要不是神犇们说了题目大意我才懒得做，语言障碍QAQ
区间取模，调得有点久，线段树还得多练练。。。
1 #include<bits/stdc++.h> 2 #define inc(i,l,r) for(i=l;i<=r;i++) 3 #define dec(i,l,r) for(i=l;i>=r;i--) 4 #define inf 1e9 5 #define NM 100000+5 6 #define mem(a) memset(a,0,sizeof(a)) 7 using namespace std; 8 struct info{ 9 long long s,m; 10 info(int x=0):s(x),m(x){ 11 } 12 }T[3*NM]; 13 info operator+(const info&x,const info&y){ 14 info f; 15 f.s=x.s+y.s; 16 f.m=max(x.m,y.m); 17 return f; 18 } 19 int n,m,i,x,y,t; 20 void build(int i,int x,int y){ 21 int t=(x+y)/2; 22 if(x==y){ 23 scanf("%d",&x); 24 T[i]=info(x); 25 return; 26 } 27 build(i*2,x,t);build(i*2+1,t+1,y); 28 T[i]=T[i*2]+T[i*2+1]; 29 } 30 long long sum(int i,int x,int y,int a,int b){ 31 int t=(x+y)/2; 32 if(b<x||y<a)return 0; 33 if(x>=a&&b>=y)return T[i].s; 34 return sum(i*2,x,t,a,b)+sum(i*2+1,t+1,y,a,b); 35 } 36 void ch(int i,int x,int y,int a,int b){ 37 int t=(x+y)/2; 38 if(x==y){ 39 T[i]=info(b); 40 return; 41 } 42 if(a<=t)ch(i*2,x,t,a,b); 43 else ch(i*2+1,t+1,y,a,b); 44 T[i]=T[i*2]+T[i*2+1]; 45 } 46 void mod(int i,int x,int y,int a,int b,int k){ 47 int t=(x+y)/2; 48 if(T[i].m<k)return; 49 if(b<x||a>y)return; 50 if(x==y){ 51 T[i].m=T[i].s=T[i].s%k; 52 return; 53 } 54 mod(i*2,x,t,a,b,k);mod(i*2+1,t+1,y,a,b,k); 55 T[i]=T[i*2]+T[i*2+1]; 56 } 57 int main(){ 58 scanf("%d%d",&n,&m); 59 build(1,1,n); 60 inc(i,1,m){ 61 scanf("%d",&x); 62 if(x==1){ 63 scanf("%d%d",&x,&y); 64 printf("%I64d ",sum(1,1,n,x,y)); 65 }else if(x==2){ 66 scanf("%d%d%d",&x,&y,&t); 67 mod(1,1,n,x,y,t); 68 }else{ 69 scanf("%d%d",&x,&y); 70 ch(1,1,n,x,y); 71 } 72 } 73 return 0; 74 }