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UVALive4886.cpp
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UVALive4886.cpp
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#include<bits/stdc++.h>
using namespace std;
const int MAX = 1e3 + 5;
char str[MAX];
int v[MAX];
int main() {
int n;
while (~scanf("%d",&n),n) {
memset(v,0,sizeof v);
scanf("%s",str);
int l = strlen(str),num1 = 0,num2 = 0,f = 1;
str[l++] = ',';
for (int i = 0; i < l; ++i) {
if (str[i] >= '0' && str[i] <= '9') {
if (f == 1) {
num1 = num1 * 10 + str[i] - '0';
}
if (f == 2) {
num2 = num2 * 10 + str[i] - '0';
}
}
else if (str[i] == '-') {
if (num1) f = 2;
}
else {
if(num1 >= 1000)num1 = 1000;
if(num2 >= 1000)num2 = 1000;
if (f == 1 || num2 == 0) v[num1] = 1;
else {
for (int i = num1; i <= num2; ++i) {
v[i] = 1;
}
}
num1 = num2 = 0;
f = 1;
}
}
int ans = 0;
for (int i = 1; i <= n && i <= 1000; ++i) {
if(v[i]) ans++;
}
printf("%d\n",ans);
}
}