#include <bits/stdc++.h>
// #pragma GCC optimize("O3", "Ofast")
// #define int long long
#define ll long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<char,char> pcc;
typedef pair<pii,int> ipii;
typedef pair<pii,pii> ipiii;
const int MAXN = 3e5+10;
const int SQRT = 600;
int n, q, a[MAXN], cnt[MAXN];
vector <ipii> que;
int l=1,r=0, dif[MAXN];
int nxl[MAXN], nxr[MAXN];
ll ans[MAXN];
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin>>n>>q;
for(int i=1; i<=n; i++)
cin>>a[i];
for(int p=1; p<=q; p++){
int l,r;cin>>l>>r;
que.pb({{l,r}, p});
}
sort(que.begin(), que.end(), [&](auto a, auto b){
if(a.fi.fi/SQRT != b.fi.fi/SQRT) a.fi.fi/SQRT < b.fi.fi/SQRT;
if((a.fi.fi/SQRT) & 1) a.fi.se > b.fi.se;
return a.fi.se < b.fi.se;
});
nxl[0] = 0, nxr[0] = n+1, nxl[n+1] = 0, nxr[n+1] = n+1;
dif[0] = MAXN;
for(auto [xx, idx] : que){
int le = xx.fi, ri = xx.se;
while(le < l){
l--;
dif[cnt[a[l]]]--;
cnt[a[l]]++;
dif[cnt[a[l]]]++;
// lef(cnt[a[l]]-1, cnt[a[l]], zer, one);
int le = cnt[a[l]]-1, ri = cnt[a[l]];
int p = nxl[le], q = nxr[le];
if(dif[cnt[a[l]]-1]==0){
if(dif[cnt[a[l]]]==1){
nxl[ri] = p; nxr[ri] = q;
nxr[p] = ri; nxl[q] = ri;
} else {
nxr[p] = q; nxl[q] = p;
}
nxl[le] = 0, nxr[le] = n + 1;
} else {
if(dif[cnt[a[l]]]==1){ // gk pop, push
// cout << p<<' '<<q<<"masuk\n";
nxl[ri] = le; nxr[ri] = q;
nxr[le] = ri;
nxl[q] = ri; // ganti
}
}
}
while(r < ri){
r++;
dif[cnt[a[r]]]--;
cnt[a[r]]++;
dif[cnt[a[r]]]++;
// lef(cnt[a[r]]-1, cnt[a[r]], zer, one);
int le = cnt[a[r]]-1, ri = cnt[a[r]];
int p = nxl[le], q = nxr[le];
if(dif[cnt[a[r]]-1]==0){
if(dif[cnt[a[r]]]==1){
nxl[ri] = p; nxr[ri] = q;
nxr[p] = ri; nxl[q] = ri;
} else {
nxr[p] = q; nxl[q] = p;
}
nxl[le] = 0, nxr[le] = n + 1;
} else {
if(dif[cnt[a[r]]]==1){ // gk pop, push
// cout << p<<' '<<q<<"masuk\n";
nxl[ri] = le; nxr[ri] = q;
nxr[le] = ri;
nxl[q] = ri; // ganti
}
}
}
while(l < le){
dif[cnt[a[l]]]--;
cnt[a[l]]--;
dif[cnt[a[l]]]++;
// rig(cnt[a[l]]+1, cnt[a[l]], zer, one);
int le = cnt[a[l]]+1, ri = cnt[a[l]];
int p = nxl[le], q = nxr[le];
if(dif[cnt[a[l]]+1]==0){
if(dif[cnt[a[l]]]==1){
nxl[ri] = p; nxr[ri] = q;
nxr[p] = ri; nxl[q] = ri;
} else {
nxr[p] = q; nxl[q] = p;
}
nxl[le] = 0, nxr[le] = n + 1;
} else {
if(dif[cnt[a[l]]]==1){ // gk pop, push
nxr[ri] = le; nxl[ri] = p;
nxl[le] = ri;
nxr[p] = ri; // ganti
}
}
l++;
}
while(ri < r){
dif[cnt[a[r]]]--;
cnt[a[r]]--;
dif[cnt[a[r]]]++;
// rig(cnt[a[r]]+1, cnt[a[r]], zer, one);
int le = cnt[a[r]]+1, ri = cnt[a[r]];
int p = nxl[le], q = nxr[le];
if(dif[cnt[a[r]]+1]==0){
if(dif[cnt[a[r]]]==1){
nxl[ri] = p; nxr[ri] = q;
nxr[p] = ri; nxl[q] = ri;
} else {
nxr[p] = q; nxl[q] = p;
}
nxl[le] = 0, nxr[le] = n + 1;
} else {
if(dif[cnt[a[r]]]==1){ // gk pop, push
nxr[ri] = le; nxl[ri] = p;
nxl[le] = ri;
nxr[p] = ri; // ganti
}
}
r--;
}
// cout << "donemove\n";
vector <int> vec;
int in = nxr[0];
while(in!=n+1){
// cout << in << ' ' << dif[in] << " dif\n";
vec.pb(in); // value, len
in = nxr[in];
}
reverse(vec.begin(), vec.end());
ll res = 0, f = 0, num = 0, cur = 0, pref = 0, suf = 0;
for (auto x : vec) {
ll c = dif[x];
ll le = (c + (f ^ 1)) / 2, ri = (c + f) / 2;
auto calc = [&](ll y) {
ll res = (x * y) * (x * y + 1) / 2 + x * x * ((y - 1) * y * (2 * (y - 1) + 1) / 6 + (y - 1) * y / 2) / 2;
return res;
};
// le to le and ri to ri
res += calc(le);
res += calc(ri);
// cout << "a: " << res << '\n';
// le to ri
res += cur * le * x * ri * x + (le * (le + 1) / 2 * x) * (ri * x) + (le * x) * (ri * (ri + 1) / 2 * x);
// cout << "b: " << res << '\n';
// le to md
res += (le * x) * pref;
res += (le * (le + 1) / 2 * x) * num;
// cout << "c: " << res << '\n';
// md to ri
res += suf * (ri * x);
res += num * (ri * (ri + 1) / 2 * x);
// cout << "d: " << res << '\n';
pref = (le * (le + 1) / 2 * x) + (pref + num * le) + (ri * (ri + 1) / 2 * x + (ri * x) * (le + cur));
suf = (ri * (ri + 1) / 2 * x) + (suf + num * ri) + (le * (le + 1) / 2 * x + (le * x) * (ri + cur));
num += c * x;
cur += c;
f ^= (c % 2);
// cout << pref << " " << suf << '\n';
}
ans[idx] = res;
}
for(int i=1; i<=q; i++) cout << ans[i] << '\n';
}
