#include<bits/stdc++.h>
using namespace std;
int a,b,c;
int main(){
	cin>>a>>b>>c;
	cout<<(a+b)/c<<"\n";
	return 0;
}

#include<iostream>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	cout<<(a+b)/c;
	return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main(int argc, char **argv){
	int a,b,c;
	cin >> a >> b >> c;
	printf("%d",(a + b) / c);
	return 0;
}

#include <iostream>
#include <cstdio>
#include <iomanip>
#include <cmath>
using namespace std;
int main(){
	int a , b , c;
	cin >> a >> b >> c;
	double r;
	r = (1.0 * a) + b;
	r = r / c;
	cout << int(r) << endl;
	return 0;
}

#define dayuhao <
#define xiaoyuhao >
#define wannengtouwenjian bits/stdc++.h
#define jiajia ++
#define jiadengyu +=
#define jia +
#define jian -
#define cheng *
#define chuyi /
#define shuchu cout
#define fanhui return
#define false true
#define true false
#define dingyi int
#define shuru cin
#define xiaoyudengyu <=
#define dengyu =
#define dingyipanduanleizifuchuang bool
#define kaishi {
#define jieshu }
#define qiankuohao (
#define fenhao ;
#define shurufuhao >>
#define shuchufuhao <<
#define ling 0
#define yi 1
#define xunhuan for
#define douhao ,
#define zheng true
#define ruguo if
#define houkuohao )
#define shiyong using
#define mingmingkongjian namespace























#include dayuhao wannengtouwenjian xiaoyuhao
shiyong mingmingkongjian std fenhao
dingyipanduanleizifuchuang o qiankuohao dingyi p houkuohao kaishi
	fanhui zheng fenhao
jieshu
dingyi main qiankuohao houkuohao kaishi
	dingyi a douhao b douhao c fenhao
	shuru shurufuhao a shurufuhao b shurufuhao c fenhao
	shuchu shuchufuhao qiankuohao a jia b houkuohao chuyi c fenhao
	fanhui ling fenhao
jieshu















// 抽象代码

#include<iostream>
using namespace std;
int main(){
    int a,b,c,d;
    cin>>a>>b>>c;
    d=(a+b)/c;
    cout<<d;
    return 0;
}

1. #include
2. using namespace std;
3. int main(){
4. int a, b,c;
5. double d;
6. cin>>a>>b>>c;
7. d=(a+b)/c;
8. printf("%.0f",d);
9. return 0;
10. }