제출 #873480

#제출 시각아이디문제언어결과실행 시간메모리
873480Danet이상한 기계 (APIO19_strange_device)C++14
컴파일 에러
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; #pragma GCC optimize("O3") #define tof_io ios_base::sync_with_stdio(false);cin.tie(0) , cout.tie(0); #define double long double #define int long long #define pb push_back #define all(x) x.begin(),x.end() #define endl '\n' #define sz(x) x.size() //const int mod = 998244353; //998244353 1e9+7 1e9+9 const int N = 5e3 + 23; const int lg = 23; const int inf = 1e9; int fac[N]; int inv[N]; int add = 0; //int dnt_pow (int a, int b, int md = mod){int ans = 1; while(b){if(b&1){ans = (a*ans)%md;}a = (a*a)%md;b >>= 1;}return ans ;} //void dnt_bld (){fac[0] = 1; inv[0] = dnt_pow(fac[0],mod-2) ;for(int i = 1 ; i < N ; i++) {fac[i] = (fac[i-1] * i) % mod;inv[i] = dnt_pow( fac[i] , mod-2);}} //int dnt_ncr (int r,int n){if(r>n) return 0; return fac[n] * inv[r] % mod * inv[n-r] % mod;} void add (set<pair<int, int>>& st, int l, int r) { auto it = st.lower_bound({l, 0}), tmp = it; if (it != st.begin() && (--tmp)->second >= l) { l = tmp->first; r = max(r, tmp->second); st.erase(tmp); } while (it != st.end()) { if (r >= it->first) { r = max(r, it->second); it = st.erase(it); } else break; } st.insert({l, r}); } int32_t main () { int n, a, b; cin >> n >> a >> b; int mod; if (a / gcd(a, b+1) > inf / b) mod = inf; else mod = a / gcd(a, b+1) * b; set<pair<int, int>> st; while (n--) { int l, r; cin >> l >> r; if (r-l+1 >= mod) { cout << mod << endl; return 0; } if (l % mod > r % mod) { add(st, 0, r % mod); add(st, l % mod, mod-1); } else add(st, l % mod, r % mod); } int ans = 0; for (auto& [l, r] : st) ans += r-l+1; cout << ans ; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

strange_device.cpp:23:48: error: 'void add(std::set<std::pair<long long int, long long int> >&, long long int, long long int)' redeclared as different kind of entity
   23 | void add (set<pair<int, int>>& st, int l, int r)
      |                                                ^
strange_device.cpp:19:5: note: previous declaration 'long long int add'
   19 | int add = 0;
      |     ^~~
strange_device.cpp: In function 'int32_t main()':
strange_device.cpp:49:10: error: 'gcd' was not declared in this scope
   49 |  if (a / gcd(a, b+1) > inf / b) mod = inf;
      |          ^~~
strange_device.cpp:63:22: error: 'add' cannot be used as a function
   63 |    add(st, 0, r % mod);
      |                      ^
strange_device.cpp:64:26: error: 'add' cannot be used as a function
   64 |    add(st, l % mod, mod-1);
      |                          ^
strange_device.cpp:65:34: error: 'add' cannot be used as a function
   65 |   } else add(st, l % mod, r % mod);
      |                                  ^
strange_device.cpp:68:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   68 |  for (auto& [l, r] : st) ans += r-l+1;
      |             ^