=DECHEX(SOMMEPROD((B4:AK4<>"")*TRANSPOSE(2^(36-LIGNE($1:$36))));9)&DECHEX(SOMMEPROD((AL4:BU4<>"")*TRANSPOSE(2^(36-LIGNE($1:$36))));9)&DECHEX(SOMMEPROD((BV4:DE4<>"")*TRANSPOSE(2^(36-LIGNE($1:$36))));9)&DECHEX(SOMMEPROD((DF4:EO4<>"")*TRANSPOSE(2^(36-LIGNE($1:$36))));9)&DECHEX(SOMMEPROD((EP4:FY4<>"")*TRANSPOSE(2^(36-LIGNE($1:$36))));9)&DECHEX(SOMMEPROD((FZ4:GS4<>"")*TRANSPOSE(2^(20-LIGNE($1:$20))));5)