제출 #71958

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
71958		마릴린 희정 (#118)	흔한 자료구조 문제 (FXCUP3_easy)	C++17	0 / 100	4 ms	2424 KiB

easy

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include <limits.h>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <algorithm>
#include <string>
#include <functional>
#include <vector>
#include <numeric>
#include <deque>
#include <bitset>
#include <iostream>
using namespace std;
typedef long long lint;
typedef long double llf;
typedef pair<int, int> pi;

struct rmq{
	int tree[530000], lim;
	void init(int n){
		memset(tree, 0x3f, sizeof(tree));
		for(lim = 1; lim <= n; lim <<= 1);
	}
	void add(int x, int v){
		x += lim;
		tree[x] = min(tree[x], v);
		while(x > 1){
			x >>= 1;
			tree[x] = min(tree[2*x], tree[2*x+1]);
		}
	}
	int query(int s, int e){
		s += lim;
		e += lim;
		int ret = 1e9;
		while(s < e){
			if(s%2 == 1) ret = min(ret, tree[s++]);
			if(e%2 == 0) ret = min(ret, tree[e--]);
			s >>= 1;
			e >>= 1;
		}
		if(s == e) ret = min(ret, tree[s]);
		return ret;
	}
}rmq;

int n, q, a[200005];
int main(){
	scanf("%d %d",&n,&q);
	rmq.init(n);
	for(int i=1; i<=n; i++){
		scanf("%d",&a[i]);
		rmq.add(i, a[i]);
	}
	while(q--){ int l, r; scanf("%d %d",&l,&r);
		printf("%d\n", rmq.query(l, r));
	}
}

컴파일 시 표준 에러 (stderr) 메시지

easy.cpp: In function 'int main()':
easy.cpp:55:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&q);
  ~~~~~^~~~~~~~~~~~~~~
easy.cpp:58:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ~~~~~^~~~~~~~~~~~
easy.cpp:61:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  while(q--){ int l, r; scanf("%d %d",&l,&r);
                        ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 0 / 33
• Subtask 2: 0 / 67