제출 #1318548

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1318548		Robert_junior	벽 (IOI14_wall)	C++20	컴파일 에러	0 ms	0 KiB

wall

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back  
#define all(x) x.begin(), x.end()
#define ins insert
#define F first
#define S second
#define ld double
const int N = 2e6 + 100, mod = 998443532, inf = 1e18;
struct str{
    int mn = 0, mx = INT_MAX;
};
str t[N * 4];
void F(int v, str &x){
    t[v].mn = max(t[v].mn, x.mn);
    t[v].mx = max(t[v].mx, t[v].mn);
    t[v].mx = min(t[v].mx, x.mx);
    t[v].mn = min(t[v].mn, t[v].mx);
}
void push(int v, int l, int r){
    if(l != r){
        F(v + v, t[v]);
        F(v + v + 1, t[v]);
    }
    t[v] = str();
}
void upd(int v, int l, int r, int ll, int rr, str &x){
    if(l <= ll && rr <= r){
        F(v, x);
        return;
    }
    if(l > rr || ll > r) return;
    push(v, ll, rr);
    int m = (ll + rr) / 2;
    upd(v + v, l, r, ll, m, x);
    upd(v + v + 1, l, r, m + 1, rr, x);
}
str get(int v, int l, int r, int idx){
    if(l == r){
        return t[v];
    }
    else{
        push(v, l, r);
        int m = (l + r) / 2;
        if(idx <= m) return get(v + v, l, m, idx);
        else return get(v + v + 1, m + 1, r, idx); 
        
    }
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int final_height[]) {
	for(int i = 0; i < k; i++){
	    if(op[i] == 1){
	        upd(1, 0, n - 1, left[i], right[i], {height[i], INT_MAX});
	    }
	    else{
	        upd(1, 0, n - 1, left[i], right[i], {0, height[i]});
	    }
	}
	for(int i = 0; i < n; i++){
	    final_height[i] = (get(1, 0, n - 1, i)).mn;
	}
}

컴파일 시 표준 에러 (stderr) 메시지

wall.cpp: In function 'void buildWall(long long int, long long int, long long int*, long long int*, long long int*, long long int*, long long int*)':
wall.cpp:54:20: error: cannot bind non-const lvalue reference of type 'str&' to an rvalue of type 'str'
   54 |                 upd(1, 0, n - 1, left[i], right[i], {height[i], INT_MAX});
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
wall.cpp:28:52: note:   initializing argument 6 of 'void upd(long long int, long long int, long long int, long long int, long long int, str&)'
   28 | void upd(int v, int l, int r, int ll, int rr, str &x){
      |                                               ~~~~~^
wall.cpp:57:20: error: cannot bind non-const lvalue reference of type 'str&' to an rvalue of type 'str'
   57 |                 upd(1, 0, n - 1, left[i], right[i], {0, height[i]});
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
wall.cpp:28:52: note:   initializing argument 6 of 'void upd(long long int, long long int, long long int, long long int, long long int, str&)'
   28 | void upd(int v, int l, int r, int ll, int rr, str &x){
      |                                               ~~~~~^