非常奇妙

这个样例不过零分

#include <cstdio>
using namespace std;
int n,m;
char c;
int a[1000001];
void opt1(){
    int x,y,maxn=-1;
    scanf("%d%d",&x,&y);
    for(int i=x;i<=y;++i){
        if(a[i]>=maxn)
            maxn=a[i];
    }
    printf("%d\n",maxn);
}
void opt2(){
    int x,y;
    scanf("%d%d",&x,&y);
    if(a[x]<y)a[x]=y;
}
int main() {
    scanf("%d%d",&n,&m);
    
    for(int i=1;i<=n;++i)
        scanf("%d",&a[i]);
   
    while(m--){
        scanf("%c",&c);
        if(c=='Q')opt1();
        if(c=='U')opt2();
    }
    return 0;
}

加上 $m$ 乘三就 ac？为啥？```cpp #include using namespace std; int n,m; char c; int a[1000001]; void opt1(){ int x,y,maxn=-1; scanf("%d%d",&x,&y); for(int i=x;i<=y;++i){ if(a[i]>=maxn) maxn=a[i]; } printf("%d\n",maxn); } void opt2(){ int x,y; scanf("%d%d",&x,&y); if(a[x]<y)a[x]=y; } int main() { scanf("%d%d",&n,&m);

for(int i=1;i<=n;++i)
    scanf("%d",&a[i]);
m*=3;
while(m--){
    scanf("%c",&c);
    if(c=='Q')opt1();
    if(c=='U')opt2();
}
return 0;

}