제출 #1122836

#제출 시각아이디문제언어결과실행 시간메모리
1122836gdragon운세 보기 2 (JOI14_fortune_telling2)C++20
35 / 100
182 ms4544 KiB
#include <bits/stdc++.h> using namespace std; #define TASK "long" #define fi first #define se second #define ll long long #define pb push_back #define ALL(x) (x).begin(), (x).end() #define GETBIT(mask, i) ((mask) >> (i) & 1) #define MASK(i) ((1LL) << (i)) #define SZ(x) ((int)(x).size()) #define mp make_pair #define CNTBIT(mask) __builtin_popcount(mask) template<class X, class Y> bool maximize(X &x, Y y){ if (x < y) {x = y; return true;} return false;}; template<class X, class Y> bool minimize(X &x, Y y){ if (x > y) {x = y; return true;} return false;}; typedef pair<int, int> ii; const int N = 1e5 + 5; const int inf = 1e9 + 7; const long long INF = (long long)1e18 + 7; const int mod = 1e9 + 7; void add(int &x, int y) {x += y; if (x >= mod) x -= mod;} void sub(int &x, int y) {x -= y; if (x < 0) x += mod;} int mul(int x, int y) {return 1LL * x * y % mod;} mt19937 rd(chrono::steady_clock::now().time_since_epoch().count()); long long rnd(long long l, long long r) { return uniform_int_distribution<long long>(l, r)(rd); } // -----------------------------------------// struct FenwickMax { int n; vector<int> v; FenwickMax(int _n = 0) { n = _n; v.assign(n + 2, 0); } void update(int x, int c) { for(; x > 0; x -= x & -x) v[x] = max(v[x], c); } int get(int x) { int ans = 0; for(; x <= n; x += x & -x) ans = max(ans, v[x]); return ans; } } fw1; struct Fenwick { int n; vector<int> v; Fenwick(int _n = 0) { n = _n; v.assign(n + 2, 0); } void update(int x, int c) { for(; x <= n; x += x & -x) v[x] += c; } int get(int x) { int ans = 0; for(; x > 0; x -= x & -x) ans += v[x]; return ans; } int get(int l, int r) { return get(r) - get(l - 1); } } fw; int n, q; int pos[N]; vector<int> val; pair<int, int> a[N], queries[N]; void read() { cin >> n >> q; for(int i = 1; i <= n; i++) cin >> a[i].fi >> a[i].se; for(int i = 1; i <= q; i++) { cin >> queries[i].fi; queries[i].se = i; } } void sub1() { // sort(queries + 1, queries + q + 1); vector<int> on(n + 1, 0); for(int iter = 1; iter <= q; iter++) { int lim = queries[iter].fi; for(int i = 1; i <= n; i++) { int x = (on[i] ? a[i].se : a[i].fi); if (x <= lim) on[i] ^= 1; } } long long ans = 0; for(int i = 1; i <= n; i++) ans += (on[i] ? a[i].se : a[i].fi); cout << ans; } int getPos(int x) { return lower_bound(ALL(val), x) - val.begin() + 1; } void solve() { // if (max(n, q) <= 1000) { // sub1(); // return; // } for(int i = 1; i <= n; i++) val.push_back(min(a[i].fi, a[i].se)); for(int i = 1; i <= q; i++) val.push_back(queries[i].fi); sort(ALL(val)); for(int i = 1; i <= n; i++) pos[i] = i; sort(pos + 1, pos + n + 1, [&](int x, int y) { return max(a[x].fi, a[x].se) < max(a[y].fi, a[y].se); }); sort(queries + 1, queries + q + 1); fw = Fenwick(q); fw1 = FenwickMax(SZ(val)); for(int i = 1; i <= q; i++) fw.update(i, 1); long long ans = 0; for(int i = 1, j = 1; i <= n; i++) { int p = pos[i]; int mx = max(a[p].fi, a[p].se); cerr << "i: " << p << endl; while(j <= q && queries[j].fi < mx) { // cerr << queries[j].fi << ' ' << queries[j].se << endl; fw.update(queries[j].se, -1); fw1.update(getPos(queries[j].fi), queries[j].se); ++j; } int tmp = fw1.get(getPos(min(a[p].fi, a[p].se))); if (tmp == 0) { int x = fw.get(q); if (x & 1) ans += a[p].se; else ans += a[p].fi; } else { int x = fw.get(tmp, q); if (x & 1) ans += min(a[p].fi, a[p].se); else ans += max(a[p].fi, a[p].se); } // cerr << "ANS: " << ans << endl; } cout << ans; } signed main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); if (fopen(TASK".inp", "r")) { freopen(TASK".inp", "r", stdin); freopen(TASK".out", "w", stdout); } int test = 1; // cin >> test; while(test--) { read(); solve(); } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

fortune_telling2.cpp: In function 'int main()':
fortune_telling2.cpp:139:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  139 |         freopen(TASK".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
fortune_telling2.cpp:140:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |         freopen(TASK".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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