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| ##include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pdd;
##define INF 0x3f3f3f3f
##define lowbit(x) x & (-x)
##define mem(a, b) memset(a , b , sizeof(a))
##define FOR(i, x, n) for(int i = x;i <= n; i++)
const ll mod = 1e9 + 7;
const int N = 1e5 + 10;
##define lc u << 1
##define rc u << 1 1
##define mid (t[u].l + t[u].r) / 2
struct Node {
int l, r;
ll sum, len;
ll lazl, lazr, lazlen;
}t[N << 2];
inline void push_up(int u) {
t[u].sum = (t[lc].sum + t[rc].sum) % mod;
t[u].len = (t[lc].len + t[rc].len) % mod;
}
inline void push_down(int u) {
if(t[u].lazlen == 1) return ;
t[lc].sum = (t[lc].sum * t[u].lazlen % mod + (mid - t[u].l + 1) * t[u].lazr % mod + t[u].lazl * t[lc].len % mod * t[u].lazlen % mod) % mod;
t[rc].sum = (t[rc].sum * t[u].lazlen % mod + (t[u].r - mid) * t[u].lazr % mod + t[u].lazl * t[rc].len % mod * t[u].lazlen % mod) % mod;
t[lc].len = t[lc].len * t[u].lazlen % mod * t[u].lazlen % mod;
t[rc].len = t[rc].len * t[u].lazlen % mod * t[u].lazlen % mod;
t[lc].lazl = (t[lc].lazl + t[u].lazl * t[lc].lazlen) % mod;
t[rc].lazl = (t[rc].lazl + t[u].lazl * t[rc].lazlen) % mod;
t[lc].lazr = (t[lc].lazr * t[u].lazlen + t[u].lazr) % mod;
t[rc].lazr = (t[rc].lazr * t[u].lazlen + t[u].lazr) % mod;
t[lc].lazlen = t[lc].lazlen * t[u].lazlen % mod;
t[rc].lazlen = t[rc].lazlen * t[u].lazlen % mod;
t[u].lazl = t[u].lazr = 0;
t[u].lazlen = 1;
}
void build(int u, int l, int r) {
t[u].l = l; t[u].r = r;
t[u].sum = t[u].lazl = t[u].lazr = 0;
t[u].lazlen = 1;
if(l == r) {
t[u].len = 1;
return ;
}
int m = (l + r) >> 1;
build(lc, l, m);
build(rc, m + 1, r);
push_up(u);
}
void modify(int u, int ql, int qr, int v) {
if(ql <= t[u].l && t[u].r <= qr) {
t[u].sum = (t[u].sum * 10 + (t[u].r - t[u].l + 1) * v + t[u].len * 10 * v) % mod;
t[u].len = t[u].len * 100 % mod;
t[u].lazl = (t[u].lazl + t[u].lazlen * v) % mod;
t[u].lazr = (t[u].lazr * 10 + v) % mod;
t[u].lazlen = t[u].lazlen * 10 % mod;
return ;
}
push_down(u);
if(ql <= mid) modify(lc, ql, qr, v);
if(qr > mid) modify(rc, ql, qr, v);
push_up(u);
}
ll query(int u, int ql, int qr) {
if(ql <= t[u].l && t[u].r <= qr) {
return t[u].sum;
}
push_down(u);
ll ans = 0;
if(ql <= mid) ans = (ans + query(lc, ql, qr)) % mod;
if(qr > mid) ans = (ans + query(rc, ql, qr)) % mod;
return ans;
}
void solve()
{
int _, Case = 1;
cin >> _;
while(_--) {
cout << "Case " << Case++ << ":" << endl;
int n, m;
cin >> n >> m;
build(1, 1, n);
while(m--) {
int l, r;
string s; cin >> s >> l >> r;
if(s == "wrap") {
int v; cin >> v;
modify(1, l, r, v);
}
else {
cout << query(1, l, r) << endl;
}
}
}
}
signed main() {
ios_base::sync_with_stdio(false);
##ifdef FZT_ACM_LOCAL
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
signed test_index_for_debug = 1;
char acm_local_for_debug = 0;
do {
if (acm_local_for_debug == '$') exit(0);
if (test_index_for_debug > 20)
throw runtime_error("Check the stdin!!!");
auto start_clock_for_debug = clock();
solve();
auto end_clock_for_debug = clock();
cout << "Test " << test_index_for_debug << " successful" << endl;
cerr << "Test " << test_index_for_debug++ << " Run Time: "
<< double(end_clock_for_debug - start_clock_for_debug) / CLOCKS_PER_SEC << "s" << endl;
cout << "--------------------------------------------------" << endl;
} while (cin >> acm_local_for_debug && cin.putback(acm_local_for_debug));
##else
solve();
##endif
return 0;
}
|