#include "bits/stdc++.h"
using namespace std;
int main( ) {
int nn;
cin >> nn;
while ( nn-- ) {
int n,m;
cin >> n >> m;
string com;
cin >> com;
int x = 0 , y = 0 ;
bool falg = 0 ;
rep( i, 0 , sz( com) ) {
if ( com[ i] == 'L' )
x-- ;
if ( com[ i] == 'R' )
x++ ;
if ( com[ i] == 'U' )
y++ ;
if ( com[ i] == 'D' )
y-- ;
if ( abs ( x) > m- 1 || abs ( y) > n- 1 ) {
cout << "unsafe" << endl;
falg = 1 ;
break ;
}
}
if ( ! falg)
cout << "safe" << endl;
}
return 0 ;
}
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
compilation info
prog.cpp: In function ‘int main()’:
prog.cpp:13:7: error: ‘i’ was not declared in this scope
rep(i, 0, sz(com)){
^
prog.cpp:13:19: error: ‘sz’ was not declared in this scope
rep(i, 0, sz(com)){
^
prog.cpp:13:20: error: ‘rep’ was not declared in this scope
rep(i, 0, sz(com)){
^
stdout