제출 #753642

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
753642		LucaIlie	Happiness (Balkan15_HAPPINESS)	C++17	0 / 100	0 ms	212 KiB

happiness

#include "happiness.h"
#include <bits/stdc++.h>

using namespace std;

int m;
unordered_map<long long, int> frecv;

struct SegTree {
    struct node {
        node *left, *right;
        long long minn, lazy;
    };

    node *createNode() {
        node *x = new node;
        x->left = x->right = NULL;
        x->minn = x->lazy = 0;
        return x;
    }

    node *root;

    void propag( node *v, long long l, long long r ) {
        v->minn += v->lazy;
        if ( l != r ) {
            v->left->lazy += v->lazy;
            v->right->lazy += v->lazy;
        }
        v->lazy = 0;
    }

    void init() {
        root = createNode();
    }

    void update( node *v, long long l, long long r, long long lu, long long ru, long long x ) {
        if ( l != r ) {
            if ( v->left == NULL )
                v->left = createNode();
            if ( v->right == NULL )
                v->right = createNode();
        }

        propag( v, l, r );

        if ( lu > r || ru < l )
            return;

        if ( lu <= l && r <= ru ) {
            v->lazy += x;
            propag( v, l, r );
            return;
        }

        long long mid = (l + r) / 2;
        update( v->left, l, mid, lu, ru, x );
        update( v->right, mid + 1, r, lu, ru, x );
        v->minn = min( v->left->minn, v->right->minn );
    }
    void update( long long l, long long r, long long x ) {
        update( root, 1, m, l, r, x );
    }

    long long queryALL() {
        return root->minn;
    }
};

SegTree aint;

void update( int e, long long x ) {
    frecv[x]++;
    aint.update( x, m, 2 * x * e );
    aint.update( min( 1LL, x - 1 ), m, -x * e );
}

bool init( int n, long long _m, long long c[] ) {
    m = _m;
    aint.init();
    for ( int i = 0; i < n; i++ )
        update( 1, c[i] );
    return (frecv[1] >= 1 && aint.queryALL() >= -1);
}

bool is_happy( int event, int n, long long c[] ) {
    for ( int i = 0; i < n; i++ )
        update( event, c[i] );
    return (frecv[1] >= 1 && aint.queryALL() >= -1);
}

컴파일 시 표준 에러 (stderr) 메시지

grader.cpp: In function 'int main()':
grader.cpp:16:12: warning: unused variable 'max_code' [-Wunused-variable]
   16 |  long long max_code;
      |            ^~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40