Submission #1171579

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Source Code Expand

z[9999],a,b,c;f(x,y){fflush(!printf("? %d %d\n",x,y));scanf("%s",&b);b=b=='Y';}main(i){if(scanf("%d%d",&a,&b),a<=b){puts("Impossible");return 0;}for(i=a+=b;~--i;)!c||f(i,z[c-1])?(z[c++]=i):c--;for(c=*z,i=a;~--i;)z[i]=f(c,i);for(printf("! "),i=0;i<a;)printf("%d",z[i++]);puts("");}

Submission Info

Compile Error

./Main.c:1:1: warning: data definition has no type or storage class
 z[9999],a,b,c;f(x,y){fflush(!printf("? %d %d\n",x,y));scanf("%s",&b);b=b=='Y';}main(i){if(scanf("%d%d",&a,&b),a<=b){puts("Impossible");return 0;}for(i=a+=b;~--i;)!c||f(i,z[c-1])?(z[c++]=i):c--;for(c=*z,i=a;~--i;)z[i]=f(c,i);for(printf("! "),i=0;i<a;)printf("%d",z[i++]);puts("");}
 ^
./Main.c:1:1: warning: type defaults to ‘int’ in declaration of ‘z’ [-Wimplicit-int]
./Main.c:1:9: warning: type defaults to ‘int’ in declaration of ‘a’ [-Wimplicit-int]
 z[9999],a,b,c;f(x,y){fflush(!printf("? %d %d\n",x,y));scanf("%s",&b);b=b=='Y';}main(i){if(scanf("%d%d",&a,&b),a<=b){puts("Impossible");return 0;}for(i=a+=b;~--i;)!c||f(i,z[c-1])?(z[c++]=i):c--;for(c=*z,i=a;~--i;)z[i]=f(c,i);for(printf("! "),i=0;i<a;)printf("%d",z[i++]);puts("");}
         ^
./Main.c:1:11: warning: type defaults to ‘int’ in declaration of ‘b’ [-Wimplicit-int]
 z[9999],a,b,c;f(x,y){fflush(!printf("? %d %d\n",x,y));scanf("%s",&b);b=b=='Y';}main(i){if(scanf("%d%d",&a,&b),a<=b){puts(...

Judge Result