#include<cstdio>#include<iostream>#include<algorithm>
using namespace std;//判断质数
bool isPrime(int x){
if(x <2)return false;for(int i =2; i <= x/i; i ++){
if(x % i ==0)return false;}return true;}//求最大公约数 intgcd(int x,int y){
if(y ==0)return x;returngcd(y, x % y);}intmain(){
int m, n, t;
cin >> m >> n;if(gcd(m,n)==1){
t = m + n;
cout << t << endl;if(isPrime(t)) cout <<"YES";else cout <<"NO";}else{
//长整形转换
cout <<(longlong) m * n << endl;
cout <<"NO";}return0;}
卓球
#include<cstdio>#include<iostream>
using namespace std;intmain(){
char ch;int a =0, b =0;//连续输入字符的方法 while(cin >> ch){
//比赛结束 if(ch =='E')break;//樊振东得分 if(ch =='F'){
a ++;if(a ==11&& b <10|| a >11&& a - b ==2){
printf("%d:%d\n", a, b);
a =0;
b =0;}}//对手得分 elseif(ch =='A'){
b ++;if(b ==11&& a <10|| b >11&& b - a ==2){
printf("%d:%d\n", a, b);
a =0;
b =0;}}}//最后一局虽然没比完,也要输出得分 if(a !=0|| b !=0){
printf("%d:%d\n", a, b);}return0;}
乗算
#include<cstdio>#include<iostream>#include<algorithm>
using namespace std;constint MOD =10007;int a[105], pos;voidadd(){
//t表示进位 int t =1;//最高位上有可能进位,所以往前扩展一位 for(int i = pos; i >=0; i --){
t += a[i];
a[i]= t %10;
t /=10;}}intmain(){
char ch;while(cin >> ch){
//将数字存入数组 if(ch !='.'){
a[++pos]= ch -'0';}//如果是小数点,则读入下一个数字,并四舍五入;停止输入 else{
cin >> ch;if(ch >'4'){
add();}break;}}//计算取整后每位数字的乘积,并取模 int ans =1;for(int i =1; i <= pos; i ++){
ans =(ans * a[i])% MOD;}
cout << ans;return0;}
いいね
#include<iostream>#include<cstdio>
using namespace std;intmain(){
int m, n, cnt =0;
cin >> m >> n;int x;for(int i =1; i <= n; i ++){
cin >> x;if(x < m) cnt ++;}
cout << cnt;return0;}