' {aka 'long int'} [-Wsign-compare]
   67 |                 if(vc.size() < 3*okt){
      |                    ~~~~~~~~~~^~~~~~~