for (a=1,b=1;a=20) break;if(b%3==1){b+=3; continue;}b-=5;

for (a=1,b=1;a=20) break; if(b%3==1) {b+=3; continue;} b-=5; for (a=1,b=1;a=20) break;if(b%3==1){b+=3; continue;}b-=5; int a,b; for(a=1,b=1;a=10) break; if(b%3==1) {b+=3;continue; ：for(a=1,b=1;a=20) break; if(b%3==1) {b+=3; continue; {int a,b; for(a=1,b=1;a=20) break; if(b%3==1) {b+=3; continu main( ){int a,b;for(a=1,b=1;a=20)break;if(b%3==1){b+=3;conti switch(a*a+b*b); { case 3 :case 1 :y=a+b; break; case 0 :y=b A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+B A-B×3=C C+2×7+2=1 4、for (a=1,b=1;a=20) break; int a =1,b=0; if(--a) b++; else if (a=0)b+=2; else b+=3; b等于 a-b\a+b=1\2时,求代数式a+b\3(a-b) - a-b\2(a+b) a=1;b=0; if((a++>++b)?a++:b--) a+=b; a值为