Files
OI-source/history_source/ccf 入门篇/U4/4.5.4.cpp
2023-08-03 09:22:52 +08:00

16 lines
227 B
C++

#include<iostream>
using namespace std;
int main()
{
int j[13],a;
while(true)
{
for(int i=0;i<13;i++) j[i]=0;
for(int i=0;i<25;i++){
cin>>a;
j[a-1]=j[a-1]+1;
}
for(int i=0;i<13;i++) if(j[i]<2) cout<<i+1;
}
}