Submission #393301

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
393301	2021-04-23T07:16:24 Z	Tc14	Aliens (IOI16_aliens)	C++17	Compilation error	0 ms	0 KB

aliens

//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include "aliens.h"
using namespace std;
#define ve vector
typedef long long ll;
typedef pair<int, int> pii;
const int INF = 1e9 + 10;
const ll LLINF = (ll)1e18 + 10;
 
ve<pii> P;
ve<ll> L;
int a;
 
struct segment {
    ll m, b, l, r, k;
};
 
double intersect(ll m1, ll m2, ll b1, ll b2) {
    return (double) (b1 - b2) / (double) (m2 - m1);
}
 
ll sq(int x) { return (ll)x*x; }
 
pair<ll, ll> calc(ll lambda) {
 
    ve<ll> DP(a), T(a);
    list<segment> H;
 
    DP[0] = sq(P[0].second - P[0].first + 1) - lambda;
    T[0] = 1;
 
    for (int i = 1; i < a; i++) {
 
        ll x = -P[i].first + 1;
        ll b = DP[i - 1] - L[i] + x * x;
        ll m = 2 * x;
 
        if (H.size() == 0) H.push_back({m, b, -LLINF, LLINF, T[i - 1]});
        else {
 
            while (intersect(H.back().m, m, H.back().b, b) < (double)H.back().l) {
                H.pop_back();
            }
 
            double z = intersect(H.back().m, m, H.back().b, b);
 
            if ((H.back().b - b) % (m - H.back().m) == 0) {
                if ((H.back().b - b) / (m - H.back().m) == (double)H.back().l) {
                    assert(false);
                }
            }
 
            ll l = (ll)ceil(z);
            H.back().r = (ll)floor(z);
 
            H.push_back({m, b, l, LLINF, T[i - 1]});
        }
 
        while (H.begin()->r < P[i].second) {
            H.pop_front();
        }
        H.begin()->l = -LLINF;
 
        ll q = H.begin()->m * P[i].second + H.begin()->b;
        ll v = q + sq(P[i].second) - lambda;
 
        DP[i] = sq(P[i].second - P[0].first + 1) - lambda;
        T[i] = 1;
 
        if (DP[i] > v) {
            DP[i] = v;
            T[i] = H.begin()->k + 1;
        }
    }
 
    return {DP[a - 1], T[a - 1]};
}
 
ll take_photos(int n, int m, int k, ve<int> R, ve<int> C) {
 
    map<int, int> M;
 
    for (int i = 0; i < n; i++) {
        int r = R[i];
        int c = C[i];
        if (c < r) swap(r, c);
        if (M.find(r) == M.end()) M[r] = c;
        else M[r] = max(M[r], c);
    }
 
    int cOld = -1;
    a = 0;
    for (pii p : M) {
        int r, c;
        tie(r, c) = p;
        if (c > cOld) {
            cOld = c;
            P.push_back({r, c});
            a++;
        }
    }
 
    L = ve<ll>(a);
    for (int i = 1; i < a; i++) {
        if (P[i - 1].second >= P[i].first) {
            L[i] = sq(P[i - 1].second - P[i].first + 1);
        }
    }
 
    ll lo = 0;
    ll hi = (ll)1e9;
    
    ll v, t;

    while (lo < hi) {
 
        ll m = (lo + hi) / 2;
 
        tie(v, t) = calc(m);
 
        if (t > min(a, k)) lo = m + 1;
        else if (t <= min(a, k)) hi = m;
        else
          throw exception("WTF");
    }
    
    return v + t * m;
}

Compilation message

aliens.cpp: In function 'll take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:125:32: error: no matching function for call to 'std::exception::exception(const char [4])'
  125 |           throw exception("WTF");
      |                                ^
In file included from /usr/include/c++/9/exception:38,
                 from /usr/include/c++/9/ios:39,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from aliens.cpp:2:
/usr/include/c++/9/bits/exception.h:68:5: note: candidate: 'constexpr std::exception::exception(std::exception&&)'
   68 |     exception(exception&&) = default;
      |     ^~~~~~~~~
/usr/include/c++/9/bits/exception.h:68:15: note:   no known conversion for argument 1 from 'const char [4]' to 'std::exception&&'
   68 |     exception(exception&&) = default;
      |               ^~~~~~~~~~~
/usr/include/c++/9/bits/exception.h:66:5: note: candidate: 'constexpr std::exception::exception(const std::exception&)'
   66 |     exception(const exception&) = default;
      |     ^~~~~~~~~
/usr/include/c++/9/bits/exception.h:66:15: note:   no known conversion for argument 1 from 'const char [4]' to 'const std::exception&'
   66 |     exception(const exception&) = default;
      |               ^~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/exception.h:63:5: note: candidate: 'std::exception::exception()'
   63 |     exception() _GLIBCXX_NOTHROW { }
      |     ^~~~~~~~~
/usr/include/c++/9/bits/exception.h:63:5: note:   candidate expects 0 arguments, 1 provided