Use_Imagination @ 2023-02-11 11:26:53
#include<bits/stdc++.h>
using namespace std;
int main(){
int n,m;
cin>>n>>m;
bool a[n+1];
memset(a,true,sizeof(a));
for(int i=1;i<=m;i++){
int x,y;
cin>>x>>y;
for(int j=x;j<=y;j++)
a[j]=false;
}
int sum=1;
for(int i=1;i<=n;i++){
if(a[i])
sum++;
}
cout<<sum;
return 0;
}by Loser_Syx @ 2023-02-11 11:29:34
@luogu_wzh 统计sum的时候i=0
by Use_Imagination @ 2023-02-11 11:32:56
@Saint_ying_xtf 不行，0分
by guozhe6241 @ 2023-02-11 11:34:34
最后循环i=0看看行不行@luogu_wzh
by Use_Imagination @ 2023-02-11 11:35:34
不行，成0分
by Loser_Syx @ 2023-02-11 11:36:20
@luogu_wzh sum初始零
by Loser_Syx @ 2023-02-11 11:36:52
然后i从零开始
by guozhe6241 @ 2023-02-11 11:37:40
#include<bits/stdc++.h>
using namespace std;
int main(){
int n,m;
cin>>n>>m;
bool a[n+1];
memset(a,true,sizeof(a));
for(int i=1;i<=m;i++){
int x,y;
cin>>x>>y;
for(int j=x;j<=y;j++)
a[j]=false;
}
int sum=0;
for(int i=0;i<=n;i++){
if(a[i])
sum++;
}
cout<<sum;
return 0;
}这个代码我能A@luogu_wzh
by Use_Imagination @ 2023-02-11 11:37:47
oh,感谢，AC了！