#include <bits/stdc++.h>
using namespace std;
const int mxn = 2e5 + 10;
int n, m, q, a[mxn], st[mxn * 4];
void build(int id, int tl, int tr) {
if(tl == tr) {
st[id] = a[tl];
return;
}
int tm = (tl + tr) / 2;
build(id * 2 + 1, tl, tm);
build(id * 2 + 2, tm + 1, tr);
st[id] = min(st[id * 2 + 1], st[id * 2 + 2]);
}
int query(int id, int tl, int tr, int i, int low) {
if(st[id] > low) return tr - tl + 1;
if(tl == tr) return 0;
int tm = (tl + tr) / 2;
if(i <= tm) {
int LQ = query(id * 2 + 1, tl, tm, i, low);
int RQ = 0;
if(LQ == tm - tl + 1)
RQ = query(id * 2 + 2, tm + 1, tr, tm + 1, low);
return LQ + RQ;
}
int LQ = 0;
int RQ = query(id * 2 + 2, tm + 1, tr, i, low);
if(RQ == tr - tm)
LQ = query(id * 2 + 1, tl, tm, tm, low);
return LQ + RQ;
}
int main() {
cin >> n >> m;
for(int i = 0; i < m; i++) {
int u, v, w;
cin >> u >> v >> w;
a[i] = w;
}
build(0, 0, m - 1);
cin >> q;
for(int i = 0; i < q; i++) {
int t, s, w;
cin >> t >> s >> w;
if(t == 1) upt(0, 0, m - 1, s - 1, w);
else {
pii L = s < 2 ? (-1, -1) : (s - 2, a[s - 2]);
pii R = s < n ? (s - 1, a[s - 1]) : (-1, -1);
pii P = max(L, R);
cout << query(0, 0, m - 1, P.ss, w);
}
}
return 0;
}
Compilation message
bridges.cpp: In function 'int main()':
bridges.cpp:53:14: error: 'upt' was not declared in this scope
53 | if(t == 1) upt(0, 0, m - 1, s - 1, w);
| ^~~
bridges.cpp:55:4: error: 'pii' was not declared in this scope
55 | pii L = s < 2 ? (-1, -1) : (s - 2, a[s - 2]);
| ^~~
bridges.cpp:56:7: error: expected ';' before 'R'
56 | pii R = s < n ? (s - 1, a[s - 1]) : (-1, -1);
| ^~
| ;
bridges.cpp:57:7: error: expected ';' before 'P'
57 | pii P = max(L, R);
| ^~
| ;
bridges.cpp:59:31: error: 'P' was not declared in this scope
59 | cout << query(0, 0, m - 1, P.ss, w);
| ^
