Submission #68535033

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Source Code Expand

#include<bits/stdc++.h>
#define rg register int
#define fo(i,l,r) for(rg i=(l);i<=(r);i++)
#define dfo(i,r,l) for(rg i=(r);i>=(l);i--)
#define fe(i,x) for(rg i=hd[x];i;i=nex[i])
#define frein freopen("in.txt","r",stdin);
#define freout freopen("out.txt","w",stdout);
#define fre(p) freopen(#p".in","r",stdin),freopen(#p".out","w",stdout);
#define eb emplace_back
#define pii pair<int,int>
#define mkp make_pair
#define fir first
#define sec second
#define vi vector<int>
#define db double
#define ll long long
using namespace std;
bool deb=1;
void ck_(){cout<<"\n";}
template<typename T,typename ...R>
void ck_(T x,R... y){if(!deb)return;cout<<x<<" ";ck_(y...);}
void Bz_(){if(deb)cout<<"------------------------------\n";}
#define ck(x...) ck_(x)
#define Bz Bz_()
#define outa(l,r,a) {if(deb){fo(II,l,r)cout<<a[II]<<" ";cout<<"\n";}}
#define gettime (int)chrono::system_clock::now().time_since_epoch().count()
const int N=5e5+5;char a[N],b[N];bool c[N];
int n,m,x,y;
int main()
{
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	cin>>n>>m>>(a+1)>>(b+1);
	fo(i,1,m)
	{
		cin>>x>>y;
		c[x]^=1,c[y+1]^=1;
	}
	fo(i,1,n)c[i]^=c[i-1];
	fo(i,1,n)cout<<(c[i]?b[i]:a[i]);cout<<"\n";
	return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:33:12: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   33 |         fo(i,1,m)
      |            ^
Main.cpp:3:26: note: in definition of macro ‘fo’
    3 | #define fo(i,l,r) for(rg i=(l);i<=(r);i++)
      |                          ^
Main.cpp:38:12: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   38 |         fo(i,1,n)c[i]^=c[i-1];
      |            ^
Main.cpp:3:26: note: in definition of macro ‘fo’
    3 | #define fo(i,l,r) for(rg i=(l);i<=(r);i++)
      |                          ^
Main.cpp:39:12: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   39 |         fo(i,1,n)cout<<(c[i]?b[i]:a[i]);cout<<"\n";
      |            ^
Main.cpp:3:26: note: in definition of macro ‘fo’
    3 | #define fo(i,l,r) for(rg i=(l);i<=(r);i++)
      |                          ^
Main.cpp:3:19: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
    3 | #define fo(i,l,r) for(rg i=(l);i<=(r);i++)
      |                   ^~~
Main.cpp:39:9: note: in expansion of macro ‘fo’
   39 |         fo(i,1,n)cout<<(c[i]?b[i]:a[i]);cout<<"\n";
      |         ^~
Main.cpp:39:41: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   39 |         fo(i,1,n)cout<<(c[i]?b[i]:a[i]);cout<<"\n";
      |                                         ^~~~

Judge Result