제출 #893912

#제출 시각아이디문제언어결과실행 시간메모리
893912kigash수열 (APIO14_sequence)C++17
컴파일 에러
0 ms0 KiB
#include "bits/stdc++.h" using namespace std; // #pragma comment(linker, "/stack:200000000") // #pragma GCC optimize("Ofast") // #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native") using ll = long long; using ld = long double; #define pb push_back #define ff first #define ss second #define sz(x) (ll)(x).size() #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); } void IOIGold2024_InshAllah() { ios_base::sync_with_stdio(false); cin.tie(NULL); } ll binmul(ll a, ll b, ll c) { ll res = 0; while(b) { if(b&1) (res += a) %= c; (a += a) %= c; b >>= 1; } return res; } ll binpow(ll a, ll b, ll c) { ll res = 1; while(b) { if(b&1) (res *= a) %= c; (a *= a) %= c; b >>= 1; } return res; } template<typename T> T gcd(T a, T b) { if(b==0) return a; return gcd(b, a%b); } template<typename T> T lcm(T a, T b) { return a/gcd(a, b)*b; } mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); ld rnd() { return rng()%INT_MAX*1.0/INT_MAX; } const ll inf = 1e18+7, MX = LLONG_MAX, MN = LLONG_MIN; const ll mod = 1e9+7, N = 3e5+5; ll a[N], pr[N], dp[1005][205]; void kigash() { ll n, k, x = -1, mx = 0; cin>>n>>k; for(ll i=1; i<=n; i++) cin>>a[i], pr[i] = pr[i-1]+a[i]; for(ll i=1; i<=n; i++) { for(ll j=1; j<=min(i, k); j++) { for(ll l=j-1; l<i-(i==n); l++) { dp[i][j] = max(dp[i][j], dp[l][j-1]+(pr[i]-pr[l])*(pr[n]-pr[i])); } } if(i>=k && dp[i][k]>mx) mx = dp[i][k], x = i; } vector<ll> ans; cout<<mx<<"\n"; if(k) ans.pb(x); while(k--) { ll pos = -1; for(ll i=k; i<x-(); i++) { if(dp[x][k+1]==dp[i][k]+(pr[x]-pr[i])*(pr[n]-pr[x])) { pos = i; break; } } x = pos; if(k) ans.pb(x); } reverse(all(ans)); for(auto x: ans) { if(x==-1 && sz(ans)==1 && n==2) assert(0); cout<<x<<" "; } return; } signed main(/*Kigash Amir*/) { // freopen(""); IOIGold2024_InshAllah(); ll tt = 1; // cin>>tt; for(ll i=1; i<=tt; i++) { kigash(); } }

컴파일 시 표준 에러 (stderr) 메시지

sequence.cpp: In function 'void kigash()':
sequence.cpp:47:26: error: expected primary-expression before ')' token
   47 |         for(ll i=k; i<x-(); i++) {
      |                          ^
sequence.cpp: In function 'void freopen(std::string)':
sequence.cpp:17:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
      |                          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sequence.cpp:17:73: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
      |                                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~