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template | |
<class T> | |
struct | |
RMQ{ | |
typedef | |
vector< | |
T>V; | |
typedef | |
size_t | |
H;vector | |
<V >D;vector <H | |
>G;RMQ(V I){H n=I.size();D.resize | |
(n); D[0]=I;for (H i | |
=0;i< n -1 ; i++){for(H j | |
=0 ;j <n | |
;j ++)if | |
(D[i].size | |
() -j >1 | |
<< i) {D | |
[i +1 ]. | |
push_back | |
(min(D[i | |
][j],D[i | |
][ j+ (1 | |
<< i) ]) | |
); }} G. | |
resize(n | |
+1);for( | |
H i=0;i< | |
n;)G[++i | |
]=O(i);} | |
H O(H n) | |
{H P=0; | |
while(n | |
/=2)P++; | |
return P | |
;}T get(H | |
l,H r){H | |
a=G[r-l]; | |
return | |
min(D[a] | |
[l],D[a] | |
[r-(1<<a | |
)]); | |
}}; | |
main(){vector<int>v;for(int i=1;i< | |
30;i++)v.push_back(i);RMQ<int>st(v);for( | |
int l=0;l<v.size();l++)for(int r=l+1;r<v | |
.size();r++){int correct=v[l];for(size_t i | |
=l+1;i<r;i++)correct=min(correct,v[i]);if( | |
correct!=st(l, r))return 1;}return 0;} |
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