(模板)字符串哈希
#include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <queue> using namespace std; #define res register int /*#define getchar gc typedef long long LL; char buf[1<<23],*fc=buf,*tc=buf; inline char gc() { if(fc==tc) { tc=(fc=buf)+fread(buf,1,1<<23,stdin); if(fc==tc) return EOF; } return *fc++; }*/ inline int read() { int x=0,f=1;char ch; while(!isdigit(ch=getchar())) if(ch=='-') f=-1; while(isdigit(ch)) x=x*10+ch-'0',ch=getchar(); return f*x; } const int N=1000000+10; char s[N]; int len,q; unsigned long long f[N],p[N]; const unsigned long long P=131; inline unsigned long long calc(int l,int r) { return f[r]-f[l-1]*p[r-l+1]; } int main() { scanf("%s",s+1); len=strlen(s+1); scanf("%d",&q); p[0]=1; for(res i=1 ; i<=len ; ++i) { f[i]=f[i-1] * P + (s[i]-'a'+1);//hash of 1~i p[i]=p[i-1] * P;//P^i } for(res i=1 ; i<=q ; ++i) { int l1,r1,l2,r2; scanf("%d %d %d %d",&l1,&r1,&l2,&r2); if(calc(l1,r1)==calc(l2,r2)) puts("Yes"); else puts("No"); } return 0; }