/*ID: qq104801LANG: C++TASK: preface*/#include <iostream>#include <fstream>#include <string>#include <vector>#include <cstdio>using namespace std;int n;char c[4][2]={‘I‘,‘V‘,‘X‘,‘L‘,‘C‘,‘D‘,‘M‘};int cc[4][2]={0};void calc(int n){    int w=0;    while(n!=0)    {        switch(n%10)        {            case 1:cc[w][0]++;break;            case 2:cc[w][0]+=2;break;            case 3:cc[w][0]+=3;break;            case 4:cc[w][0]++;cc[w][1]++;break;            case 5:cc[w][1]++;break;            case 6:cc[w][1]++;cc[w][0]++;break;            case 7:cc[w][1]++;cc[w][0]+=2;break;            case 8:cc[w][1]++;cc[w][0]+=3;break;            case 9:cc[w+1][0]++;cc[w][0]++;break;            //case 0:cc[w+1][0]++;break;        }        n/=10;        w++;    }}void test(){        freopen("preface.in","r",stdin);    freopen("preface.out","w",stdout);    cin>>n;    while(n)calc(n--);    int i,j;    for(i=0;i<4;i++)        for(j=0;j<2;j++)            if(cc[i][j])cout<<c[i][j]<<" "<<cc[i][j]<<endl; }int main () {            test();            return 0;}

/*ID: qq104801LANG: C++TASK: preface*/#include <iostream>#include <fstream>#include <string>#include <vector>#include <cstdio>using namespace std;int n;char c[4][2]={‘I‘,‘V‘,‘X‘,‘L‘,‘C‘,‘D‘,‘M‘};int cc[4][2]={0};void calc(int n){    int w=0;    while(n!=0)    {        switch(n%10)        {            case 1:cc[w][0]++;break;            case 2:cc[w][0]+=2;break;            case 3:cc[w][0]+=3;break;            case 4:cc[w][0]++;cc[w][1]++;break;            case 5:cc[w][1]++;break;            case 6:cc[w][1]++;cc[w][0]++;break;            case 7:cc[w][1]++;cc[w][0]+=2;break;            case 8:cc[w][1]++;cc[w][0]+=3;break;            case 9:cc[w+1][0]++;cc[w][0]++;break;            //case 0:cc[w+1][0]++;break;        }        n/=10;        w++;    }}void test(){        freopen("preface.in","r",stdin);    freopen("preface.out","w",stdout);    cin>>n;    while(n)calc(n--);    int i,j;    for(i=0;i<4;i++)        for(j=0;j<2;j++)            if(cc[i][j])cout<<c[i][j]<<" "<<cc[i][j]<<endl; }int main () {            test();            return 0;}

USER: cn tom [qq104801]TASK: prefaceLANG: C++Compiling...Compile: OKExecuting...   Test 1: TEST OK [0.005 secs, 3372 KB]   Test 2: TEST OK [0.003 secs, 3372 KB]   Test 3: TEST OK [0.003 secs, 3372 KB]   Test 4: TEST OK [0.003 secs, 3372 KB]   Test 5: TEST OK [0.003 secs, 3372 KB]   Test 6: TEST OK [0.003 secs, 3372 KB]   Test 7: TEST OK [0.005 secs, 3372 KB]   Test 8: TEST OK [0.003 secs, 3372 KB]All tests OK.Your program (‘preface‘) produced all correct answers! This is your submission #2 for this problem. Congratulations!Here are the test data inputs:------- test 1 ----1------- test 2 ----20------- test 3 ----100------- test 4 ----500------- test 5 ----1000------- test 6 ----2974------- test 7 ----3213------- test 8 ----3499Keep up the good work!Thanks for your submission!