./Main.c:1:1: warning: data definition has no type or storage class
o[1<<17];e[1<<17];i;f;s;g;t;main(a,b){for(;~scanf("%d",&a);)i++?i%2?b=++e[a],b>e[f]?s=f,f=a:b>e[s]&&f-a?s=a:0:(b=++o[a],b>o[g]?t=g,g=a:b>o[t]&&g-a?t=a:0):0;printf("%.f",i-1-(f-g?e[f]+o[g]:fmax(e[f]+o[t],e[s]+o[g])));}
^
./Main.c:1:1: warning: type defaults to ‘int’ in declaration of ‘o’ [-Wimplicit-int]
./Main.c:1:10: warning: data definition has no type or storage class
o[1<<17];e[1<<17];i;f;s;g;t;main(a,b){for(;~scanf("%d",&a);)i++?i%2?b=++e[a],b>e[f]?s=f,f=a:b>e[s]&&f-a?s=a:0:(b=++o[a],b>o[g]?t=g,g=a:b>o[t]&&g-a?t=a:0):0;printf("%.f",i-1-(f-g?e[f]+o[g]:fmax(e[f]+o[t],e[s]+o[g])));}
^
./Main.c:1:10: warning: type defaults to ‘int’ in declaration of ‘e’ [-Wimplicit-int]
./Main.c:1:19: warning: data definition has no type or storage class
o[1<<17];e[1<<17];i;f;s;g;t;main(a,b){for(;~scanf("%d",&a);)i++?i%2?b=++e[a],b>e[f]?s=f,f=a:b>e[s]&&f-a?s=a:0:(b=++o[a],b>o[g]?t=g,g=a:b>o[t]&&g-a?t=a:0):0;printf("%.f",i-1-(f-g?e[f]+o[g]:fmax(...