Submission #287033

#	Time	Username	Problem	Language	Result	Execution time	Memory
287033		dolphingarlic	Happiness (Balkan15_HAPPINESS)	C++14	Compilation error	0 ms	0 KiB

happiness

#include "happiness.h"

#include <utility>

struct Node {
    long long l, r, sm, mn;
    Node *lc, *rc;

    Node(long long L, long long R): l(L), r(R), sm(0), mn(-R), lc(nullptr), rc(nullptr) {}

    void update(long long p, long long v) {
        sm += v;
        if (l != r) {
            long long mid = (l + r) / 2;
            if (p > mid) {
                if (!rc) rc = new Node(mid + 1, r);
                rc->update(p, v);
            } else {
                if (!lc) lc = new Node(l, mid);
                lc->update(p, v);    
            }
            long long lmn = (lc ? lc->mn : -mid), rmn = (rc ? rc->mn : -r);
            long long lsm = (lc ? lc->sm : 0);
            mn = (lmn < lsm + rmn ? lmn : lsm + rmn);
        }
    }

    std::pair<long long, long long> query(long long p) {
        if (r <= p) return {sm, mn};
        long long mid = (l + r) / 2;
        if (p > mid) {
            std::pair<int, int> lq = (lc ? lc->query(p) : {0, 0}), rq = (rc ? rc->query(p) : {0, 0});
            return {lq.first + rq.first, (lq.second < lq.first + rq.second ? lq.second : lq.first + rq.second)};
        }
        return (lc ? lc->query(p) : {0, 0});
    }
} *root;

bool init(int coinsCount, long long maxCoinSize, long long coins[]) {
    root = new Node(1, maxCoinSize);
    for (int i = 0; i < coinsCount; i++) root->update(coins[i], coins[i]);
	return root->query(root->sm).first < -1;
}

bool is_happy(int event, int coinsCount, long long coins[]) {
	for (int i = 0; i < coinsCount; i++) root->update(coins[i], event * coins[i]);
    return root->query(root->sm).first < -1;
}

Compilation message (stderr)

happiness.cpp: In member function 'std::pair<long long int, long long int> Node::query(long long int)':
happiness.cpp:32:59: error: expected primary-expression before '{' token
   32 |             std::pair<int, int> lq = (lc ? lc->query(p) : {0, 0}), rq = (rc ? rc->query(p) : {0, 0});
      |                                                           ^
happiness.cpp:32:58: error: expected ')' before '{' token
   32 |             std::pair<int, int> lq = (lc ? lc->query(p) : {0, 0}), rq = (rc ? rc->query(p) : {0, 0});
      |                                      ~                   ^~
      |                                                          )
happiness.cpp:32:100: error: expected ',' or ';' before ')' token
   32 |             std::pair<int, int> lq = (lc ? lc->query(p) : {0, 0}), rq = (rc ? rc->query(p) : {0, 0});
      |                                                                                                    ^
happiness.cpp:33:32: error: 'rq' was not declared in this scope; did you mean 'r'?
   33 |             return {lq.first + rq.first, (lq.second < lq.first + rq.second ? lq.second : lq.first + rq.second)};
      |                                ^~
      |                                r
happiness.cpp:33:111: error: could not convert '{<expression error>, <expression error>}' from '<brace-enclosed initializer list>' to 'std::pair<long long int, long long int>'
   33 |             return {lq.first + rq.first, (lq.second < lq.first + rq.second ? lq.second : lq.first + rq.second)};
      |                                                                                                               ^
      |                                                                                                               |
      |                                                                                                               <brace-enclosed initializer list>
happiness.cpp:35:37: error: expected primary-expression before '{' token
   35 |         return (lc ? lc->query(p) : {0, 0});
      |                                     ^
happiness.cpp:35:36: error: expected ')' before '{' token
   35 |         return (lc ? lc->query(p) : {0, 0});
      |                ~                   ^~
      |                                    )
happiness.cpp:35:43: error: expected ';' before ')' token
   35 |         return (lc ? lc->query(p) : {0, 0});
      |                                           ^
      |                                           ;
happiness.cpp:35:43: error: expected primary-expression before ')' token
grader.cpp: In function 'int main()':
grader.cpp:16:12: warning: unused variable 'max_code' [-Wunused-variable]
   16 |  long long max_code;
      |            ^~~~~~~~