제출 #843861

#제출 시각아이디문제언어결과실행 시간메모리
843861Dextar메기 농장 (IOI22_fish)C++17
컴파일 에러
0 ms0 KiB
#include <cstdio> #ifdef DEBUG #define D(X) X #else #define D(X) #endif #include <bits/stdc++.h> #define F first #define S second #define ll long long #define pi 3.14159265359 #define pub push_back #define pob pop_back #define pari pair<int,int> #define parli pair<long, long> using namespace std; const int INF = 1000 * 1000 * 1000; const int mod = 1000 * 1000 * 1000 + 7; ll max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w) { vector<vector<ll>> cnt2(3, vector<ll>(n+1, 0)); for(int i=0; i<m; i++) { if(x[i]%2==1) { odd = 1; } cnt2[x[i]][y[i]+1] += w[i]; all += w[i]; mx = max(mx, x[i]); } if(!odd) { return all; } for(int i=0; i<2; i++) { for(int j=1; j<=n; j++) { cnt2[i][j] += cnt2[i][j-1]; } } if(mx<=1) { if(n==2) { return max(cnt2[0][n], cnt2[1][n]); } else { ll res = cnt2[1][n], best = res; for(int j=1; j<=n; j++) { res = max(res, res+cnt2[0][j]-cnt2[1][j]); } return res; } } vector<vector<ll>> cnt(n + 1, vector<ll>(n+1, 0)); int odd = 0, mx = 0; ll all = 0; for(int i=0; i<m; i++) { cnt[x[i]][y[i]+1] += w[i]; } for(int i=0; i<n; i++) { for(int j=1; j<=n; j++) { cnt[i][j] += cnt[i][j-1]; } } vector<vector<ll>> pref(n+1, vector<ll>(n+1, 0)); vector<vector<ll>> suf(n+1, vector<ll>(n+1, 0)); vector<vector<vector<ll>>> dp(n+1, vector<vector<ll>>(n+1, vector<ll>(2, 0))); ll res = 0; for(int i=1; i<n; i++) { if(i==1) { pref[i-1][0] = 0; } else { pref[i-1][0] = dp[i-2][0][0]; } for(int j=1; j<=n; j++) { pref[i-1][j] = max(pref[i-1][j-1], dp[i-1][j][1] - cnt[i-1][j]); } suf[i-1][n] = cnt[i][n] + max(dp[i-1][n][0], dp[i-1][n][1]); for(int j=n-1; j>=1; j--) { suf[i-1][j] = max(suf[i-1][j+1], max(dp[i-1][j][0], dp[i-1][j][1]) + cnt[i][j]); } dp[i][0][0] = dp[i][0][1] = max(suf[i-1][1], dp[i-1][0][0]); for(int j=1; j<=n; j++) { dp[i][j][0] = suf[i-1][j] - cnt[i][j]; dp[i][j][1] = cnt[i-1][j] + pref[i-1][j]; if(i>1) { dp[i][j][1] = max(dp[i][j][1], cnt[i-1][j]+pref[i-2][j]); dp[i][j][1] = max(dp[i][j][1], suf[i-2][j]); } //res = max(res, max(dp[i][j][0], dp[i][j][1])); } } for(int i=0; i<n; i++) for(int j=0; j<=n; j++) { for(int bin=0; bin<2; bin++) res = max(res, dp[i][j][bin]); } return res; } /* int main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); D(freopen("input.txt","r",stdin);) //D(freopen("ouput.txt","w",stdout);) int t = 1; //cin >> t; loop: while(t--) { int n, m; cin >> n >> m; vector<int> x(m), y(m), w(m); for(int i=0; i<m; i++) { cin >> x[i]; } for(int i=0; i<m; i++) { cin >> y[i]; } for(int i=0; i<m; i++) { cin >> w[i]; } ll res = max_weights(n, m, x, y, w); cout << res; } return 0; } */

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:27:13: error: 'odd' was not declared in this scope
   27 |             odd = 1;
      |             ^~~
fish.cpp:30:9: error: 'all' was not declared in this scope; did you mean 'std::filesystem::perms::all'?
   30 |         all += w[i];
      |         ^~~
      |         std::filesystem::perms::all
In file included from /usr/include/c++/10/filesystem:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from fish.cpp:7:
/usr/include/c++/10/bits/fs_fwd.h:148:7: note: 'std::filesystem::perms::all' declared here
  148 |       all  =  0777,
      |       ^~~
fish.cpp:31:9: error: 'mx' was not declared in this scope; did you mean 'm'?
   31 |         mx = max(mx, x[i]);
      |         ^~
      |         m
fish.cpp:33:9: error: 'odd' was not declared in this scope
   33 |     if(!odd) {
      |         ^~~
fish.cpp:34:16: error: 'all' was not declared in this scope; did you mean 'std::filesystem::perms::all'?
   34 |         return all;
      |                ^~~
      |                std::filesystem::perms::all
In file included from /usr/include/c++/10/filesystem:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from fish.cpp:7:
/usr/include/c++/10/bits/fs_fwd.h:148:7: note: 'std::filesystem::perms::all' declared here
  148 |       all  =  0777,
      |       ^~~
fish.cpp:41:8: error: 'mx' was not declared in this scope; did you mean 'm'?
   41 |     if(mx<=1) {
      |        ^~
      |        m
fish.cpp:46:34: warning: unused variable 'best' [-Wunused-variable]
   46 |             ll res = cnt2[1][n], best = res;
      |                                  ^~~~
fish.cpp:54:9: warning: unused variable 'odd' [-Wunused-variable]
   54 |     int odd = 0, mx = 0;
      |         ^~~
fish.cpp:54:18: warning: unused variable 'mx' [-Wunused-variable]
   54 |     int odd = 0, mx = 0;
      |                  ^~
fish.cpp:55:8: warning: unused variable 'all' [-Wunused-variable]
   55 |     ll all = 0;
      |        ^~~