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#include<stdio.h> int main(){ int i,j; char a[2][20]; for(i=0;i<2;i++){ scanf("%s",&a); } for(i=0;i<2;i++){ for(j=0;j<20;j++){ if('a'<=a[i][j]&&a[i][j]<='z') a[i][j]=a[i][j]-32; } } for(j=0;j<20;j++){ if(a[0][j]=a[1][j]) printf("%c",a[1][j]); } return 0; }
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