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35 lines
760 B
35 lines
760 B
#include <bits/stdc++.h>
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using namespace std;
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const int N = 110;
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int a[N];
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int st[10];
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struct Node {
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int st, ed;
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};
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vector<Node> q;
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/*
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5
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1 2 3 3 2
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*/
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int main() {
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int n;
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cin >> n;
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for (int i = 1; i <= n; i++) cin >> a[i]; // 密码数组
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for (int i = 1; i <= n; i++) {
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if (!st[a[i]]) {
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st[a[i]] = 1;
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for (int j = n; j; j--)
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if (a[i] == a[j]) {
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q.push_back({i, j});
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break;
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}
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}
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}
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// 从左到右枚举，所以，不再需再进行按左端点排序,现在就是按左端点排序完的
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for (int i = 0; i < q.size(); i++) cout << q[i].st << " " << q[i].ed << endl;
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return 0;
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} |