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delete pics to save space

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happyZYM
2023-08-03 09:22:52 +08:00
commit de60cd6ed4
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history_source/信息学奥赛一本通/1.5.1.6.cpp Normal file
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#include<cstdio>
using namespace std;
int main()
{
int l,m;
scanf("%d%d",&l,&m);
bool road[l+1];
for(int i=0;i<=l;i++) road[i]=1;
int a,b,ans=0;
for(int i=0;i<m;i++)
{
scanf("%d%d",&a,&b);
for(int j=a;j<=b;j++) road[j]=0;
}
for(int i=0;i<=l;i++) ans+=road[i];
printf("%d\n",ans);
return 0;
}