Submission #42339

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
42339	2018-02-26 08:50:19	minhtung0404	역사적 조사 (JOI14_historical)	C++14	100 / 100	196 ms	5900 KiB

historic

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//https://oj.uz/problem/view/JOI14_historical
#include<bits/stdc++.h>
const int N = 1e5 + 5;
const int MAGIC = 300;
using namespace std;
vector <int> Query[N/MAGIC + 5];
int n, q, a[N], l[N], r[N], p[N], x[N], cnt[N];
long long ans[N];
bool cmp(int a, int b){return r[a] < r[b];}
signed main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n >> q;
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < n; i++) x[i] = i;
    sort(x, x+n, [](int xx, int yy){return a[xx] < a[yy];});
    for (int i = 0; i < n; i++){
        if (i == 0) p[x[i]] = 1;
        else p[x[i]] = p[x[i-1]] + (a[x[i]] != a[x[i-1]]);
    }
    for (int i = 1; i <= q; i++){
        cin >> l[i] >> r[i]; l[i]--; r[i]--;
        Query[l[i]/MAGIC].push_back(i);
    }
    for (int i = 0; i <= n/MAGIC; i++) sort(Query[i].begin(), Query[i].end(), cmp);
    for (int i = 0; i <= n/MAGIC; i++){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

historic.cpp: In function 'int main()':
historic.cpp:34:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < Query[i].size(); j++){
                           ^

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 60 / 60