「杂题乱刷」CF1927D

合集 - 杂题乱刷(99)

1.「杂题乱刷」CF624B2023-11-232.「杂题乱刷」CF1221B2023-11-233.「杂题乱刷」CF1585B2023-11-234.「杂题乱刷」CF468A2023-11-235.「杂题乱刷」洛谷P95152023-11-236.「杂题乱刷」CF283A2023-11-237.「杂题乱刷」CF1534C2023-11-288.「杂题乱刷」洛谷P92532023-11-239.「杂题乱刷」洛谷P10642023-12-0710.「杂题乱刷」洛谷P22852023-12-0811.「杂题乱刷」洛谷P15442023-12-0812.「杂题乱刷」洛谷P12162023-12-0813.「杂题乱刷」CF1904B2023-12-1014.「杂题乱刷」CF1272D2023-12-1215.「杂题乱刷」CF1620E2023-12-1416.「杂题乱刷」CF1105C2023-12-1617.「杂题乱刷」CF961B2023-12-1618.「杂题乱刷」CF978G2023-12-1619.「杂题乱刷」洛谷P24262023-12-1720.「杂题乱刷」洛谷P95332023-12-1821.「杂题乱刷」CF1914E1 & CF1914E22023-12-2022.「杂题乱刷」AT_abc280_e2023-12-2223.「杂题乱刷」AT_abc280_d2023-12-2224.「杂题乱刷」AT_abc020_c2023-12-2925.「杂题乱刷」CF1916C2023-12-3126.「杂题乱刷」AT_arc041_b2024-01-0327.【待补题解】AT_arc146_a2024-01-0328.「杂题乱刷」AT_abc007_32024-01-0629.「杂题乱刷」AT_abc008_32024-01-0630.「杂题乱刷」AT_abc337_e2024-01-2131.「杂题乱刷」洛谷 P15582024-01-2332.「杂题乱刷」AT_abc308_f2024-01-2633.「杂题乱刷」AT_abc307_e2024-01-2634.「杂题乱刷」ZhengRui 54. 【17 普及 13】幻想嘉年华2024-01-2735.「杂题乱刷」CF1925C & CF1924A2024-01-3136.「杂题乱刷」AT_abc208_e2024-02-02

37.「杂题乱刷」CF1927D2024-02-07

38.「杂题乱刷」CF1886D2024-02-0739.「杂题乱刷」P86872024-02-1040.「杂题乱刷」洛谷 P101552024-02-1341.「杂题乱刷」洛谷 P18312024-02-1442.「杂题乱刷」洛谷 P39522024-02-1543.「杂题乱刷」洛谷 P17122024-02-1744.「杂题乱刷」CF954C2024-02-2345.「杂题乱刷」洛谷 P88662024-02-2546.「杂题乱刷」CF1937C & CF1936A2024-03-0147.「杂题乱刷」CF1934D22024-03-0348.「杂题乱刷」洛谷 P48012024-03-0349.「杂题乱刷」CF1846E1 & CF1846E22024-03-0550.「杂题乱刷」ZhengRui 611 【19寒假普转提】树的权2024-03-0651.「杂题乱刷」ZhengRui 281 汪初雪与高流星2024-03-1252.「杂题乱刷」洛谷 P17082024-03-1253.「杂题乱刷」洛谷 P25722024-03-1354.ZRcsp内训day7题解2024-03-2655.「杂题乱刷」at_abc092_d & AT_arc093_b2024-04-0156.「杂题乱刷」CF74E2024-04-0157.「杂题乱刷」CF786C2024-04-1258.「杂题乱刷」洛谷 P23982024-04-1859.「杂题乱刷」AT_abc230_e2024-04-1960.「杂题乱刷」AT_abc314_e2024-04-1961.「杂题乱刷」AT_abc253_c2024-04-2262.「杂题乱刷」AT_abc279_e2024-04-2363.「杂题乱刷」AT_abc220_f2024-04-2664.「杂题乱刷」AT_abc096_d2024-05-0565.「杂题乱刷」Zheng Rui 327 【2018普转提day17专题】洗2024-05-1466.「杂题乱刷」洛谷 P10468 兔子与兔子2024-05-1767.「杂题乱刷」洛谷 P104672024-05-1768.「杂题乱刷」AT_abc211_e2024-05-1769.「杂题乱刷」AT_abc354_f2024-05-1970.「杂题乱刷」CF1973D2024-05-2071.「杂题乱刷」CF1759F2024-05-2372.「杂题乱刷」CF1650D2024-05-2373.「杂题乱刷」CF1650E2024-05-2374.「杂题乱刷」P85722024-05-2875.「杂题乱刷」CF1977B2024-05-2876.「杂题乱刷」CF1977C2024-05-2877.「杂题乱刷」 AT_abc285_e2024-05-3078.「杂题乱刷」CF460C2024-05-3079.「杂题乱刷」P82792024-05-3180.「杂题乱刷」P88162024-06-0181.「杂题乱刷」AT_abc179_e2024-06-0582.「杂题乱刷」AT_abc126_e2024-06-0683.「杂题乱刷」CF1979C2024-06-0784.「杂题乱刷」AT_abc160_e2024-06-0785.「杂题乱刷」AT_abc357_f2024-06-0886.「杂题乱刷」P105122024-06-1087.「杂题乱刷」AT_abc132_e2024-06-1188.「杂题乱刷」AT_abc154_e2024-06-1189.「杂题乱刷」CF1985F2024-06-1390.「杂题乱刷」AT_abc161_d2024-06-1491.「杂题乱刷」P13962024-06-1692.「杂题乱刷」AT_abc358_g2024-06-1693.「杂题乱刷」AT_abc359_d2024-06-2394.「杂题乱刷」 AT_abc123_d2024-06-2395.「杂题乱刷」P7840 & AT_abc359_f2024-06-2396.「杂题乱刷」CF1987C2024-07-0197.「杂题乱刷」CF1987D2024-07-0198.「杂题乱刷」AT_abc360_d2024-07-0299.「杂题乱刷」P106782024-07-02

收起

盲猜没人用此做法

题目链接

CF1927D Find the Different Ones!

解题思路

考虑分块，在一块内的数当且仅当他们是连续的且权值相同，并记录下他们的左右端点同时记录每一个数在哪个块内，对于每个块维护它的左右端点，然后对于每组询问如果 $l,r$ 在同一个块内，那么 $l\sim r$ 的所有权值一定相同，输出 -1 -1，否则 $l\sim r$ 中一定有权值不同的数，这时输出 $l$ 和下一个块的左端点表示的数即可。

参考代码

#include<bits/stdc++.h>
using namespace std;
#define map unordered_map
#define forl(i,a,b) for(register long long i=a;i<=b;i++)
#define forr(i,a,b) for(register long long i=a;i>=b;i--)
#define lc(x) x<<1
#define rc(x) x<<1|1
#define cin(x) scanf("%lld",&x)
#define cout(x) printf("%lld",x)
#define lowbit(x) x&-x
#define pb push_back
#define pf push_front
#define IOS ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define endl '\n'
#define QwQ return 0;
#define ll long long
ll t;
void solve()
{
	ll n,m;
	cin>>n;
	ll k=0,a[n+10]={0},b[n+10]={0},l[n+10]={0},r[n+10]={0},num[n+10]={0};
	forl(i,1,n)
	{
		cin>>a[i];
		if(a[i]!=a[i-1])
			r[k]=i,l[++k]=i,num[k]=a[i];
		b[i]=k;
	}
	cin>>m;
	r[k]=n;
	while(m--)
	{
		ll L,R;
		cin>>L>>R;
		if(b[L]==b[R])
			cout<<"-1 -1\n";
		else
		{
			cout<<L<<' '<<l[b[L]+1]<<endl;
		}
	}
	cout<<endl;
}
int main()
{
	IOS;
	t=1;
	cin>>t;
	while(t--)
		solve();
	QwQ;
}