#include<bits/stdc++.h>
#define lf double
#define ll long long
#define ull unsigned ll
#define ii pair<int,int>
#define li pair<ll,int>
#define iii pair<int,ii>
#define iiii pair<ii,ii>
#define iiii2 pair<int,iii>
#define lii pair<ll,ii>
#define lolo pair<ll,ll>
#define heap priority_queue
#define mp make_pair
#define st first
#define nd second
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define all(x) x.begin(),x.end()
#define len(x) strlen(x)
#define sz(x) (int) x.size()
#define orta ((bas+son)/2)
#define min3(x,y,z) min(min(x,y),z)
#define max3(x,y,z) max(max(x,y),z)
#define umin(x,y) x=min(x,y)
#define umax(x,y) x=max(x,y)
#define dbgs(x) cerr<<(#x)<<" --> "<<(x)<<" "
#define dbg(x) cerr<<(#x)<<" --> "<<(x)<<endl;getchar()
#define MOD 1000000007
#define inf 1050000001
#define N 200005
#define LOG 19
#define magic 100
#define KOK 350
#define EPS 0.000000000001
#define pw(x) 1ll*((1ll)<<(x))
#define PI 3.1415926535
using namespace std;
int n,q,x,y,S[N*4];
int get(int node,int bas,int son,int x,int y,int val) {
if(bas>y || son<x) return inf;
if(bas>=x && son<=y) {
if(S[node]>val) return inf;
if(bas==son) return bas;
if(S[node*2]<=val) return get(node*2,bas,orta,x,y,val);
if(S[node*2+1]<=val) return get(node*2+1,orta+1,son,x,y,val);
}
int res=get(node*2,bas,orta,x,y,val);
if(res!=inf) return res;
return get(node*2+1,orta+1,son,x,y,val);
}
void up(int node,int bas,int son,int x,int val) {
if(bas>x || son<x) return ;
if(bas==x && son==x) {
S[node]=val;
return ;
}
up(node*2,bas,orta,x,val);
up(node*2+1,orta+1,son,x,val);
umin(S[node],min(S[node*2],S[node*2+1]));
}
void build(int node,int bas,int son) {
S[node]=inf;
if(bas==son) return ;
build(node*2,bas,orta);
build(node*2+1,orta+1,son);
}
int main() {
#if 0
freopen("input.txt","r",stdin);
#endif
scanf("%d %d",&n,&q);
build(1,1,n);
while(q--) {
char type;
scanf(" %c %d %d",&type,&x,&y);
if(type=='M') {
up(1,1,n,y,x);
}
else {
int res=get(1,1,n,y,n,x);
if(res==inf) res=-1;
printf("%d\n",res);
}
}
}
Compilation message
deda.cpp: In function 'int main()':
deda.cpp:103:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d",&n,&q);
~~~~~^~~~~~~~~~~~~~~
deda.cpp:111:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf(" %c %d %d",&type,&x,&y);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
248 KB |
Output is correct |
| 2 |
Correct |
2 ms |
484 KB |
Output is correct |
| 3 |
Correct |
5 ms |
516 KB |
Output is correct |
| 4 |
Correct |
194 ms |
3712 KB |
Output is correct |
| 5 |
Correct |
201 ms |
3712 KB |
Output is correct |
| 6 |
Correct |
171 ms |
3712 KB |
Output is correct |
| 7 |
Correct |
211 ms |
3712 KB |
Output is correct |
