Submission #53715167

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Source Code Expand

// LUOGU_RID: 159735622
#include<bits/stdc++.h>
#define Gc() getchar()
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
#define all(x) x.begin(),x.end()
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;
const int N=4e5+5,M=(1<<15)+5,K=1000+5,mod=1e9+7,Mod=mod-1;const db eps=1e-8;const int INF=1e9+7;mt19937 rnd(263082);
#define Tp template<typename T>
#define Ts template<typename T,typename... Ar>
namespace Debug{
	Tp void _debug(char* f,T t){cerr<<f<<'='<<t<<endl;}
	Ts void _debug(char* f,T x,Ar... y){while(*f!=',') cerr<<*f++;cerr<<'='<<x<<",";_debug(f+1,y...);}
	#ifdef LOCAL
	#define gdb(...) _debug((char*)#__VA_ARGS__,__VA_ARGS__)
	#else 
	#define gdb(...) void()
	#endif
}using namespace Debug;
int n,m,A[N],f[N],g[N],cnt;
void add(int x){
	f[x]++;
	if(x-f[x]+1>0){
		cnt-=!g[x-f[x]+1];
		g[x-f[x]+1]++;
	}
}
void del(int x){
	if(x-f[x]+1>0){
		g[x-f[x]+1]--;
		cnt+=!g[x-f[x]+1];
	}
	f[x]--;
}
void Solve(){
	int i,j;scanf("%d%d",&n,&m);
	for(i=1;i<=n;i++) scanf("%d",A+i);
	cnt=n;
	for(i=1;i<=n;i++) add(A[i]);
	while(m--){
		int x,y;scanf("%d%d",&x,&y);
		del(A[x]);
		A[x]=y;
		add(A[x]);
		gdb(g[1],g[2]);
		printf("%d\n",cnt);
	}
}
int main(){
	int t=1;
	// scanf("%d",&t);
	while(t--) Solve();
	cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}

Submission Info

Compile Error

Main.cpp: In function ‘void Solve()’:
Main.cpp:44:15: warning: unused variable ‘j’ [-Wunused-variable]
   44 |         int i,j;scanf("%d%d",&n,&m);
      |               ^
Main.cpp:44:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   44 |         int i,j;scanf("%d%d",&n,&m);
      |                 ~~~~~^~~~~~~~~~~~~~
Main.cpp:45:32: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   45 |         for(i=1;i<=n;i++) scanf("%d",A+i);
      |                           ~~~~~^~~~~~~~~~
Main.cpp:49:30: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   49 |                 int x,y;scanf("%d%d",&x,&y);
      |                         ~~~~~^~~~~~~~~~~~~~

Judge Result